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fanqinying d2f00b744a VPC UMN 20241224 version 
Reviewed-by: Szirovicza Gergő <a94652429@noreply.gitea.eco.tsi-dev.otc-service.com>
Reviewed-by: Sarda, Priya <prsarda@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-authored-by: fanqinying <fanqinying@huawei.com>
Co-committed-by: fanqinying <fanqinying@huawei.com>
2025-09-11 07:29:55 +00:00

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<a name="en-us_topic_0046809840"></a><a name="en-us_topic_0046809840"></a>
<h1 class="topictitle1">VPC Peering Connection Usage Examples</h1>
<div id="body1484535455797"><p id="en-us_topic_0046809840__p1271255813710">A VPC peering connection is a networking connection between two VPCs in the same region and enables them to communicate. <a href="#en-us_topic_0046809840__table18339193642913">Table 1</a> lists different scenarios of using VPC peering connections.</p>
<div class="tablenoborder"><a name="en-us_topic_0046809840__table18339193642913"></a><a name="table18339193642913"></a><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table18339193642913" frame="border" border="1" rules="all"><caption><b>Table 1 </b>VPC peering connection usage examples</caption><thead align="left"><tr id="en-us_topic_0046809840__row15340936142912"><th align="left" class="cellrowborder" valign="top" width="10.69%" id="mcps1.3.2.2.5.1.1"><p id="en-us_topic_0046809840__p1545916361016">Location</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="19.82%" id="mcps1.3.2.2.5.1.2"><p id="en-us_topic_0046809840__p579175112474">CIDR Block</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="28.360000000000003%" id="mcps1.3.2.2.5.1.3"><p id="en-us_topic_0046809840__p1370510217197">Description</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="41.13%" id="mcps1.3.2.2.5.1.4"><p id="en-us_topic_0046809840__p1234083612915">Usage Example</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row1340193610294"><td class="cellrowborder" valign="top" width="10.69%" headers="mcps1.3.2.2.5.1.1 "><p id="en-us_topic_0046809840__p34597361617">VPCs in the same region</p>
</td>
<td class="cellrowborder" valign="top" width="19.82%" headers="mcps1.3.2.2.5.1.2 "><ul id="en-us_topic_0046809840__ul36531058181712"><li id="en-us_topic_0046809840__li146531058151718">VPC CIDR blocks do not overlap.</li><li id="en-us_topic_0046809840__li1165335815174">Subnet CIDR blocks of VPCs do not overlap.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="28.360000000000003%" headers="mcps1.3.2.2.5.1.3 "><p id="en-us_topic_0046809840__p177052218191">You can create VPC peering connections to connect entire CIDR blocks of VPCs. Then, all resources in the VPCs can communicate with each other.</p>
</td>
<td class="cellrowborder" valign="top" width="41.13%" headers="mcps1.3.2.2.5.1.4 "><ul id="en-us_topic_0046809840__ul97021025142019"><li id="en-us_topic_0046809840__li670242592016"><a href="#en-us_topic_0046809840__section1450741418179">Peering Two or More VPCs</a></li><li id="en-us_topic_0046809840__li106014271208"><a href="#en-us_topic_0046809840__section51284316142">Peering One Central VPC with Multiple VPCs</a></li></ul>
</td>
</tr>
<tr id="en-us_topic_0046809840__row4340193617295"><td class="cellrowborder" valign="top" width="10.69%" headers="mcps1.3.2.2.5.1.1 "><p id="en-us_topic_0046809840__p749725148">VPCs in the same region</p>
</td>
<td class="cellrowborder" valign="top" width="19.82%" headers="mcps1.3.2.2.5.1.2 "><ul id="en-us_topic_0046809840__ul19800954125310"><li id="en-us_topic_0046809840__li1080015548534">VPC CIDR blocks overlap.</li><li id="en-us_topic_0046809840__li78007541536">Some subnet CIDR blocks overlap.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="28.360000000000003%" headers="mcps1.3.2.2.5.1.3 "><p id="en-us_topic_0046809840__p1664426195520">You can create VPC peering connections to connect specific subnets or ECSs from different VPCs.</p>
<ul id="en-us_topic_0046809840__ul1342192719551"><li id="en-us_topic_0046809840__li428415985515">To connect specific subnets from two VPCs, the subnet CIDR blocks cannot overlap.</li><li id="en-us_topic_0046809840__li14216276557">To connect specific ECSs from two VPCs, each ECS must have a unique private IP address.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="41.13%" headers="mcps1.3.2.2.5.1.4 "><ul id="en-us_topic_0046809840__ul139717301622"><li id="en-us_topic_0046809840__li139763015212"><a href="#en-us_topic_0046809840__section6703221192012">Peering Two VPCs with Overlapping CIDR Blocks</a></li><li id="en-us_topic_0046809840__li1977434913328"><a href="#en-us_topic_0046809840__section654114220445">Peering ECSs in a Central VPC with ECSs in Two Other VPCs</a></li></ul>
</td>
</tr>
<tr id="en-us_topic_0046809840__row63773918512"><td class="cellrowborder" valign="top" width="10.69%" headers="mcps1.3.2.2.5.1.1 "><p id="en-us_topic_0046809840__p549717514412">VPCs in the same region</p>
</td>
<td class="cellrowborder" valign="top" width="19.82%" headers="mcps1.3.2.2.5.1.2 "><ul id="en-us_topic_0046809840__ul1068014185381"><li id="en-us_topic_0046809840__li1558414716523">VPC CIDR blocks overlap.</li><li id="en-us_topic_0046809840__li1680101815389">All subnet CIDR blocks overlap.</li></ul>
</td>
<td class="cellrowborder" valign="top" width="28.360000000000003%" headers="mcps1.3.2.2.5.1.3 "><p id="en-us_topic_0046809840__p153358619538">VPC peering connections are not usable.</p>
</td>
<td class="cellrowborder" valign="top" width="41.13%" headers="mcps1.3.2.2.5.1.4 "><ul id="en-us_topic_0046809840__ul1898723860"><li id="en-us_topic_0046809840__li0987103662"><a href="#en-us_topic_0046809840__section0306616175518">Invalid VPC Peering Connections</a></li></ul>
</td>
</tr>
</tbody>
</table>
</div>
<p id="en-us_topic_0046809840__p131441322143217"></p>
<div class="section" id="en-us_topic_0046809840__section1450741418179"><a name="en-us_topic_0046809840__section1450741418179"></a><a name="section1450741418179"></a><h4 class="sectiontitle">Peering Two or More VPCs</h4><ul id="en-us_topic_0046809840__ul1698301181816"><li id="en-us_topic_0046809840__li159838119188">Two VPCs peered together: <a href="#en-us_topic_0046809840__fig465519155457">Figure 1</a> shows the networking diagram of a VPC peering connection that connects VPC-A and VPC-B.<div class="fignone" id="en-us_topic_0046809840__fig465519155457"><a name="en-us_topic_0046809840__fig465519155457"></a><a name="fig465519155457"></a><span class="figcap"><b>Figure 1 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__en-us_topic_0000001207340272_image42928328228" src="en-us_image_0000001865662841.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table143498013410" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Peering relationships (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row3349180347"><th align="left" class="cellrowborder" valign="top" width="22%" id="mcps1.3.4.2.1.3.2.5.1.1"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p12349904414">Peering Relationship</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.85%" id="mcps1.3.4.2.1.3.2.5.1.2"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p8349401843">Peering Connection Name</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.85%" id="mcps1.3.4.2.1.3.2.5.1.3"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p18349180148">Local VPC</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.3%" id="mcps1.3.4.2.1.3.2.5.1.4"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p834910441">Peer VPC</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row3349801841"><td class="cellrowborder" valign="top" width="22%" headers="mcps1.3.4.2.1.3.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p73491600412">VPC-A is peered with VPC-B.</p>
</td>
<td class="cellrowborder" valign="top" width="24.85%" headers="mcps1.3.4.2.1.3.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1434950741">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="26.85%" headers="mcps1.3.4.2.1.3.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p193491301641">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.3%" headers="mcps1.3.4.2.1.3.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p6349200446">VPC-B</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table1612613219407" frame="border" border="1" rules="all"><caption><b>Table 3 </b>VPC route tables (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row430343919239"><th align="left" class="cellrowborder" valign="top" width="9.69%" id="mcps1.3.4.2.1.4.2.6.1.1"><p id="en-us_topic_0046809840__p14493943162320">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.11%" id="mcps1.3.4.2.1.4.2.6.1.2"><p id="en-us_topic_0046809840__p13493843192317">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.950000000000001%" id="mcps1.3.4.2.1.4.2.6.1.3"><p id="en-us_topic_0046809840__p2049310436232">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="10.15%" id="mcps1.3.4.2.1.4.2.6.1.4"><p id="en-us_topic_0046809840__p53031639182311">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.1%" id="mcps1.3.4.2.1.4.2.6.1.5"><p id="en-us_topic_0046809840__p1038353716568">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row109751734165715"><td class="cellrowborder" valign="top" width="9.69%" headers="mcps1.3.4.2.1.4.2.6.1.1 "><p id="en-us_topic_0046809840__p15303123922315">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="14.11%" headers="mcps1.3.4.2.1.4.2.6.1.2 "><p id="en-us_topic_0046809840__p18976534135719">10.0.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.950000000000001%" headers="mcps1.3.4.2.1.4.2.6.1.3 "><p id="en-us_topic_0046809840__p1097611342575">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.15%" headers="mcps1.3.4.2.1.4.2.6.1.4 "><p id="en-us_topic_0046809840__p17976534125713">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="53.1%" headers="mcps1.3.4.2.1.4.2.6.1.5 "><p id="en-us_topic_0046809840__p11384143711560">Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row138494723119"><td class="cellrowborder" valign="top" width="9.69%" headers="mcps1.3.4.2.1.4.2.6.1.1 "><p id="en-us_topic_0046809840__p10651440163113">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="14.11%" headers="mcps1.3.4.2.1.4.2.6.1.2 "><p id="en-us_topic_0046809840__p7384164733117">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.950000000000001%" headers="mcps1.3.4.2.1.4.2.6.1.3 "><p id="en-us_topic_0046809840__p8947957105712">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.15%" headers="mcps1.3.4.2.1.4.2.6.1.4 "><p id="en-us_topic_0046809840__p179471657175710">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="53.1%" headers="mcps1.3.4.2.1.4.2.6.1.5 "><p id="en-us_topic_0046809840__p738463735619">Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</li><li id="en-us_topic_0046809840__li985112174318">Multiple VPCs peered together: <a href="#en-us_topic_0046809840__fig2032313286441">Figure 2</a> shows the networking diagram of VPC peering connections that connect VPC-A, VPC-B, and VPC-C.<div class="fignone" id="en-us_topic_0046809840__fig2032313286441"><a name="en-us_topic_0046809840__fig2032313286441"></a><a name="fig2032313286441"></a><span class="figcap"><b>Figure 2 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__en-us_topic_0000001207340272_image207692572468" src="en-us_image_0000001818982906.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table656214284514" frame="border" border="1" rules="all"><caption><b>Table 4 </b>Peering relationships (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row9769165754613"><th align="left" class="cellrowborder" valign="top" width="21.98%" id="mcps1.3.4.2.2.3.2.5.1.1"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p6769145716461">Peering Relationship</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.97%" id="mcps1.3.4.2.2.3.2.5.1.2"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1976945754613">Peering Connection Name</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.86%" id="mcps1.3.4.2.2.3.2.5.1.3"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p711716153266">Local VPC</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.19%" id="mcps1.3.4.2.2.3.2.5.1.4"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p2119827122618">Peer VPC</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row27693571467"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.4.2.2.3.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p776935713465">VPC-A is peered with VPC-B.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.4.2.2.3.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1277075724618">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.4.2.2.3.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1311791552617">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.4.2.2.3.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p4119327132611">VPC-B</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row14465144610498"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.4.2.2.3.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p7465194654918">VPC-A is peered with VPC-C.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.4.2.2.3.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p2465846104918">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.4.2.2.3.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p211711532616">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.4.2.2.3.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p12119727122613">VPC-C</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row1082518574517"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.4.2.2.3.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p14825135711510">VPC-B is peered with VPC-C.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.4.2.2.3.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p9825185716510">Peering-BC</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.4.2.2.3.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p191171115202615">VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.4.2.2.3.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1811952732618">VPC-C</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table1577011575461" frame="border" border="1" rules="all"><caption><b>Table 5 </b>VPC route tables (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row477075719461"><th align="left" class="cellrowborder" valign="top" width="9.700000000000001%" id="mcps1.3.4.2.2.4.2.6.1.1"><p id="en-us_topic_0046809840__p8770757114617">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.59%" id="mcps1.3.4.2.2.4.2.6.1.2"><p id="en-us_topic_0046809840__p7770557194611">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.49%" id="mcps1.3.4.2.2.4.2.6.1.3"><p id="en-us_topic_0046809840__p14770125764619">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="10.34%" id="mcps1.3.4.2.2.4.2.6.1.4"><p id="en-us_topic_0046809840__p13770125744616">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="52.88%" id="mcps1.3.4.2.2.4.2.6.1.5"><p id="en-us_topic_0046809840__p12083714312">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row17770105717465"><td class="cellrowborder" rowspan="2" valign="top" width="9.700000000000001%" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p8770155764610">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="14.59%" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p4770165710464">10.0.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.49%" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p777013571465">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.34%" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p9770057104612">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.88%" headers="mcps1.3.4.2.2.4.2.6.1.5 "><p id="en-us_topic_0046809840__p11209376317">Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row8665173112527"><td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p1166614316528">192.168.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p36661831125216">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p766643175217">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p920183714311">Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row18770357134617"><td class="cellrowborder" rowspan="2" valign="top" width="9.700000000000001%" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p1277065712468">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="14.59%" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p4770145724613">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.49%" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p6770155794612">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.34%" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p1277010576462">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.88%" headers="mcps1.3.4.2.2.4.2.6.1.5 "><p id="en-us_topic_0046809840__p5206371139">Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row312713613535"><td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p12587121395314">192.168.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p1758741318536">Peering-BC</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p558716136539">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p22017378318">Add a route with the CIDR block of VPC-C as the destination and Peering-BC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row115463010536"><td class="cellrowborder" rowspan="2" valign="top" width="9.700000000000001%" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p18154730195312">rtb-VPC-C</p>
</td>
<td class="cellrowborder" valign="top" width="14.59%" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p1415503020533">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.49%" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p9155103017534">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="10.34%" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p11939144719541">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.88%" headers="mcps1.3.4.2.2.4.2.6.1.5 "><p id="en-us_topic_0046809840__p12200372032">Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row415518302532"><td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p18155123019535">10.0.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p101554309538">Peering-BC</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p15939164705412">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.4.2.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p12206375318">Add a route with the CIDR block of VPC-B as the destination and Peering-BC as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</li></ul>
</div>
<div class="section" id="en-us_topic_0046809840__section51284316142"><a name="en-us_topic_0046809840__section51284316142"></a><a name="section51284316142"></a><h4 class="sectiontitle">Peering One Central VPC with Multiple VPCs</h4><p id="en-us_topic_0046809840__p52212494149"><a href="#en-us_topic_0046809840__fig724664185">Figure 3</a> shows the networking diagram of VPC peering connections that connect VPC-B, VPC-C, VPC-D, VPC-E, VPC-F, VPC-G, and central VPC-A.</p>
<div class="fignone" id="en-us_topic_0046809840__fig724664185"><a name="en-us_topic_0046809840__fig724664185"></a><a name="fig724664185"></a><span class="figcap"><b>Figure 3 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__en-us_topic_0000001207340272_image7601035125216" src="en-us_image_0000001818823110.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table1833282913206" frame="border" border="1" rules="all"><caption><b>Table 6 </b>Peering relationships (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row9902749191711"><th align="left" class="cellrowborder" valign="top" width="21.98%" id="mcps1.3.5.4.2.5.1.1"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p690324981710">Peering Relationship</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.97%" id="mcps1.3.5.4.2.5.1.2"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1390314910170">Peering Connection Name</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.86%" id="mcps1.3.5.4.2.5.1.3"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p99038495174">Local VPC</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.19%" id="mcps1.3.5.4.2.5.1.4"><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p139036496179">Peer VPC</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row2903154951713"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p139031349151715">VPC-A is peered with VPC-B.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p15903174910172">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p390313495171">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p12903144912174">VPC-B</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row1590354981719"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p7903134916171">VPC-A is peered with VPC-C.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p6903154917173">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p690314913172">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1290317492177">VPC-C</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row9250175419295"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p26716510307">VPC-A is peered with VPC-D.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p0671556301">Peering-AD</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p14671185183012">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p66711953302">VPC-D</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row18250195418296"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1444491016304">VPC-A is peered with VPC-E.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p444491010306">Peering-AE</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1844461073017">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p3444141073019">VPC-E</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row9278145812915"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1344410101309">VPC-A is peered with VPC-F.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p444441019307">Peering-AF</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p7444610163012">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p184441110113014">VPC-F</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207340272_row3278458172911"><td class="cellrowborder" valign="top" width="21.98%" headers="mcps1.3.5.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1144401063017">VPC-A is peered with VPC-G.</p>
</td>
<td class="cellrowborder" valign="top" width="24.97%" headers="mcps1.3.5.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p1844401013300">Peering-AG</p>
</td>
<td class="cellrowborder" valign="top" width="26.86%" headers="mcps1.3.5.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p12444171020304">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.19%" headers="mcps1.3.5.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207340272_p9445141003016">VPC-G</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table12903154901710" frame="border" border="1" rules="all"><caption><b>Table 7 </b>VPC route table details (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row9904154931716"><th align="left" class="cellrowborder" valign="top" width="10.07%" id="mcps1.3.5.5.2.6.1.1"><p id="en-us_topic_0046809840__p1290494941715">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.32%" id="mcps1.3.5.5.2.6.1.2"><p id="en-us_topic_0046809840__p8904549111716">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.47%" id="mcps1.3.5.5.2.6.1.3"><p id="en-us_topic_0046809840__p5904144910170">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="10.24%" id="mcps1.3.5.5.2.6.1.4"><p id="en-us_topic_0046809840__p59045490178">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="52.900000000000006%" id="mcps1.3.5.5.2.6.1.5"><p id="en-us_topic_0046809840__p11904104961717">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row69041949141714"><td class="cellrowborder" rowspan="6" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p1990444931710">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p12904194912175">10.0.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p12905449121710">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p2090594951719">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p490524991710">Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row119051649171715"><td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p169051049161718">192.168.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p5905184919177">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1490584912176">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p14905164911179">Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row62344175316"><td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p15986636163111">10.2.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p1723461717316">Peering-AD</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p14807389321">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p166724478326">Add a route with the CIDR block of VPC-D as the destination and Peering-AD as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row323471716319"><td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p139861936163119">10.3.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p174632115324">Peering-AE</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1548053803213">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p176723479329">Add a route with the CIDR block of VPC-E as the destination and Peering-AE as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row1086491310315"><td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p29869367314">172.17.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p19746421173220">Peering-AF</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1763114113327">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p201931249123214">Add a route with the CIDR block of VPC-F as the destination and Peering-AF as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row19865121319318"><td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p0986103653118">10.4.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p37461821103216">Peering-AG</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1976344173218">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p4193649133210">Add a route with the CIDR block of VPC-G as the destination and Peering-AG as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row7906194910173"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p321714349211">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p189066496174">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1590612495171">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p199061949141720">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p6906174910177">Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row1090610496178"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p34821425217">rtb-VPC-C</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p14906174910173">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1390684971715">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p119079499178">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p18907949201710">Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row1419016356344"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p67901466211">rtb-VPC-D</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p199143211354">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p15917325357">Peering-AD</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p691203243514">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p1991332123516">Add a route with the CIDR block of VPC-A as the destination and Peering-AD as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row102941948143412"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p1549035442110">rtb-VPC-E</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p10605183483518">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p146056340350">Peering-AE</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p16606183410357">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p6606193473517">Add a route with the CIDR block of VPC-A as the destination and Peering-AE as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row136177120357"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p4440185914214">rtb-VPC-F</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p1217143803514">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p617143803519">Peering-AF</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p6171163817354">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p1317153803520">Add a route with the CIDR block of VPC-A as the destination and Peering-AF as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row66178115351"><td class="cellrowborder" valign="top" width="10.07%" headers="mcps1.3.5.5.2.6.1.1 "><p id="en-us_topic_0046809840__p294323112212">rtb-VPC-G</p>
</td>
<td class="cellrowborder" valign="top" width="14.32%" headers="mcps1.3.5.5.2.6.1.2 "><p id="en-us_topic_0046809840__p3833539193514">172.16.0.0/16</p>
</td>
<td class="cellrowborder" valign="top" width="12.47%" headers="mcps1.3.5.5.2.6.1.3 "><p id="en-us_topic_0046809840__p20833133917355">Peering-AG</p>
</td>
<td class="cellrowborder" valign="top" width="10.24%" headers="mcps1.3.5.5.2.6.1.4 "><p id="en-us_topic_0046809840__p16833163973517">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.900000000000006%" headers="mcps1.3.5.5.2.6.1.5 "><p id="en-us_topic_0046809840__p1483313913516">Add a route with the CIDR block of VPC-A as the destination and Peering-AG as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="en-us_topic_0046809840__section6703221192012"><a name="en-us_topic_0046809840__section6703221192012"></a><a name="section6703221192012"></a><h4 class="sectiontitle">Peering Two VPCs with Overlapping CIDR Blocks</h4><div class="p" id="en-us_topic_0046809840__p13540114211215">As shown in <a href="#en-us_topic_0046809840__fig06955277200">Figure 4</a>, VPC-A and VPC-B have overlapping CIDR blocks, and their Subnet-A01 and Subnet-B01 also have overlapping CIDR blocks. In this case, a VPC peering connection can connect their Subnet-A02 and Subnet-B02 that do not overlap with each other.<div class="fignone" id="en-us_topic_0046809840__fig06955277200"><a name="en-us_topic_0046809840__fig06955277200"></a><a name="fig06955277200"></a><span class="figcap"><b>Figure 4 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__image15706103625817" src="en-us_image_0000001865662833.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table569552722016" frame="border" border="1" rules="all"><caption><b>Table 8 </b>Peering relationships (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row807361504"><th align="left" class="cellrowborder" valign="top" width="22%" id="mcps1.3.6.2.3.2.5.1.1"><p id="en-us_topic_0046809840__p11105632937">Peering Relationship</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.85%" id="mcps1.3.6.2.3.2.5.1.2"><p id="en-us_topic_0046809840__p10105132134">Peering Connection Name</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.85%" id="mcps1.3.6.2.3.2.5.1.3"><p id="en-us_topic_0046809840__p71059325312">Local VPC</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.3%" id="mcps1.3.6.2.3.2.5.1.4"><p id="en-us_topic_0046809840__p1110618320310">Peer VPC</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row1744391252"><td class="cellrowborder" valign="top" width="22%" headers="mcps1.3.6.2.3.2.5.1.1 "><p id="en-us_topic_0046809840__p1510611326318">VPC-A is peered with VPC-B.</p>
</td>
<td class="cellrowborder" valign="top" width="24.85%" headers="mcps1.3.6.2.3.2.5.1.2 "><p id="en-us_topic_0046809840__p101063321239">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="26.85%" headers="mcps1.3.6.2.3.2.5.1.3 "><p id="en-us_topic_0046809840__p131064321130">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.3%" headers="mcps1.3.6.2.3.2.5.1.4 "><p id="en-us_topic_0046809840__p1310720321310">VPC-B</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table56952279209" frame="border" border="1" rules="all"><caption><b>Table 9 </b>VPC route table details (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row1369542762013"><th align="left" class="cellrowborder" valign="top" width="9.69%" id="mcps1.3.6.2.4.2.6.1.1"><p id="en-us_topic_0046809840__p369511278202">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.11%" id="mcps1.3.6.2.4.2.6.1.2"><p id="en-us_topic_0046809840__p569582716205">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.950000000000001%" id="mcps1.3.6.2.4.2.6.1.3"><p id="en-us_topic_0046809840__p16952027162016">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="10.15%" id="mcps1.3.6.2.4.2.6.1.4"><p id="en-us_topic_0046809840__p20696827172010">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="53.1%" id="mcps1.3.6.2.4.2.6.1.5"><p id="en-us_topic_0046809840__p126969277206">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row5696102772013"><td class="cellrowborder" valign="top" width="9.69%" headers="mcps1.3.6.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p6696122714206">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="14.11%" headers="mcps1.3.6.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p669692742013">10.0.2.0/24</p>
</td>
<td class="cellrowborder" valign="top" width="12.950000000000001%" headers="mcps1.3.6.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p15696427162010">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.15%" headers="mcps1.3.6.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p10696142719208">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="53.1%" headers="mcps1.3.6.2.4.2.6.1.5 "><p id="en-us_topic_0046809840__p176964271204">Add a route with the CIDR block of Subnet-B02 as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row169614276204"><td class="cellrowborder" valign="top" width="9.69%" headers="mcps1.3.6.2.4.2.6.1.1 "><p id="en-us_topic_0046809840__p969612762012">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="14.11%" headers="mcps1.3.6.2.4.2.6.1.2 "><p id="en-us_topic_0046809840__p3696102782015">10.0.1.0/24</p>
</td>
<td class="cellrowborder" valign="top" width="12.950000000000001%" headers="mcps1.3.6.2.4.2.6.1.3 "><p id="en-us_topic_0046809840__p1469692711201">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.15%" headers="mcps1.3.6.2.4.2.6.1.4 "><p id="en-us_topic_0046809840__p36961327182020">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="53.1%" headers="mcps1.3.6.2.4.2.6.1.5 "><p id="en-us_topic_0046809840__p18696182717208">Add a route with the CIDR block of Subnet-A02 as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="section" id="en-us_topic_0046809840__section654114220445"><a name="en-us_topic_0046809840__section654114220445"></a><a name="section654114220445"></a><h4 class="sectiontitle">Peering ECSs in a Central VPC with ECSs in Two Other VPCs</h4><div class="p" id="en-us_topic_0046809840__p744724505912">As shown in <a href="#en-us_topic_0046809840__fig568511518481">Figure 5</a>, VPC-B and VPC-C have overlapping CIDR blocks, and their Subnet-B01 and Subnet-C01 have overlapping CIDR blocks. You can only create a VPC peering connection between ECSs.<ul id="en-us_topic_0046809840__ul87411046165916"><li id="en-us_topic_0046809840__li7123114945918">Use VPC peering connection Peering-AB to connect ECSs in Subnet-B01 and Subnet-A01.</li><li id="en-us_topic_0046809840__li1074113469592">Use VPC peering connection Peering-AC to connect ECSs in Subnet-C01 and Subnet-A01.</li></ul>
</div>
<div class="fignone" id="en-us_topic_0046809840__fig568511518481"><a name="en-us_topic_0046809840__fig568511518481"></a><a name="fig568511518481"></a><span class="figcap"><b>Figure 5 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__en-us_topic_0000001207500274_image137511237437" src="en-us_image_0000001818823118.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table137291117101413" frame="border" border="1" rules="all"><caption><b>Table 10 </b>Peering relationships (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__en-us_topic_0000001207500274_row1372919171146"><th align="left" class="cellrowborder" valign="top" width="22%" id="mcps1.3.7.4.2.5.1.1"><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p5729121715146">Peering Relationship</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="24.85%" id="mcps1.3.7.4.2.5.1.2"><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p117291717171417">Peering Connection Name</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.85%" id="mcps1.3.7.4.2.5.1.3"><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p672915170149">Local VPC</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="26.3%" id="mcps1.3.7.4.2.5.1.4"><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p13729171731411">Peer VPC</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__en-us_topic_0000001207500274_row2729181714143"><td class="cellrowborder" valign="top" width="22%" headers="mcps1.3.7.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p16729017141413">ECS-A01-1 in VPC-A is peered with ECS-B01 in VPC-B.</p>
</td>
<td class="cellrowborder" valign="top" width="24.85%" headers="mcps1.3.7.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p472961717142">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="26.85%" headers="mcps1.3.7.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p8729817171413">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.3%" headers="mcps1.3.7.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p12729517171415">VPC-B</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001207500274_row157291917191415"><td class="cellrowborder" valign="top" width="22%" headers="mcps1.3.7.4.2.5.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p15729131781419">ECS-A01-2 in VPC-A is peered with ECS-C01 in VPC-C.</p>
</td>
<td class="cellrowborder" valign="top" width="24.85%" headers="mcps1.3.7.4.2.5.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p2729517151411">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="26.85%" headers="mcps1.3.7.4.2.5.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p18729151718146">VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="26.3%" headers="mcps1.3.7.4.2.5.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001207500274_p972951712141">VPC-C</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__table117301117101418" frame="border" border="1" rules="all"><caption><b>Table 11 </b>VPC route table details (IPv4)</caption><thead align="left"><tr id="en-us_topic_0046809840__row1273011179148"><th align="left" class="cellrowborder" valign="top" width="9.67%" id="mcps1.3.7.5.2.6.1.1"><p id="en-us_topic_0046809840__p1730817201411">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.19%" id="mcps1.3.7.5.2.6.1.2"><p id="en-us_topic_0046809840__p3730181711415">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="12.629999999999999%" id="mcps1.3.7.5.2.6.1.3"><p id="en-us_topic_0046809840__p15730141710145">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="10.65%" id="mcps1.3.7.5.2.6.1.4"><p id="en-us_topic_0046809840__p1173018176143">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="52.86%" id="mcps1.3.7.5.2.6.1.5"><p id="en-us_topic_0046809840__p4730817151412">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__row1673001716145"><td class="cellrowborder" rowspan="2" valign="top" width="9.67%" headers="mcps1.3.7.5.2.6.1.1 "><p id="en-us_topic_0046809840__p196206320497">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="14.19%" headers="mcps1.3.7.5.2.6.1.2 "><p id="en-us_topic_0046809840__p4730131711414">10.0.0.139/32</p>
</td>
<td class="cellrowborder" valign="top" width="12.629999999999999%" headers="mcps1.3.7.5.2.6.1.3 "><p id="en-us_topic_0046809840__p107319174141">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.65%" headers="mcps1.3.7.5.2.6.1.4 "><p id="en-us_topic_0046809840__p187314175141">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.86%" headers="mcps1.3.7.5.2.6.1.5 "><p id="en-us_topic_0046809840__p18731417101417">Add a route with the private IP address of ECS-B01 as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row149401134513"><td class="cellrowborder" valign="top" headers="mcps1.3.7.5.2.6.1.1 "><p id="en-us_topic_0046809840__p69416131952">10.0.0.71/32</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.7.5.2.6.1.2 "><p id="en-us_topic_0046809840__p207291163713">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.7.5.2.6.1.3 "><p id="en-us_topic_0046809840__p17295165718">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.7.5.2.6.1.4 "><p id="en-us_topic_0046809840__p47291716278">Add a route with the private IP address of ECS-C01 as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row1273111761417"><td class="cellrowborder" valign="top" width="9.67%" headers="mcps1.3.7.5.2.6.1.1 "><p id="en-us_topic_0046809840__p20252183824918">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="14.19%" headers="mcps1.3.7.5.2.6.1.2 "><p id="en-us_topic_0046809840__p682511307816">172.16.0.111/32</p>
</td>
<td class="cellrowborder" valign="top" width="12.629999999999999%" headers="mcps1.3.7.5.2.6.1.3 "><p id="en-us_topic_0046809840__p177314173149">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" width="10.65%" headers="mcps1.3.7.5.2.6.1.4 "><p id="en-us_topic_0046809840__p77311517131411">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.86%" headers="mcps1.3.7.5.2.6.1.5 "><p id="en-us_topic_0046809840__p6731141731410">Add a route with the private IP address of ECS-A01-1 as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__row1673291781413"><td class="cellrowborder" valign="top" width="9.67%" headers="mcps1.3.7.5.2.6.1.1 "><p id="en-us_topic_0046809840__p28711645144917">rtb-VPC-C</p>
</td>
<td class="cellrowborder" valign="top" width="14.19%" headers="mcps1.3.7.5.2.6.1.2 "><p id="en-us_topic_0046809840__p1937011998">172.16.0.218/32</p>
</td>
<td class="cellrowborder" valign="top" width="12.629999999999999%" headers="mcps1.3.7.5.2.6.1.3 "><p id="en-us_topic_0046809840__p1173216170144">Peering-AC</p>
</td>
<td class="cellrowborder" valign="top" width="10.65%" headers="mcps1.3.7.5.2.6.1.4 "><p id="en-us_topic_0046809840__p6732161720148">Custom</p>
</td>
<td class="cellrowborder" valign="top" width="52.86%" headers="mcps1.3.7.5.2.6.1.5 "><p id="en-us_topic_0046809840__p207321417151419">Add a route with the private IP address of ECS-A01-2 as the destination and Peering-AC as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="en-us_topic_0046809840__section0306616175518"><a name="en-us_topic_0046809840__section0306616175518"></a><a name="section0306616175518"></a><h4 class="sectiontitle">Invalid VPC Peering Connections</h4><p id="en-us_topic_0046809840__p5139193515518">If VPCs with the same CIDR block also include subnets that overlap, VPC peering connections are not usable. VPC-A and VPC-B have the same CIDR block and their subnets have the same CIDR block. If a VPC peering connection is created between VPC-A and VPC-B, traffic cannot be routed between them because there are routes with the same destination.</p>
<div class="p" id="en-us_topic_0046809840__p6297349163415">In the rtb-VPC-A route table, the custom route for routing traffic from VPC-A to VPC-B and the local route have overlapping destinations. The local route has a higher priority and traffic will be forwarded within VPC-A and cannot reach VPC-B.<div class="fignone" id="en-us_topic_0046809840__en-us_topic_0000001252180225_fig465519155457"><span class="figcap"><b>Figure 6 </b>Networking diagram (IPv4)</span><br><span><img class="eddx" id="en-us_topic_0046809840__en-us_topic_0000001252180225_image42928328228" src="en-us_image_0000001818982898.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="en-us_topic_0046809840__en-us_topic_0000001252180225_table117301117101418" frame="border" border="1" rules="all"><caption><b>Table 12 </b>VPC route table details</caption><thead align="left"><tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row1273011179148"><th align="left" class="cellrowborder" valign="top" width="8.55%" id="mcps1.3.8.3.2.2.6.1.1"><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p1730817201411">Route Table</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="22.7%" id="mcps1.3.8.3.2.2.6.1.2"><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p3730181711415">Destination</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="11.48%" id="mcps1.3.8.3.2.2.6.1.3"><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p15730141710145">Next Hop</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="9.2%" id="mcps1.3.8.3.2.2.6.1.4"><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p1173018176143">Route Type</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="48.07%" id="mcps1.3.8.3.2.2.6.1.5"><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p4730817151412">Description</p>
</th>
</tr>
</thead>
<tbody><tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row4730181718141"><td class="cellrowborder" rowspan="3" valign="top" width="8.55%" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p273001761410">rtb-VPC-A</p>
</td>
<td class="cellrowborder" valign="top" width="22.7%" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p973012175147">10.0.0.0/24</p>
</td>
<td class="cellrowborder" valign="top" width="11.48%" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p11730111710149">Local</p>
</td>
<td class="cellrowborder" valign="top" width="9.2%" headers="mcps1.3.8.3.2.2.6.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p67301917201417">System</p>
</td>
<td class="cellrowborder" rowspan="2" valign="top" width="48.07%" headers="mcps1.3.8.3.2.2.6.1.5 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p673010176141"><span id="en-us_topic_0046809840__en-us_topic_0000001252180225_text187303172147">Local routes are added by the system for internal communication in a VPC.</span></p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row72112019153517"><td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p32115198355">10.0.1.0/24</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p1816211216366">Local</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p1716282173615">System</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row1673001716145"><td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p4730131711414">10.0.0.0/16 (VPC-B)</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p107319174141">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p187314175141">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p18731417101417">Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row18731131719141"><td class="cellrowborder" rowspan="3" valign="top" width="8.55%" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p873171701416">rtb-VPC-B</p>
</td>
<td class="cellrowborder" valign="top" width="22.7%" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p147311217191410">10.0.0.0/24</p>
</td>
<td class="cellrowborder" valign="top" width="11.48%" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p1273112179145">Local</p>
</td>
<td class="cellrowborder" valign="top" width="9.2%" headers="mcps1.3.8.3.2.2.6.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p97311617101412">System</p>
</td>
<td class="cellrowborder" rowspan="2" valign="top" width="48.07%" headers="mcps1.3.8.3.2.2.6.1.5 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p16731617101420"><span id="en-us_topic_0046809840__text6521639153212">Local routes are added by the system for internal communication in a VPC.</span></p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row91271631123714"><td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p188077366379">10.0.1.0/24</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p48071736153715">Local</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p380773643712">System</p>
</td>
</tr>
<tr id="en-us_topic_0046809840__en-us_topic_0000001252180225_row1273111761417"><td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.1 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p682511307816">10.0.0.0/16 (VPC-A)</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.2 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p177314173149">Peering-AB</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.3 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p77311517131411">Custom</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.8.3.2.2.6.1.4 "><p id="en-us_topic_0046809840__en-us_topic_0000001252180225_p6731141731410">Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</div>
<div>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="vpc_peering_0000.html">VPC Peering Connection</a></div>
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