Help Center/ Virtual Private Cloud/ Best Practices/ VPC Peering Connection Configurations/ Using a VPC Peering Connection to Connect Two VPCs
Updated on 2024-08-07 GMT+08:00
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Using a VPC Peering Connection to Connect Two VPCs

You can configure a VPC peering connection and set the destination of the routes added to VPC route tables to the peer VPC CIDR block. In this way, all resources in the two VPCs are connected. Table 1 shows example scenarios.
Table 1 Scenario description

Scenario

Scenario Description

IP Address Version

Example

Two VPCs peered together

You have two VPCs that require full access to each other's resources.

For example, your company has VPC-A for the human resource department, and VPC-B for the finance department. The two departments require full access to each other's resources.

IPv4

Two VPCs Peered Together (IPv4)

IPv6

Two VPCs Peered Together (IPv6)

Multiple VPCs peered together

You have multiple VPCs that require access to each other's resources.

For example, your company has VPC-A for the human resource department, VPC-B for the finance department, and VPC-C for the marketing department. These departments require full access to each other's resources.

IPv4

Multiple VPCs Peered Together (IPv4)

IPv4

Multiple VPCs Peered Together Through Transitive Peering Connections (IPv4)

IPv6

Multiple VPCs Peered Together (IPv6)

One central VPC peered with two VPCs

You have a central VPC that requires access to two peer VPCs, and similarly, the peer VPCs require access to the central VPC. However, the two peer VPCs need to be isolated from each other.

For example, public services (such as databases) are deployed on VPC-A. Both VPC-B and VPC-C need to access the databases, but they do not need to access each other.

IPv4

One Central VPC Peered with Two VPCs (IPv4)

IPv6

One Central VPC Peered with Two VPCs (IPv6)

One central VPC with primary and secondary CIDR blocks peered with two VPCs

You have a central VPC that has both primary and secondary CIDR blocks. The central VPC needs to communicate with two peer VPCs, but the peer VPCs need to be isolated from each other.

IPv4

One Central VPC with Primary and Secondary CIDR Blocks Peered with Two VPCs (IPv4)

One central VPC peered with multiple VPCs

You have a central VPC that requires access to the multiple peer VPCs, and similarly, the peer VPCs require access to the central VPC. However, the peer VPCs need to be isolated from each other.

For example, public services (such as databases) are deployed on your central VPC-A. VPC-B, VPC-C, VPC-D, VPC-E, VPC-F, and VPC-G need to access the databases, but these VPCs do not need to access each other.

IPv4

One Central VPC Peered with Multiple VPCs (IPv4)

IPv6

One Central VPC Peered with Multiple VPCs (IPv6)

Notes and Constraints

If you create a VPC peering connection that connects entire CIDR blocks of two VPCs, the VPC CIDR blocks cannot overlap. Otherwise, the VPC peering connection does not take effect. For details, see Invalid VPC Peering for Overlapping VPC CIDR Blocks.

Even if you intend to use the VPC peering connection for IPv6 communication only, you cannot create a VPC peering connection if the VPCs have matching or overlapping IPv4 CIDR blocks. In all examples in this section, the IPv4 CIDR blocks of any VPCs connected by a VPC peering connection do not overlap.

Two VPCs Peered Together (IPv4)

Create Peering-AB between VPC-A and VPC-B. The CIDR blocks of VPC-A and VPC-B do not overlap.
  • For details about resource planning, see Table 2.
  • For details about VPC peering relationships, see Table 3.
Figure 1 Networking diagram (IPv4)
Table 2 Resource planning details (IPv4)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Subnet-A02

172.16.1.0/24

rtb-VPC-A

ECS-A02

172.16.1.91

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

Subnet-B02

10.0.1.0/24

rtb-VPC-B

ECS-B02

10.0.1.167
Table 3 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B
After the VPC peering connection is created, add the following routes to the route tables of the local and peer VPCs:
Table 4 VPC route tables (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.1.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

10.0.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

Two VPCs Peered Together (IPv6)

Create Peering-AB between VPC-A and VPC-B. The subnets of VPC-A and VPC-B have both IPv4 and IPv6 CIDR blocks and their IPv4 CIDR blocks do not overlap.
  • For details about resource planning, see Table 5.
  • For details about VPC peering relationships, see Table 6.
Figure 2 Networking diagram (IPv6)
Table 5 Resource planning details (IPv6)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01
  • IPv4: 172.16.0.0/24
  • IPv6: 2407:c080:802:c34::/64

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server
  • IPv4: 172.16.0.111
  • IPv6: 2407:c080:802:c34:a925:f12e:cfa0:8edb

Subnet-A02
  • IPv4: 172.16.1.0/24
  • IPv6: 2407:c080:802:c37::/64

rtb-VPC-A

ECS-A02
  • IPv4: 172.16.1.91
  • IPv6: 2407:c080:802:c37:594b:4c0f:2fcd:8b72

VPC-B

10.0.0.0/16

Subnet-B01
  • IPv4: 10.0.0.0/24
  • IPv6: 2407:c080:802:c35::/64

rtb-VPC-B

ECS-B01
  • IPv4: 10.0.0.139
  • IPv6: 2407:c080:802:c35:493:33f4:4531:5162

Subnet-B02
  • IPv4: 10.0.1.0/24
  • IPv6: 2407:c080:802:c38::/64

rtb-VPC-B

ECS-B02
  • IPv4: 10.0.1.167
  • IPv6: 2407:c080:802:c38:b9a9:aa03:2700:c1cf
Table 6 Peering relationships (IPv6)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B
After the VPC peering connection is created, add the following routes to the route tables of the local and peer VPCs:
Table 7 VPC route tables (IPv6)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c34::/64

Local

System

172.16.1.0/24

Local

System

2407:c080:802:c37::/64

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c35::/64 (Subnet-B01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-B01 and Subnet-B02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c38::/64 (Subnet-B02)

Peering-AB

Custom

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c35::/64

Local

System

10.0.1.0/24

Local

System

2407:c080:802:c38::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AB

Custom

You can view IPv6 addresses of VPC subnets on the management console. To enable communication between entire CIDR blocks of two VPCs, you need to add routes with IPv6 CIDR blocks of all subnets in the VPCs as the destinations one by one.

Multiple VPCs Peered Together (IPv4)

If multiple VPCs need to communicate with each other, their CIDR blocks cannot overlap and you need to create a VPC peering connection between every two VPCs.
  • For details about resource planning, see Table 8.
  • For details about VPC peering relationships, see Table 9.
Figure 3 Networking diagram (IPv4)
Table 8 Resource planning details (IPv4)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Subnet-A02

172.16.1.0/24

rtb-VPC-A

ECS-A02

172.16.1.91

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

Subnet-B02

10.0.1.0/24

rtb-VPC-B

ECS-B02

10.0.1.167

VPC-C

192.168.0.0/16

Subnet-C01

192.168.0.0/24

rtb-VPC-C

ECS-C01

192.168.0.194

Subnet-C02

192.168.1.0/24

rtb-VPC-C

ECS-C02

192.168.1.200
Table 9 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C

VPC-B is peered with VPC-C.

Peering-BC

VPC-B

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 10 VPC route tables (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.1.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

10.0.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-BC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-BC as the next hop.

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

192.168.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.

10.0.0.0/16 (VPC-B)

Peering-BC

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-BC as the next hop.

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

Multiple VPCs Peered Together Through Transitive Peering Connections (IPv4)

VPC peering connections are transitive. As shown in Figure 4, there is a VPC peering connection between VPC-A and VPC-B, and between VPC-A and VPC-C. To enable communication between VPC-B and VP-C, you can use either of the following methods:

Figure 4 Transitive VPC peering connections
Table 11 Resource planning details (IPv4)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Subnet-A02

172.16.1.0/24

rtb-VPC-A

ECS-A02

172.16.1.91

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

Subnet-B02

10.0.1.0/24

rtb-VPC-B

ECS-B02

10.0.1.167

VPC-C

192.168.0.0/16

Subnet-C01

192.168.0.0/24

rtb-VPC-C

ECS-C01

192.168.0.194

Subnet-C02

192.168.1.0/24

rtb-VPC-C

ECS-C02

192.168.1.200
Table 12 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 13 VPC route tables (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.1.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

10.0.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AB

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AB as the next hop.

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

192.168.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.

10.0.0.0/16 (VPC-B)

Peering-AC

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AC as the next hop.

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

Multiple VPCs Peered Together (IPv6)

If multiple VPCs need to communicate with each other, you need to create a VPC peering connection between every two VPCs. In this example, subnets in VPC-A, VPC-B, and VPC-C have IPv6 CIDR blocks and the IPv4 CIDR blocks of VPC-A, VPC-B, and VPC-C cannot overlap.
  • For details about resource planning, see Table 14.
  • For details about VPC peering relationships, see Table 15.
Figure 5 Networking diagram (IPv6)
Table 14 Resource planning details (IPv6)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01
  • IPv4: 172.16.0.0/24
  • IPv6: 2407:c080:802:c34::/64

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server
  • IPv4: 172.16.0.111
  • IPv6: 2407:c080:802:c34:a925:f12e:cfa0:8edb

Subnet-A02
  • IPv4: 172.16.1.0/24
  • IPv6: 2407:c080:802:c37::/64

rtb-VPC-A

ECS-A02
  • IPv4: 172.16.1.91
  • IPv6: 2407:c080:802:c37:594b:4c0f:2fcd:8b72

VPC-B

10.0.0.0/16

Subnet-B01
  • IPv4: 10.0.0.0/24
  • IPv6: 2407:c080:802:c35::/64

rtb-VPC-B

ECS-B01
  • IPv4: 10.0.0.139
  • IPv6: 2407:c080:802:c35:493:33f4:4531:5162

Subnet-B02
  • IPv4: 10.0.1.0/24
  • IPv6: 2407:c080:802:c38::/64

rtb-VPC-B

ECS-B02
  • IPv4: 10.0.1.167
  • IPv6: 2407:c080:802:c38:b9a9:aa03:2700:c1cf

VPC-C

192.168.0.0/16

Subnet-C01
  • IPv4: 192.168.0.0/24
  • IPv6: 2407:c080:802:c3c::/64

rtb-VPC-C

ECS-C01
  • IPv4: 192.168.0.194
  • IPv6: 2407:c080:802:c3c:d2f3:d891:24f5:f4af

Subnet-C02
  • IPv4: 192.168.1.0/24
  • IPv6: 2407:c080:802:c3d::/64

rtb-VPC-C

ECS-C02
  • IPv4: 192.168.1.200
  • IPv6: 2407:c080:802:c3d:e9ca:169a:390c:74d1
Table 15 Peering relationships (IPv6)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C

VPC-B is peered with VPC-C.

Peering-BC

VPC-B

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 16 VPC route tables (IPv6)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c34::/64

Local

System

172.16.1.0/24

Local

System

2407:c080:802:c37::/64

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c35::/64 (Subnet-B01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-B01 and Subnet-B02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c38::/64 (Subnet-B02)

Peering-AB

Custom

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c3c::/64 (Subnet-C01)

Peering-AC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-C01 and Subnet-C02 as the destinations and Peering-AC as the next hop for IPv6 communication.

2407:c080:802:c3d::/64 (Subnet-C02)

Peering-AC

Custom

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c35::/64

Local

System

10.0.1.0/24

Local

System

2407:c080:802:c38::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AB

Custom

192.168.0.0/16 (VPC-C)

Peering-BC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-BC as the next hop for IPv4 communication.

2407:c080:802:c3c::/64 (Subnet-C01)

Peering-BC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-C01 and Subnet-C02 as the destinations and Peering-BC as the next hop for IPv6 communication.

2407:c080:802:c3d::/64 (Subnet-C02)

Peering-BC

Custom

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c3c::/64

Local

System

192.168.1.0/24

Local

System

2407:c080:802:c3d::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AC as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AC

Custom

10.0.0.0/16 (VPC-B)

Peering-BC

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-BC as the next hop for IPv4 communication.

2407:c080:802:c35::/64 (Subnet-B01)

Peering-BC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-B01 and Subnet-B02 as the destinations and Peering-BC as the next hop for IPv6 communication.

2407:c080:802:c38::/64 (Subnet-B02)

Peering-BC

Custom

You can view IPv6 addresses of VPC subnets on the management console. To enable communication between entire CIDR blocks of two VPCs, you need to add routes with IPv6 CIDR blocks of all subnets in the VPCs as the destinations one by one.

One Central VPC Peered with Two VPCs (IPv4)

Create Peering-AB between VPC-A and VPC-B, and Peering-AC between VPC-A and VPC-C. The three VPCs do not have overlapping CIDR blocks.
  • For details about resource planning, see Table 17.
  • For details about VPC peering relationships, see Table 18.
Figure 6 Networking diagram (IPv4)
Table 17 Resource planning details (IPv4)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Subnet-A02

172.16.1.0/24

rtb-VPC-A

ECS-A02

172.16.1.91

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

Subnet-B02

10.0.1.0/24

rtb-VPC-B

ECS-B02

10.0.1.167

VPC-C

192.168.0.0/16

Subnet-C01

192.168.0.0/24

rtb-VPC-C

ECS-C01

192.168.0.194

Subnet-C02

192.168.1.0/24

rtb-VPC-C

ECS-C02

192.168.1.200
Table 18 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 19 VPC route table details (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.1.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

10.0.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

192.168.1.0/24

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

One Central VPC Peered with Two VPCs (IPv6)

Create Peering-AB between VPC-A and VPC-B, and Peering-AC between VPC-A and VPC-C. Each VPC has IPv6 subnets. The IPv4 CIDR blocks of the three VPCs do not overlap with each other.
  • For details about resource planning, see Table 20.
  • For details about VPC peering relationships, see Table 21.
Figure 7 Networking diagram (IPv6)
Table 20 Resource planning details (IPv6)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01
  • IPv4: 172.16.0.0/24
  • IPv6: 2407:c080:802:c34::/64

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server
  • IPv4: 172.16.0.111
  • IPv6: 2407:c080:802:c34:a925:f12e:cfa0:8edb

Subnet-A02
  • IPv4: 172.16.1.0/24
  • IPv6: 2407:c080:802:c37::/64

rtb-VPC-A

ECS-A02
  • IPv4: 172.16.1.91
  • IPv6: 2407:c080:802:c37:594b:4c0f:2fcd:8b72

VPC-B

10.0.0.0/16

Subnet-B01
  • IPv4: 10.0.0.0/24
  • IPv6: 2407:c080:802:c35::/64

rtb-VPC-B

ECS-B01
  • IPv4: 10.0.0.139
  • IPv6: 2407:c080:802:c35:493:33f4:4531:5162

Subnet-B02
  • IPv4: 10.0.1.0/24
  • IPv6: 2407:c080:802:c38::/64

rtb-VPC-B

ECS-B02
  • IPv4: 10.0.1.167
  • IPv6: 2407:c080:802:c38:b9a9:aa03:2700:c1cf

VPC-C

192.168.0.0/16

Subnet-C01
  • IPv4: 192.168.0.0/24
  • IPv6: 2407:c080:802:c3c::/64

rtb-VPC-C

ECS-C01
  • IPv4: 192.168.0.194
  • IPv6: 2407:c080:802:c3c:d2f3:d891:24f5:f4af

Subnet-C02
  • IPv4: 192.168.1.0/24
  • IPv6: 2407:c080:802:c3d::/64

rtb-VPC-C

ECS-C02
  • IPv4: 192.168.1.200
  • IPv6: 2407:c080:802:c3d:e9ca:169a:390c:74d1
Table 21 Peering relationships (IPv6)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 22 VPC route table details (IPv6)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c34::/64

Local

System

172.16.1.0/24

Local

System

2407:c080:802:c37::/64

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c35::/64 (Subnet-B01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-B01 and Subnet-B02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c38::/64 (Subnet-B02)

Peering-AB

Custom

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c3c::/64 (Subnet-C01)

Peering-AC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-C01 and Subnet-C02 as the destinations and Peering-AC as the next hop for IPv6 communication.

2407:c080:802:c3d::/64 (Subnet-C02)

Peering-AC

Custom

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c35::/64

Local

System

10.0.1.0/24

Local

System

2407:c080:802:c38::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AB

Custom

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c3c::/64

Local

System

192.168.1.0/24

Local

System

2407:c080:802:c3d::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AC as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AC

Custom

You can view IPv6 addresses of VPC subnets on the management console. To enable communication between entire CIDR blocks of two VPCs, you need to add routes with IPv6 CIDR blocks of all subnets in the VPCs as the destinations one by one.

One Central VPC with Primary and Secondary CIDR Blocks Peered with Two VPCs (IPv4)

Create Peering-AB between VPC-A and VPC-B, and Peering-AC between VPC-A and VPC-C. VPC-A has both primary and secondary CIDR blocks. The three VPCs do not have overlapping CIDR blocks.
  • For details about resource planning, see Table 23.
  • For details about VPC peering relationships, see Table 24.
Figure 8 Networking diagram (IPv4)
Table 23 Resource planning details

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

Primary CIDR block: 172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Secondary CIDR block:

192.167.0.0/16

Subnet-A-Extend01

192.167.0.0/24

rtb-VPC-A

ECS-A-Extend01

192.167.0.100

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

VPC-C

192.168.0.0/16

Subnet-C01

192.168.0.0/24

rtb-VPC-C

ECS-C01

192.168.0.194
Table 24 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 25 VPC route table details (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

192.167.0.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (Primary CIDR block of VPC-A)

Peering-AB

Custom

Add routes with the primary and secondary CIDR blocks of VPC-A as the destinations and Peering-AB as the next hop.

192.167.0.0/16 (Secondary CIDR block of VPC-A)

Peering-AB

Custom

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (Primary CIDR block of VPC-A)

Peering-AC

Custom

Add routes with the primary and secondary CIDR blocks of VPC-A as the destinations and Peering-AC as the next hop.

192.167.0.0/16 (Secondary CIDR block of VPC-A)

Peering-AC

Custom

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

One Central VPC Peered with Multiple VPCs (IPv4)

Create a VPC peering connection between VPC-A and VPC-B, between VPC-A and VPC-C, between VPC-A and VPC-D, between VPC-A and VPC-E, between VPC-A and VPC-F, and between VPC-A and VPC-G. The CIDR blocks of these VPCs do not overlap.
  • For details about resource planning, see Table 26.
  • For details about VPC peering relationships, see Table 27.
Figure 9 Networking diagram (IPv4)
Table 26 Resource planning details (IPv4)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01

172.16.0.0/24

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server

172.16.0.111

Subnet-A02

172.16.1.0/24

rtb-VPC-A

ECS-A02

172.16.1.91

VPC-B

10.0.0.0/16

Subnet-B01

10.0.0.0/24

rtb-VPC-B

ECS-B01

10.0.0.139

VPC-C

192.168.0.0/16

Subnet-C01

192.168.0.0/24

rtb-VPC-C

ECS-C01

192.168.0.194

VPC-D

10.2.0.0/16

Subnet-D01

10.2.0.0/24

rtb-VPC-D

ECS-D01

10.2.0.237

VPC-E

10.3.0.0/16

Subnet-E01

10.3.0.0/24

rtb-VPC-E

ECS-E01

10.3.0.87

VPC-F

172.17.0.0/16

Subnet-F01

172.17.0.0/24

rtb-VPC-F

ECS-F01

172.17.0.103

VPC-G

10.4.0.0/16

Subnet-G01

10.4.0.0/24

rtb-VPC-G

ECS-G01

10.4.0.10
Table 27 Peering relationships (IPv4)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C

VPC-A is peered with VPC-D.

Peering-AD

VPC-A

VPC-D

VPC-A is peered with VPC-E.

Peering-AE

VPC-A

VPC-E

VPC-A is peered with VPC-F.

Peering-AF

VPC-A

VPC-F

VPC-A is peered with VPC-G.

Peering-AG

VPC-A

VPC-G
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 28 VPC route table details (IPv4)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.1.0/24

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop.

10.2.0.0/16 (VPC-D)

Peering-AD

Custom

Add a route with the CIDR block of VPC-D as the destination and Peering-AD as the next hop.

10.3.0.0/16 (VPC-E)

Peering-AE

Custom

Add a route with the CIDR block of VPC-E as the destination and Peering-AE as the next hop.

172.17.0.0/16 (VPC-F)

Peering-AF

Custom

Add a route with the CIDR block of VPC-F as the destination and Peering-AF as the next hop.

10.4.0.0/16 (VPC-G)

Peering-AG

Custom

Add a route with the CIDR block of VPC-G as the destination and Peering-AG as the next hop.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop.

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop.

rtb-VPC-D

10.2.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AD

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AD as the next hop.

rtb-VPC-E

10.3.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AE

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AE as the next hop.

rtb-VPC-F

172.17.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AF

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AF as the next hop.

rtb-VPC-G

10.4.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

172.16.0.0/16 (VPC-A)

Peering-AG

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AG as the next hop.

If the destination of a route in a route table of a VPC is set to the CIDR block of a peer VPC and the CIDR blocks of the two VPCs do not overlap, the VPCs can have full access to each other's resources.

One Central VPC Peered with Multiple VPCs (IPv6)

Create a VPC peering connection between VPC-A and VPC-B, between VPC-A and VPC-C, between VPC-A and VPC-D, between VPC-A and VPC-E, between VPC-A and VPC-F, and between VPC-A and VPC-G. Each VPC has IPv6 subnets. The IPv4 CIDR blocks of these VPCs do not overlap.
  • For details about resource planning, see Table 29.
  • For details about VPC peering relationships, see Table 30.
Figure 10 Networking diagram (IPv6)
Table 29 Resource planning details (IPv6)

VPC Name

VPC CIDR Block

Subnet Name

Subnet CIDR Block

Subnet Route Table

ECS Name

Security Group

Private IP Address

VPC-A

172.16.0.0/16

Subnet-A01
  • IPv4: 172.16.0.0/24
  • IPv6: 2407:c080:802:c34::/64

rtb-VPC-A

ECS-A01

sg-web: general-purpose web server
  • IPv4: 172.16.0.111
  • IPv6: 2407:c080:802:c34:a925:f12e:cfa0:8edb

Subnet-A02
  • IPv4: 172.16.1.0/24
  • IPv6: 2407:c080:802:c37::/64

rtb-VPC-A

ECS-A02
  • IPv4: 172.16.1.91
  • IPv6: 2407:c080:802:c37:594b:4c0f:2fcd:8b72

VPC-B

10.0.0.0/16

Subnet-B01
  • IPv4: 10.0.0.0/24
  • IPv6: 2407:c080:802:c35::/64

rtb-VPC-B

ECS-B01
  • IPv4: 10.0.0.139
  • IPv6: 2407:c080:802:c35:493:33f4:4531:5162

VPC-C

192.168.0.0/16

Subnet-C01
  • IPv4: 192.168.0.0/24
  • IPv6: 2407:c080:802:c3c::/64

rtb-VPC-C

ECS-C01
  • IPv4: 192.168.0.194
  • IPv6: 2407:c080:802:c3c:d2f3:d891:24f5:f4af

VPC-D

10.2.0.0/16

Subnet-D01
  • IPv4: 10.2.0.0/24
  • IPv6: 2407:c080:802:c45::/64

rtb-VPC-D

ECS-D01
  • IPv4: 10.2.0.237
  • IPv6: 2407:c080:802:c45:6bb7:f161:3596:6e4c

VPC-E

10.3.0.0/16

Subnet-E01
  • IPv4: 10.3.0.0/24
  • IPv6: 2407:c080:802:c46::/64

rtb-VPC-E

ECS-E01
  • IPv4: 10.3.0.87
  • IPv6: 2407:c080:802:c46:2a2f:558a:85da:4c70

VPC-F

172.17.0.0/16

Subnet-F01
  • IPv4: 172.17.0.0/24
  • IPv6: 2407:c080:802:c47::/64

rtb-VPC-F

ECS-F01
  • IPv4: 172.17.0.103
  • IPv6: 2407:c080:802:c47:b5e2:e6f0:c42b:44fd

VPC-G

10.4.0.0/16

Subnet-G01
  • IPv4: 10.4.0.0/24
  • IPv6: 2407:c080:802:c48::/64

rtb-VPC-G

ECS-G01
  • IPv4: 10.4.0.10
  • IPv6: 2407:c080:802:c48:3020:f48c:4e54:aa17
Table 30 Peering relationships (IPv6)

Peering Relationship

Peering Connection Name

Local VPC

Peer VPC

VPC-A is peered with VPC-B.

Peering-AB

VPC-A

VPC-B

VPC-A is peered with VPC-C.

Peering-AC

VPC-A

VPC-C

VPC-A is peered with VPC-D.

Peering-AD

VPC-A

VPC-D

VPC-A is peered with VPC-E.

Peering-AE

VPC-A

VPC-E

VPC-A is peered with VPC-F.

Peering-AF

VPC-A

VPC-F

VPC-A is peered with VPC-G.

Peering-AG

VPC-A

VPC-G
After the VPC peering connections are created, add the following routes to the route tables of the local and peer VPCs:
Table 31 VPC route table details (IPv6)

Route Table

Destination

Next Hop

Route Type

Description

rtb-VPC-A

172.16.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c34::/64

Local

System

172.16.1.0/24

Local

System

2407:c080:802:c37::/64

Local

System

10.0.0.0/16 (VPC-B)

Peering-AB

Custom

Add a route with the CIDR block of VPC-B as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c35::/64 (Subnet-B01)

Peering-AB

Custom

Add a route with the IPv6 CIDR block of Subnet-B01 as the destination and Peering-AB as the next hop for IPv6 communication.

192.168.0.0/16 (VPC-C)

Peering-AC

Custom

Add a route with the CIDR block of VPC-C as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c3c::/64 (Subnet-C01)

Peering-AC

Custom

Add a route with the IPv6 CIDR block of Subnet-C01 as the destination and Peering-AC as the next hop for IPv6 communication.

10.2.0.0/16 (VPC-D)

Peering-AD

Custom

Add a route with the CIDR block of VPC-D as the destination and Peering-AD as the next hop for IPv4 communication.

2407:c080:802:c45::/64 (Subnet-D01)

Peering-AD

Custom

Add a route with the IPv6 CIDR block of Subnet-D01 as the destination and Peering-AD as the next hop for IPv6 communication.

10.3.0.0/16 (VPC-E)

Peering-AE

Custom

Add a route with the CIDR block of VPC-E as the destination and Peering-AE as the next hop for IPv4 communication.

2407:c080:802:c46::/64 (Subnet-E01)

Peering-AE

Custom

Add a route with the IPv6 CIDR block of Subnet-E01 as the destination and Peering-AE as the next hop for IPv6 communication.

172.17.0.0/16 (VPC-F)

Peering-AF

Custom

Add a route with the CIDR block of VPC-F as the destination and Peering-AF as the next hop for IPv4 communication.

2407:c080:802:c47::/64 (Subnet-F01)

Peering-AF

Custom

Add a route with the IPv6 CIDR block of Subnet-F01 as the destination and Peering-AF as the next hop for IPv6 communication.

10.4.0.0/16 (VPC-G)

Peering-AG

Custom

Add a route with the CIDR block of VPC-G as the destination and Peering-AG as the next hop for IPv4 communication.

2407:c080:802:c48::/64 (Subnet-G01)

Peering-AG

Custom

Add a route with the IPv6 CIDR block of Subnet-G01 as the destination and Peering-AG as the next hop for IPv6 communication.

rtb-VPC-B

10.0.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c35::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AB

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AB as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AB

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AB as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AB

Custom

rtb-VPC-C

192.168.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c3c::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AC

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AC as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AC

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AC as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AC

Custom

rtb-VPC-D

10.2.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c45::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AD

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AD as the next hop for IPv4 communication.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AD

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AD as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AD

Custom

rtb-VPC-E

10.3.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c46::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AE

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AE as the next hop.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AE

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AE as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AE

Custom

rtb-VPC-F

172.17.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c47::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AF

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AF as the next hop.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AF

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AF as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AF

Custom

rtb-VPC-G

10.4.0.0/24

Local

System

Local routes are automatically added for communications within a VPC.

2407:c080:802:c48::/64

Local

System

172.16.0.0/16 (VPC-A)

Peering-AG

Custom

Add a route with the CIDR block of VPC-A as the destination and Peering-AG as the next hop.

2407:c080:802:c34::/64 (Subnet-A01)

Peering-AG

Custom

Add routes with the IPv6 CIDR blocks of Subnet-A01 and Subnet-A02 as the destinations and Peering-AG as the next hop for IPv6 communication.

2407:c080:802:c37::/64 (Subnet-A02)

Peering-AG

Custom

You can view IPv6 addresses of VPC subnets on the management console. To enable communication between entire CIDR blocks of two VPCs, you need to add routes with IPv6 CIDR blocks of all subnets in the VPCs as the destinations one by one.