Collecting ECS Network Information

Scenarios

Before configuring policy-based routes for an ECS with multiple network interfaces, you need to collect network information about the ECS.

• Table 1 lists the information to be collected for a Linux ECS using IPv4.

  Table 1 Linux ECS using IPv4

  ECS	Primary Network Interface	Extended Network Interface	How to Obtain
  Source	IP address: 10.0.0.115 Subnet: 10.0.0.0/24 Subnet gateway: 10.0.0.1	IP address: 10.0.1.183 Subnet: 10.0.1.0/24 Subnet gateway: 10.0.1.1	Obtaining ECS Network Interface Addresses Obtaining Subnet CIDR Blocks and Gateway Addresses
  Destination	IP address: 10.0.2.12	N/A

• Table 2 lists the information to be collected for a Linux ECS using IPv6.

  Table 2 Linux ECS using IPv6

  ECS	Primary Network Interface	Extended Network Interface	How to Obtain
  Source	IPv4 address: 10.0.0.102 IPv6 address: 2407:c080:1200:1dd8:859c:e5d5:8b3d:a2d9 IPv6 subnet: 2407:c080:1200:1dd8::/64 IPv6 subnet gateway: 2407:c080:1200:1dd8::1	IPv4 address: 10.0.1.191 IPv6 address: 2407:c080:1200:1a9c:7cc0:63b5:8e65:4dd8 IPv6 subnet: 2407:c080:1200:1a9c::/64 IPv6 subnet gateway: 2407:c080:1200:1a9c::1	Obtaining ECS Network Interface Addresses Obtaining Subnet CIDR Blocks and Gateway Addresses
  Destination	IPv4 address: 10.0.2.3 IPv6 address: 2407:c080:1200:1dd9:16a7:fe7a:8f71:7044	N/A

• Table 3 lists the information to be collected for a Windows ECS using IPv4.

  Table 3 Windows ECS using IPv4

  ECS	Primary Network Interface	Extended Network Interface	How to Obtain
  Source	IP address: 10.0.0.59 Subnet gateway: 10.0.0.1	IP address: 10.0.1.104 Subnet gateway: 10.0.1.1	Obtaining ECS Network Interface Addresses Obtaining Subnet CIDR Blocks and Gateway Addresses
  Destination	IP address: 10.0.2.12	N/A

• Table 4 lists the information to be collected for a Windows ECS using IPv6.

  Table 4 Windows ECS using IPv6

  ECS	Primary Network Interface	Extended Network Interface	How to Obtain
  Source	IP address: 2407:c080:802:aba:6788:fb94:d71f:8deb	IP address: 2407:c080:802:be6:71c8:42e0:d44e:eeb4	Obtaining ECS Network Interface Addresses
  Destination	IP address: 2407:c080:802:be7:c2e6:d99c:b685:c6c8	N/A

The above information is only for your reference.

Obtaining ECS Network Interface Addresses

1. Log in to the management console.

2. Click in the upper left corner and select the desired region and project.

3. Click Service List and choose Compute > Elastic Cloud Server.
4. In the ECS list, click the target ECS name.

   The Summary tab page of the ECS is displayed.

5. In the NICs area, view the IP addresses of the primary and extended network interfaces.

   You can view the IPv4 and IPv6 addresses of network interfaces.

   Figure 1 IPv4 and IPv6 addresses of network interfaces
   

Obtaining Subnet CIDR Blocks and Gateway Addresses

1. Log in to the management console.

2. Click in the upper left corner and select the desired region and project.

3. Click Service List and choose Compute > Elastic Cloud Server.
4. In the ECS list, click the target ECS name.

   The Summary tab page of the ECS is displayed.

5. In the ECS Information area, click the name of its VPC.

   The Virtual Private Cloud page is displayed.

6. Locate the target VPC and click the number in the Subnets column.

   The Subnets page is displayed.

7. In the subnet list, view the CIDR blocks of the subnets.

   You can view the IPv4 and IPv6 CIDR blocks of subnets.

   Figure 2 IPv4 and IPv6 CIDR blocks of subnets
   
8. In the subnet list, click the subnet name.

   The Summary page is displayed.

9. Click the IP Addresses tab and view the gateway addresses of the subnet.

   You can view the IPv4 and IPv6 addresses of a gateway.

   Figure 3 IPv4 and IPv6 addresses of a gateway