Last updated: 2021-01-29 15:52:51

    Use Limits

    • The default route table of a VPC cannot be deleted.

    • After a VPC is created, its route table will be automatically provided with a default route, indicating that all resources in this VPC are interconnected through the private network. This routing policy cannot be modified or deleted.

      DestinationNext hop typeNext hop
      LocalLocalLocal
    • Dynamic routing protocols such as BGP and OSPF are not supported.

    • The support for ECMP varies with routes, as shown in the following table.

      Next hop typeForming ECMP with the same typeForming ECMP with another typeMaximum ECMP
      NAT GatewaySupportedSupported, with public IP of CVMUp to 8 for the same type, and 1 for a different type
      Inter-region peering connectionNot supportedNot supportedN/A
      Cross-region peering connectionNot supportedSupported, with CCNUp to 1 for a different type
      Direct connect gatewayNot supportedSupported, with CCNUp to 1 for a different type
      HAVIPNot supportedNot supportedN/A
      VPN gatewayNot supportedNot supportedN/A
      Public IP of CVMNot supportedSupported, with CVM or NAT GatewayUp to 1 for a different type
      CVMSupportedSupported, with public IP of CVMUp to 8 for the same type, and 1 for a different type
      CCNNot supportedSupported, with direct connect gateway or cross-region peering connectionUp to 1 for a different type

      Note:

      • Equal Cost Multi-path (ECMP) means that multiple equal-cost routes to a single destination exist.
      • To the same destination, the public IP of CVM has a higher priority than that of NAT Gateway.
      • Direct connect gateway and CCN can form ECMP. However, the route’s health status will not be checked, and unhealthy routes will not be automatically restricted.
      • Multiple NAT Gateway routes can form ECMP. However, the route’s health status will not be checked, and unhealthy routes will not be automatically restricted.
      • Multiple CVM routes can form ECMP. However, the route’s health status will not be checked, and unhealthy routes will not be automatically restricted.

    Quota Limits

    Resource Limit
    Number of route tables per VPC 10
    Number of route tables associated with each subnet 1
    Number of routing policies per route table 50

    Was this page helpful?

    Was this page helpful?

    • Not at all
    • Not very helpful
    • Somewhat helpful
    • Very helpful
    • Extremely helpful
    Send Feedback
    Help