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.

  Destination	Next hop type	Next hop
  Local	Local	Local

• 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 type	Forming ECMP with the same type	Forming ECMP with another type	Maximum ECMP
  NAT Gateway	Supported	Supported, with public IP of CVM	Up to 8 for the same type, and 1 for a different type
  Inter-region peering connection	Not supported	Not supported	N/A
  Cross-region peering connection	Not supported	Supported, with CCN	Up to 1 for a different type
  Direct connect gateway	Not supported	Supported, with CCN	Up to 1 for a different type
  HAVIP	Not supported	Not supported	N/A
  VPN gateway	Not supported	Not supported	N/A
  Public IP of CVM	Not supported	Supported, with CVM or NAT Gateway	Up to 1 for a different type
  CVM	Supported	Supported, with public IP of CVM	Up to 8 for the same type, and 1 for a different type
  CCN	Not supported	Supported, with direct connect gateway or cross-region peering connection	Up 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