Service Limits

Last updated: 2020-02-25 22:47:11

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Resource limitations

Resource Limit You can apply for higher quota
Connections / user 10 Yes
Dedicated tunnels / connection 20 Port: 789
Direct Connect gateway/VPC 1 Local IP translations / direct connect gateway
Peer IP translations / direct connect gateway one hundred Yes
Number of IPs for local source IP port translation / direct connect gateway 20 Yes
Local destination IP port translations / direct connect gateway one hundred Yes
Dedicated tunnel static route entries 20 articles No
Dedicated tunnel BGP routing entries 100 articles No

Access Limit

Direct Connect

When a Direct Connect gateway is created, the contents of IP translation and IP port translation are left empty by default. In this case, neither of them takes effect.
Direct Connect tunnels support BPG routing and static routing.

  • Please pay attention to the following restrictions when routing publish:
    To ensure the refined scheduling capability of your network, do not publish the following routes:
    10.0.0.0/8 , 172.16.0.0/12 , 192.168.0.0/16 , 100.64.0.0/10 .
    You can split the above large routes into the following ones for distribution:
  • 10.0.0.0/8
    Should be split into 10.0.0.0/9 + 10.128.0.0/9 .
  • 172.16.0.0/12
    Should be split into 172.16.0.0/13 + 172.24.0.0/13 .
  • 192.168.0.0/16
    Should be split into 192.168.0.0/17 + 192.168.128.0/17 .
  • 100.64.0.0/10
    Should be split into 100.64.0.0/11 + 100.96.0.0/11 .

IP Translation

  • The IP address pool cannot be within the CIDR range of VPC to which the Direct Connect gateway belongs.
  • ACL rules for multiple IP address pools should not overlap. Otherwise, this will cause network address translation conflicts.
  • IP addresses between multiple IP addresses should not overlap.
    IP address pools only support single IP or consecutive IPs, and / 24 IP address range of consecutive IPs should be consistent. For example, 192.168.0.1-192.168.0.6 Is supported, but 192.168.0.1-192.168.1.2 Not.
  • Address pool should not contains broadcast address (255.255.255.255), Class D address (224.0.0.0-239.255.255.255), and Class E address (240.0.0.0-255.255.255.254).
  • Local source IP port translation supports up to 100 IP address pools, and each address pool supports up to 20 ACL rules (if required, you can Submit a ticket Apply for an increase in the quota.
    To switch from IP translation to IP port translation, remove the original IP translation rules and refresh the page to edit IP port translation rules.

IP Port Translation

  • The original IP must be within the CIDR range of VPC to which the Direct Connect gateway belongs.
  • The original IP port should be unique. In other words, the same IP port within the VPC can only be mapped to one IP port.
    The mapped IP port cannot fall within the CIDR range of the VPC.
  • Mapping IP port should be unique. In other words, multiple IP ports in a VPC cannot be mapped to the same IP port.
  • The original IP and mapping IP do not support broadcast addresses 255.255.255.255 , Class D address 224.0.0.0 - 239.255.255.255 , Class E address 240.0.0.0 - 255.255.255.254 .
  • Local's destination IP port translation supports up to 100IP port mappings (if required, you can Submit a ticket Apply for an increase in the quota.
    If both IP translation and IP port translation are configured, IP translation takes priority in case of any conflict.