Service Limits

Last updated: 2020-09-27 17:29:13

    Resource Limits

    Resource Limit Higher quota allowed
    Connections per user 10 Yes
    Dedicated tunnels per connection 5 Yes
    Direct Connect gateway per VPC 1 No
    Local IP translations per Direct Connect gateway 100 Yes
    Peer IP translations per Direct Connect gateway 100 Yes
    IPs for local source IP port translation per Direct Connect gateway 20 Yes
    Local destination IP port translations per Direct Connect gateway 100 Yes
    Number of static routes per dedicated tunnel 20 No
    Number of BGP routes per dedicated tunnel 100 No

    Access Limits

    Direct Connect

    • When a Direct Connect gateway is created, the content of IP translation and IP port translation are left empty by default. In this case, neither of them takes effect.

    • Dedicated tunnels support BPG routing and static routing.

    • Note the following limits for routing distribution:
      To ensure the fine-grained scheduling capability of your network, do not publish the following routes:
      9.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 100.64.0.0/10, 131.87.0.0/16, 172.16.0.0/12, 192.168.0.0/16.

      Note:

      If a large IP range route is published, the direct connect gateway will directly reject it.

      You can split the above routes as follows for distribution:

      • 9.0.0.0/8
        should be split into 9.0.0.0/9 + 9.128.0.0/9.
      • 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.
      • 131.87.0.0/16
        should be split into 131.87.0.0/17 + 131.87.128.0/17.
      • 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.

    IP translation

    • IP address pools cannot fall within the CIDR range of the VPC in which the Direct Connect gateway resides.
    • ACL rules for multiple IP address pools should not overlap. Otherwise, this will cause network address translation conflicts.
    • IP address pools cannot not contain overlapping IP addresses.
    • IP address pools only support single IP or IP ranges. /24 IP ranges should be consistent. For example, 192.168.0.1 - 192.168.0.6 is supported, but 192.168.0.1 - 192.168.1.2 is not.
    • Address pools should not contain the broadcast address (255.255.255.255), Class D addresses (224.0.0.0 - 239.255.255.255), or Class E addresses (240.0.0.0 - 255.255.255.254).
    • Local source IP port translation supports up to 100 IP address pools, each supporting up to 20 ACL rules. Your can submit a ticket to request quota increases if needed.
    • To switch from IP translation to IP port translation, remove the original IP translation rules and refresh the page to edit the IP port translation rules.

    IP port translation

    • The original IP must fall within the CIDR range of the VPC in which the Direct Connect gateway resides.
    • The original IP port must be unique. In other words, an IP port in a VPC can only be mapped to one IP port.
    • The mapped IP port cannot fall within the CIDR range of the VPC.
    • The mapped IP port must be unique. In other words, multiple IP ports in a VPC cannot be mapped to one IP port.
    • Original IPs and mapped IPs do not support the broadcast address (255.255.255.255), Class D addresses (224.0.0.0 - 239.255.255.255), and Class E addresses (240.0.0.0 - 255.255.255.254).
    • Local destination IP port translation supports up to 100 IP port mappings. You can submit a ticket to request quota increases if needed.
    • If both IP translation and IP port translation are configured, IP translation takes priority when both are hit.

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