configure bgp confederation-id
Specifies a BGP routing confederation ID.
|confederation-id||Specifies a routing confederation identifier, which is a 4-byte AS number in the range of 1 to 4,294,967,295.|
IBGP requires that networks use a fully-meshed router configuration. This requirement does not scale well, especially when BGP is used as an interior gateway protocol. One way to reduce the size of a fully-meshed AS is to divide the AS into multiple sub-autonomous systems and group them into a routing confederation. Within the confederation, each sub-AS must be fully-meshed. The confederation is advertised to other networks as a single AS.
The confederation ID is a 4-byte AS number in either the ASPLAIN or the ASDOT format as described in RFC 5396, Textual Representation of Autonomous System (AS) Numbers.
BGP must be disabled before the confederation ID can be changed.
Use a confederation ID of 0 to indicate no confederation. You cannot unconfigure the confederation ID while confederation peers are configured. You must delete the confederation peers before you unconfigure the confederation ID.
The following command specifies a BGP routing confederation ID using the ASPLAIN 4-byte AS number format:
configure bgp confederation-id 65551
The following command specifies a BGP routing confederation ID using the ASDOT 4-byte AS number format:
configure bgp confederation-id 1.15
This command was first available in ExtremeXOS 10.1.
This command required a specific license in ExtremeXOS 11.1.
Support for 4-byte AS numbers was first available in ExtremeXOS 12.4.
This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the BGP feature, see the ExtremeXOS 32.2 Feature License Requirements document.