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BGP and BGP4+ Commands
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
3.22 AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 C613-50032-01 REV D
bgp confederation peers (BGP and BGP4+)
This command configures the Autonomous Systems (AS) that belong to the same
confederation as the current switch.
A confederation allows an AS to be divided into several sub-ASs. The overall AS is given a
confederation identifier. External routers view only the whole confederation as one AS,
whose AS number is the confederation identifier. Each sub-AS is fully meshed within itself
and is visible internally to the confederation.
Use the bgp confederation peer command to define the list of AS numbers of the sub-ASs
in the confederation containing the current switch.
The no variant of this command removes an autonomous system from the confederation.
Syntax bgp confederation peers <1-4294967295>
no bgp confederation peers <1-4294967295>
Mode
Router Configuration
Usage In the following configuration of Router 1 the neighbor 172.210.30.2 and
172.210.20.1 have iBGP connection within AS 100. The neighbor 173.213.30.1
has an BGP connection, but it is within AS 200, which is part of the same confederation.
The neighbor 6.6.6.6 has an eBGP connection to external AS 500.
In the configuration of Router 2, neighbor 5.5.5.4 has an eBGP connection to
confederation 300. Router2 does not know about the ASs 100 and 200, it only knows
about confederation 300.
Router 1
Router 2
Parameter Description
<
1-4294967295> AS numbers of eBGP peers that are under same confederation
but in a different sub-AS.
awplus(config)#
router bgp 100
awplus(config-router)#
bgp confederation identifier 300
awplus(config-router)#
bgp confederation peers 200
awplus(config-router)#
neighbor 172.210.30.2 remote-as 100
awplus(config-router)#
neighbor 172.210.20.1 remote-as 100
awplus(config-router)#
neighbor 173.213.30.1 remote-as 200
awplus(config-router)#
neighbor 6.6.6.6 remote-as 300
awplus(config)#
router bgp 500
awplus(config-router)#
neighbor 5.5.5.4 remote-as 300