C613-50631-01 Rev A Command Reference for IE340 Series 1328
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
BGP AND BGP4+ COMMANDS
BGP
CONFEDERATION PEERS
bgp confederation peers
Overview This command configures the Autonomous Systems (AS) that belong to the same
confederation as the current device.
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 device.
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 notes 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
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
Router 2
awplus(config)# router bgp 500
awplus(config-router)# neighbor 5.5.5.4 remote-as 300
Parameter Description
<1-4294967295> AS numbers of eBGP peers that are under same confederation
but in a different sub-AS.
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