D-Link DXS-3600-32S CLI Guide - Page 81
bgp confederation identifier, bgp confederation peers
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DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide 7-14 bgp confederation identifier This command is used to specify the BGP confederation identifier. Use the no form of this command to remove the confederation identifier. bgp confederation identifier AS-NUMBER no bgp confederation identifier Parameters AS-NUMBER Specifies the Autonomous System number, used to specify the BGP confederation. This value must be between 1 and 4294967295. The AS TRANS value is 23456. Default Command Mode Command Default Level Usage Guideline None. Router Configuration Mode. Level: 8. (EI Mode Only Command) A confederation can be used to reduce the internal BGP (iBGP) mesh by dividing a large single AS into multiple subs-ASs. External peers interact with the confederation as if it is a single AS. Each subs-AS is fully meshed within itself and it has connections to other sub-ASs within the confederation. The next-hop, Multi Exit Discriminator (MED), and local preference information is preserved throughout the confederation, allowing users to retain a single Interior Gateway Protocol (IGP) for all the autonomous systems. Use the show ip bgp confederation command to verify your settings. Example This example shows how to create a confederation in which the AS number is 20. DXS-3600-32S#configure terminal DXS-3600-32S(config)#router bgp 100 DXS-3600-32S(config-router)#bgp confederation identifier 20 DXS-3600-32S(config-router)# 7-15 bgp confederation peers This command is used to add BGP confederation peers. Use the no form of this command to delete the confederation peers. bgp confederation peers ASPATH-LIST no bgp confederation peers ASPATH-LIST Parameters ASPATH-LIST Specifies one or multiple AS number partitions, separated by a comma. This value must be between 1 and 4294967295, however, for the AS TRANS, this value must be 23456. This parameter specifies Autonomous System numbers for BGP peers that will belong to the confederation. Default Command Mode Command Default Level None. Router Configuration Mode. Level: 8. (EI Mode Only Command) 73
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