Configuring Route Reflector - Cisco Nexus 7000 Series Configuration Manual

Configuring Advanced BGP
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .
To configure a BGP confederation identifier, use the following command in router configuration mode:
Command
confederation identifier as-number
Example:
switch(config-router)# confederation
identifier 4000
To configure the autonomous systems that belong to the AS confederation, use the following command
in router configuration mode:
Command
bgp confederation peers as-number
[ as-number2... ]
Example:
switch(config-router)# bgp confederation
peers 5 33 44

Configuring Route Reflector

You can configure iBGP peers as route reflector clients to the local BGP speaker, which acts as the route
reflector. Together, a route reflector and its clients form a cluster. A cluster of clients usually has a single
route reflector. In such instances, the cluster is identified by the router ID of the route reflector. To
increase redundancy and avoid a single point of failure in the network, you can configure a cluster with
more than one route reflector. You must configure all route reflectors in the cluster with the same 4-byte
cluster ID so that a route reflector can recognize updates from route reflectors in the same cluster.
BEFORE YOU BEGIN
Ensure that you have enabled the BGP feature (see the
page
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
8.
9.
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
11-26
10-10).
config t
router bgp as-number
cluster-id cluster-id
address-family {ipv4 | ipv6} {unicast | multicast}
client-to-client reflection
exit
neighbor ip-address remote-as as-number
address-family {ipv4 | ipv6} {unicast | multicast}
route-reflector-client
Chapter 11
Purpose
Configures a confederation identifier for an AS
confederation. This command triggers an
automatic notification and session reset for the
BGP neighbor sessions.
Purpose
Specifies a list of autonomous systems that belong
to the confederation. This command triggers an
automatic notification and session reset for the
BGP neighbor sessions.
"Enabling the BGP Feature" section on
Configuring Advanced BGP
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