Configuring A Bgp Confederation - HP MSR Series Configuration Manual

Step
3. Configure the router as a route
reflector and specify a peer or
peer group as its client.
4. Enable route reflection
between clients.
5. Configure the cluster ID of the
route reflector.

Configuring a BGP confederation

Configuring a BGP confederation is another way for reducing IBGP connections in an AS.
A confederation contains sub ASs. In each sub AS, IBGP peers are fully meshed. Between sub ASs, EBGP
connections are established.
If routers not compliant with RFC 3065 exist in the confederation, use the confederation nonstandard
command to make the local router compatible with these routers.
Configuring a BGP confederation
After you split an AS into multiple sub ASs, you can configure a router in a sub AS in the following way:
1. Enable BGP and specify the AS number of the router. For more information, see
2. Specify the confederation ID. From an outsider's perspective, the sub ASs of the confederation is
a single AS, which is identified by the confederation ID.
3. If the router needs to establish EBGP connections to other sub ASs, you must specify the peering
sub ASs in the confederation.
A confederation contains a maximum of 32 sub ASs. The AS number of a sub AS is effective only in the
confederation.
To configure a BGP confederation:
Step
1. Enter system view.
2. Enter BGP view.
Command
peer { group-name | ip-address }
reflect-client
reflect between-clients
reflector cluster-id cluster-id
Command
system-view
bgp as-number
210
Remarks
Not configured by default.
The peer reflect-client command
can be configured in both BGP
view and BGP-VPNv4 subaddress
family view. In BGP view, the
command enables the router to
reflect routes of the public network;
in BGP-VPNv4 subaddress family
view, the command enables the
router to reflect routes of the private
network. (You can enter
BGP-VPNv4 subaddress family
view by executing the ipv4-family
vpnv4 command in BGP view. For
more information about the
ipv4-family vpnv4 command, see
MPLS Command Reference.)
Optional.
Enabled by default.
Optional.
By default, a route reflector uses its
router ID as the cluster ID.
"Enabling
Remarks
N/A
N/A
BGP."