Configuring A Bgp Confederation - HPE FlexNetwork HSR6800 Configuration Manual

Step
Configure the router as a
3.
route reflector and specify a
peer or peer group as its
client.
Enable route reflection
4.
between clients.
Configure the cluster ID of
5.
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:
Enable BGP and specify the AS number of the router. For more information, see
1.
BGP."
Specify the confederation ID. From an outsider's perspective, the sub ASs of the confederation
2.
is a single AS, which is identified by the confederation ID.
If the router needs to establish EBGP connections to other sub ASs, you must specify the
3.
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
Enter system view.
1.
Enter BGP view.
2.
Command
peer { group-name | ip-address }
reflect-client
reflect between-clients
reflector cluster-id cluster-id
Command
system-view
bgp as-number
229
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