Configuring A Bgp Confederation - HPE 5800 Series Configuration Manual

Step
Enter system view.
1.
Enter BGP view or
2.
BGP-VPN instance view.
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.
Command
system-view
•
Enter BGP view:
bgp as-number
•
Enter BGP-VPN instance
view:
a. bgp as-number
b. ipv4-family
vpn-instance
vpn-instance-name
peer { group-name | ip-address }
reflect-client
reflect between-clients
reflector cluster-id cluster-id
212
Remarks
N/A
Use either approach.
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