HP VPN Firewall Appliances Network Management Configuration Guide

504
To configure a BGP route reflector:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ipv4-family vpn-instance
vpn-instance-name
Use either method.
3. Configure the router as a route
reflector and specify a peer or
peer group as its client.
peer { group-name | ip-address }
reflect-client
Not configured by default.
4. Enable route reflection
between clients.
reflect between-clients
Optional.
Enabled by default.
5. Configure the cluster ID of the
route reflector.
reflector cluster-id cluster-id
Optional.
By default, a route reflector uses its
router ID as the cluster ID.
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.
1. 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:
a. Enable BGP and specify the AS number of the router. For more information, see "Enabling
BGP."
b. Specify the confederation ID. From an outsider's perspective, the sub-ASs of the confederatio
n
is a single AS, which is identified by the confederation ID.
c. 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:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Configure a confederation ID.
confederation id as-number Not configured by default.
4. Specify peering sub-ASs in the
confederation.
confederation peer-as
as-number-list
Not configured by default.