H3C Technologies H3C S10500 Series Switches - Manual (Page 26)

15
NOTE:
After you configure an IS-IS process for a VPN instance, you must enable the IS-IS process. For more
information about IS-IS, see
Layer 3—IP Routing Configuration Guide.
Configuring iBGP
To use iBGP for route exchange between an MCE and a PE or the egress router of a site, configure the
MCE and the PE or the egress router of the site as iBGP peers.
If the MCE is connected with multiple sites in the same VPN, configure the MCE and the egress routers
of the sites as a cluster and configure the MCE as the route reflector of the cluster.
Follow these steps to configure the MCE to use iBGP for route exchange with a PE or a site:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Enter BGP-VPN instance view
ipv4-family vpn-instance
vpn-instance-name
Required
Configure the PE or the egress
router of the site as the iBGP peer
of the VPN
peer { group-name | ip-address }
as-number as-number
Required
Configure the egress router of the
site as a client of the route reflector peer { group-name | ip-address }
reflect-client
Optional
By default, no route reflector or
client is configured.
Enable route reflection between
clients
reflect between-clients
Optional
Enabled by default.
If the clients are fully meshed, you
do not need to enable route
reflection.
Specify a cluster ID for the route
reflector
reflector cluster-id cluster-id
Optional
By default, each RR in a cluster uses
its own router ID as the cluster ID.
If more than one RR exists in a
cluster, use this command to
configure the same cluster ID for all
RRs in the cluster to avoid routing
loops.
Configure the filtering policy for
routes to be advertised
filter-policy { acl-number |
ip-prefix ip-prefix-name } export
[ direct | isis process-id | ospf
process-id | rip process-id | static ]
Optional
By default, routes to be advertised
are not filtered.
Configure the filtering policy for
routes received filter-policy { acl-number |
ip-prefix ip-prefix-name } import
Optional
By default, routes received are not
filtered.