H3C Technologies H3C S7500E Series Switches - Manual (Page 31)

1-19
Configure to Use IS-IS between a MCE and a PE
When configuring to use IS-IS between a MCE and a PE, you need to configure the IS-IS processes
to be bound to VPN instances and manually import the VPN routes in the site maintained by the
MCE device to the routing table of the PE.
In IS-IS, routes discovered by other routing protocols are external routes. While importing routes of
other protocols, you can specify the default cost value for the imported routes as well. You can also
apply filter policies for imported routes.
Follow these steps to configure IS-IS to import external routes:
To do… Use the command… Remarks
Enter system view system-view —
Enable IS-IS for a VPN
instance and enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
—
Import routes of other
protocols
import-route { isis [ process-id ] | ospf
[ process-id ] | rip [ process-id ] | bgp
[ allow-ibgp ] | direct | static } [ cost
cost | cost-type { external | internal } |
[ level-1 | level-1-2 | level-2 ] |
route-policy route-policy-name | tag
tag ] *
Required
By default, IS-IS does not import
routes of other protocols.
If none of the level-1, level-2,
and level-3 keywords is
specified, the external routes are
imported to level-2 routing table.
Apply a filter policy for
imported routes
filter-policy { acl-number | ip-prefix
ip-prefix-name | route-policy
route-policy-name } export [ isis
process-id | ospf process-id | rip
process-id | bgp | direct | static ]
Optional
By default, no filter policy is
applied.
Configure to Use EBGP between a MCE and a PE
To use EBGP to exchange routing information between a MCE and a PE, you need to configure the
peer end as a peer in the BGP-VPNs on both ends, import VPN routes in the site to the MCE, and
then advertise these routes to the PE.
Follow these steps to configure EBGP between a MCE and a PE:
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 as a VPN
peer
peer { group-name | ip-address }
as-number as-number
Required