H3C Technologies H3C S10500 Series Switches - Manual (Page 25)

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NOTE:
An OSPF process that is bound with a VPN instance does not use the public network router ID
configured in system view. Therefore, you must configure a router ID when starting the OSPF process. All
OSPF processes for the same VPN must be configured with the same OSPF domain ID to ensure correct
route advertisement.
An OSPF process can belong to only one VPN instance, but one VPN instance can use multiple OSPF
processes to advertise the VPN routes.
After configuring an OSPF instance, you must enable OSPF. The configuration procedure is the same as
the common OSPF configuration. For OSPF configuration details, see
Layer 3—IP Routing Configuration
Guide.
Configuring IS-IS
An IS-IS process belongs to the public network or a single VPN instance. If you create an IS-IS process
without binding it to a VPN instance, the process belongs to the public network.
Follow these steps to configure route exchange through IS-IS:
To do… Use the command… Remarks
Enter system view system-view —
Create an IS-IS process for a VPN
instance and enter IS-IS view isis [ process-id ] vpn-instance
vpn-instance-name
Required
Redistribute routes of the routing
protocol processes connecting the
MCE with the PE and the sites
respectively
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 ] *
Optional
By default, IS-IS does not
redistribute routes of any other
protocol.
If you do not specify the route level
in the command, the command will
redistribute routes to the level-2
routing table by default.
• If the IS-IS process is for an
MCE and a site, the routes to be
redistributed must be from the
routing protocol process used
for advertising the routes of the
VPN between the MCE and PE.
• If the IS-IS process is for an
MCE and a PE, the routes to be
redistributed must be from the
routing protocol process used
for advertising the routes of the
VPN between the MCE and the
sites.
Configure a filtering policy to filter
the redistributed 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
This configuration is used for
connecting the PE.
By default, IS-IS does not filter the
redistributed routes.