3Com MSR 50 Series Configuration Manual page 1486

1486 C 79: MPLS L3VPN C
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ONFIGURATION
If you start multiple OSPF processes on a router, you must specify different router
IDs for different OSPF processes. Otherwise, multiple OSPF processes may use the
same router ID, making OSPF neighbors unable to identify those OSPF processes.
Follow these steps to configure OSPF between PE and CE:
To do...
Enter system view
Create an OSPF instance
between PE and CE and enter
OSPF view
Configure the OSPF domain
ID
Perform the configurations on PEs. Only conventional OSPF is required on CEs.
■
After a VPN instance is deleted, all related OSPF processes are deleted at the
■
same time.
An OSPF process can be configured with only one domain ID. Domain IDs of
different OSPF processes are independent of each other.
All OSPF processes of a VPN must be configured with the same domain ID for
routes to be correctly advertised, while OSPF processes on PEs in different VPNs
can be configured with domain IDs as desired.
The domain ID of an OSPF process is included in the routes generated by the
process. When an OSPF route is injected into BGP, the OSPF domain ID is included
in the BGP VPN route and delivered as a BGP extended community attribute.
After configuring an OSPF instance, you must start OSPF by using the same
■
method for starting a common OSPF process.
For description and detailed configuration about OSPF, refer to
■
Configuration" on page
Configuring IS-IS between PE and CE
An IS-IS process belongs to only one VPN instance. If you run a IS-IS process
without binding it to a VPN instance, the process is considered a public network
process.
Follow these steps to configure IS-IS between PE and CE:
To do...
Enter system view
Create an IS-IS instance
between PE and CE and enter
IS-IS view
After configuring an IS-IS instance, you must start IS-IS by using the same
■
method for starting a common IS-IS process.
Use the command...
system-view
ospf [ process-id ] [ router-id
router-id ] [ vpn-instance
vpn-instance-name ]
domain-id domain-id [ secondary ]
917.
Use the command...
system-view
isis [ process-id ] vpn-instance
vpn-instance-name
Remarks
-
Required
Optional
0 by default
"OSPF
Remarks
-
Required