One OSPF process can belong to only one VPN instance but one VPN instance can run several
OSPF processes.
The Multi-VPN-Instance CE can be considered as a networking solution that isolates services
by isolating routes. Before configuring a multi-VPN-instance CE, you need to disable routing
loop detection.
Pre-configuration Tasks
Before configuring a multi-VPN-instance CE, complete the following tasks:
l 3.3 Configuring a VPN Instance on the multi-instance CE, and the PE that is accessed by
it (each service with a VPN instance)
l Configuring the link layer protocol and network layer protocol for LAN interfaces and
connecting the LAN to the multi-instance CE (each service using an interface to access the
multi-instance CE)
l Binding related VPN instances to the interfaces of the multi-instance CE and PE interfaces
through which the PE accesses the multi-instance and configuring IP addresses for those
interfaces
Data Preparation
To configure a multi-VPN-instance CE, you need the following data.
No.
Data
1 Names of the VPN instances corresponding with the OSPF processes used by each
service
2 OSPF process number and Router ID used by each service
3 Routes advertised by each OSPF process
3.10.2 Configuring the OSPF Multi-Instance on the PE
Different services use different OSPF process IDs.
Context
Do as follows on the PE that is accessed by the multi-instance CE:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ospf process-id [ router-id router-id ] vpn-instance vpn-instance-name
The OSPF multi-instance is configured.
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
142
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