Command Reference Guide

74 ● ospf vpn instance 3Com Router 5000 Family and Router 6000 Family
Command Reference
To enable an OSPF process belonging to a public network without router ID, the
following conditions should be satisfied:
■ RM is configured with router ID.
■ There is an interface configured with an IP address.
If you enable an OSPF process without specify router ID, and the process is to be
bound to a VPN instance, the VPN instance should have an interface that is
configured with an IP address.
If you want to bind a process to a VPN instance, you must specify the VPN instance
name.
One VPN instance may include several processes. For example, for VPN instance 1 to
configure the commands
ospf 1 vpn-instance vpn1, ospf 2
vpn-instance vpn1
, and ospf 3 vpn-instance vpn1. Accordingly, VPN
instance 1 will include processes 1, 2, and 3.
One process belongs to one instance only however. If you have configured ospf 1
vpn-instance vpn1, you cannot configure ospf 1 vpn-instance vpn2.
Otherwise, the system prompts: “Wrong configuration. Process 1 has been bound to
vpn-instance vpn-instance 1”. If you configure
ospf 1 first and then ospf 1
vpn-instance
vpn1, the system prompts: “Wrong configuration. Process 1 has
been running in public domain”.
If you configure ospf 1 vpn-instance vpn1 first and then ospf 1, the
system enters ospf 1 vpn-instance vpn1 mode. That is, the commands
ospf 1 and
ospf 1 vpn-instance vpn1 are equivalent.
When an OSPF process is bound to a VPN instance, the default OSPF router is PE
router. After executing the
display ospf process-id brief command, you
will view the information: “PE router, connected to VPN backbone”.
CAUTION:
■ A router can run no more than 1024 OSPF processes, with up to 10 processes
enabled in each VPN instance.
■ If you bind an OSPF process to a nonexistent VPN instance, the configuration for
the command fails. The system prompts: “Specified vpn instance not configured”.
■ When a VPN instance is deleted, all the related OSPF processes will be deleted. For
example, VPN instance vpn1 includes OSPF processes 1, 2 and 3. If VPN instance
vpn1 is deleted, the OSPF processes 1, 2 and 3 will all be deleted at the same time.
Related Command network