Command Reference Guide

96 ● vpn-instance-capability simple 3Com Router 5000 Family and Router 6000 Family
Command Reference
vpn-instance-capability simple
Purpose Use the routing-table limit command to configure a router as
Multi-VPN-Instance CE.
Use the undo routing-table limit command to remove the configuration.
Syntax vpn-instance-capability simple
undo vpn-instance-capability
Parameters None
Example Configure OSPF procedure 100 as Multi-VPN-Instance CE.
[3Com -ospf-100] vpn-instance-capability simple
Restore the OSPF procedure 100 as PE.
[3Com -ospf-100] undo vpn-instance-capability
View This command can be used in the following views:
■ OSPF Protocol view
Description OSPF multi-VPN-instance is often run at a PE router. Therefore, the CE router, on
which OSPF multi-VPN-instance runs, is called Multi-VPN-Instance CE. Though they
both support multi-VPN-instance, Multi-VPN-Instance CE does not necessarily support
BGP/OSPF interoperability.
When OSPF processes are bound to VPN instances, OSPF will use the PE router as the
default router. This command will remove the default setting and change a router into
Multi-VPN-Instance CE. Then OSPF processes will set up all peers again. DN bits and
route-tag will not be check in routing calculation. To prevent route loss, loop test
function is disabled on PE routes. MGP/OSPF interoperability is also disabled to save
system resources.
After the display ospf brief command is executed successfully, the system
prompts the information: “Multi-VPN-Instance enable on CE router.”
CAUTION: The OSPF processes set up all peers again after this command is executed.