3com S7906E Instruccion De Instalación

 

2-5 

Enter system view 

— 

Enable OSPF for a 
VPN instance (this 
operation also leads 
you to OSPF view) 

ospf [ process-id | 
router-id router-id | 
vpn-instance 
vpn-instance-name ] * 

Required 

This operation is performed on the MCE 
device. As for the corresponding 
configuration on the site, you can just 
enable OSPF as usual.  

Enable 
multi-VPN-instance CE 
for the OSPF process 

Required 

Disabled by default 

Redistribute routes 
from the remote site 
advertised by the PE 

import-route protocol 
[ process-id | allow-ibgp ] 
[ cost cost | type type | tag 
tag | route-policy 
route-policy-name ] * 

Required 

Not redistributed by default 

Configure the OSPF 
domain ID 

domain-id domain-id 
[ secondary ] 

Optional 

By default, the OSPF domain ID is 0.  

This operation is performed on the MCE 
device. As for the corresponding 
configuration on the site, you can just 
enable OSPF as usual.  

Configure the type 
codes of OSPF 
extended community 
attributes 

ext-community-type 
{ domain-id type-code1 | 
router-id type-code2 | 
route-type type-code3 } 

Optional 

The defaults are as follows: 

0x0005 for Domain ID, 

0x0107 for Router ID, and 

0x0306 for Route Type. 

 

z 

Router IDs of the public network configured in system view do not applies to OSPF processes 

bound to VPN instances. So you need to configure the Router ID after enabling OSPF for a VPN 

instance.  

z 

To make sure routes can be advertised properly, you need to configure the same domain ID for all 

the OSPF processes bound to a VPN.  

z 

After enabling OSPF for a VPN instance, you need also to configure to use OSPF for routing 

information exchange, which is described in the IP Routing Volume.  

 

An IS-IS process can be bound to only one VPN instance. IS-IS processes not bound to any VPN 

instances belong to the public network.  

Follow these steps to configure IS-IS between a MCE and a site: