3com S7906E 설치 설명서

 

2-10 

Enable OSPF to import 
routes of other protocols 

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

Required 

By default, OSPF does not 
import the routes of other 
protocols. 

Apply a filter policy for 
imported routes 

filter-policy { acl-number | ip-prefix 
ip-prefix-name } export [ protocol 
[ process-id ] ] 

Optional 

By default, no filter policy is 
applied.  

Configure the default 
values of the route 
attributes (including cost, 
limit, tag, and type) for the 
routes imported 

default { cost cost | limit limit | tag 
tag | type type } * 

Optional 

The default route attributes are 
as follows: the cost value is 1, 
the upper limit on the maximum 
number of imported external 
routes is 1,000, the tag value is 
1, and the type is type2.  

 

When configuring to use IS-IS between a MCE and a PE, you need to configure the IS-IS processes to 

be bound to VPN instances and manually import the VPN routes in the site maintained by the MCE 

device to the routing table of the PE.  

In IS-IS, routes discovered by other routing protocols are external routes. While importing routes of 

other protocols, you can specify the default cost value for the imported routes as well. You can also 

apply filter policies for imported routes.  

Follow these steps to configure IS-IS to import external routes: 

Enter system view 

— 

Enable IS-IS for a VPN 
instance and enter IS-IS 
view 

isis [ process-id ] [ vpn-instance 
vpn-instance-name ] 

— 

Import routes of other 
protocols 

import-route { isis [ process-id ] | 
ospf [ process-id ] | rip [ process-id ] 
| bgp [ allow-ibgp ] | direct | static } 
[ cost cost | cost-type { external | 
internal } | [ level-1 | level-1-2 | 
level-2 ] | route-policy 
route-policy-name | tag tag ] * 

Required 

By default, IS-IS does not 
import routes of other 
protocols.  

If none of the level-1, level-2, 
and level-3 keywords is 
specified, the external routes 
are imported to level-2 routing 
table.  

Apply a filter policy for 
imported routes 

filter-policy { acl-number | ip-prefix 
ip-prefix-name | route-policy 
route-policy-name } export [ isis 
process-id | ospf process-id | rip 
process-id | bgp | direct | static ] 

Optional 

By default, no filter policy is 
applied.