3Com S7906E - Switch, Configuration Manual

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2-10
To do… Use the command… Remarks
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.
Configure to Use IS-IS between a MCE and a PE
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:
To do… Use the command… Remarks
Enter system view 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.