Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 4 Integrated IS-IS Configuration Commands
3Com Corporation
4-14
4.1.16 import-route
Syntax
import-route protocol [ allow-ibgp ] [ cost value ] [ type { external | internal } ]
[ level-1 ] [ level-1-2 ] [ level-2 ] [ route-policy route-policy-name ]
undo import-route protocol [ cost value ] [ type { external | internal } ] [ level-1 ]
[ level-1-2 ] [ level-2 ] [ route-policy route-policy-name ]
View
IS-IS view
Parameter
protocol: Specifies source routing protocols which can be redistributed, including direct,
bgp, ospf, ospf-nssa , ospf-ase, rip and static at present.
allow-ibgp: Optional when the protocol argument is set to BGP. Whereas the
import-route bgp command redistributes only EBGP routes, the import-route bgp
allow-ibgp command redistributes IBGP routes in addition and as such, must be used
with cautions.
cost value: Specifies the route cost of the redistributed route, ranging from 0 to 63.
level-1: Redistributes the route into Level-1 routing table.
level-2: Redistributes the route into Level-2 routing table.
level-1-2: Redistributes the route into Level-1-2 routing table.
If the level for redistributing the route is not specified in the command, it defaults to
redistribute the routes into Level-1 and Level-2, i.e. Level-1-2 routing table.
route-policy route-policy-name: Redistributes only the routes matching the specified
route-policy.
Description
Use the import-route command to configure IS-IS to filter the redistributed routes.
Use the undo import-route command to configure IS-IS not to redistribute the routing
information of other protocols.
By default, IS-IS does not redistribute routing information from any other protocols.
For IS-IS, the routes discovered by other routing protocols are processed as the routes
outside the routing domain. When redistributing the routes of other protocols, you can
specify the default cost for them. If OSPF routes are redistributed, you can also specify
the cost type for them.
When IS-IS redistributes routes, you can specify to redistribute the routes to Level-1,
Level-2 or Level-1-2. If you do not specify the level, the system will redistribute the
routes to Level-2 routing table by default.