3Com Switch 8800 Family Configuration Guide

Configuring Integrated IS-IS 347
Perform the following configuration in IS-IS view.
If the level is not specified in the command for importing the route, it defaults to
importing the routes into level-2.
protocol specifies the routing protocol sources that can be imported, which can be
direct, static, rip, bgp, and ospf, etc.
By default, IS-IS does not import routing information from any other protocols.
For more about importing routing information, refer to the "Configuring IP
Routing Policy" part.
Configuring IS-IS Route
Filtering
IS-IS protocol can filter the received and advertised routes according to the access
control list specified by acl-number.
Perform the following configuration in IS-IS view.
Configuring to filter the routes received by IS-IS
Configuring to filter the advertised routes
By default, IS-IS does not filter the route advertised by other routing protocols.
protocol specifies the routing protocol sources for advertising routes, which can be
direct, static, rip, bgp, ospf, ospf-ase, ospf-nssa and so on.
n
■ The filter-policy import command only filters the ISIS routes received from
the neighbors, and routes that cannot pass the filter will not be added to the
routing table. This command takes effect on Level-1-2 routers.
Tab le 314 Import routes of other protocols
Operation Command
Import routes of other
protocols
import-route protocol [ cost value | type { external |
internal } | [ level-1 | level-1-2 | level-2 ] | route-policy
route-policy-name ]*
Cancel importing routes from
other protocols
undo import-route protocol [ cost value | type { external |
internal } | [ level-1 | level-1-2 | level-2 ] | route-policy
route-policy-name ]*
Tab le 315 Configure to filter the received routes
Operation Command
Configure to filter the received routes filter-policy acl-number import
Cancel filtering the received routes undo filter-policy acl-number import
Tab le 316 Configure to filter the advertised routes
Operation Command
Configure to filter the routes advertised by
IS-IS
filter-policy acl-number export [
routing-protocol ]
Configure not to filter the routes advertised
by IS-IS
undo filter-policy acl-number export
[routing-protocol ]