H3C S7500 Series Ethernet Switches Command Manual

Command Manual – Routing Protocol
H3C S7500 Series Ethernet Switches Chapter 4 Integrated IS-IS Configuration Commands
4-15
z Use the import-route bgp allow-ibgp command with care, because it
redistributes IBGP routes without keeping the AS_PATH attribute, which may lead
to routing loops between ASs.
z It is recommended to configure parameters such as type, cost and tag for
redistributed routes with one command line because reconfiguring the command
overwrites the previous configuration.
 Note:
Use the import-route bgp allow-ibgp command with care!
Related commands: import-route isis level-2 into level-1.
Examples
# Import a static route with the cost of 15.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] isis
[H3C-isis] import-route static cost 15
4.1.16 import-route isis level-2 into level-1
Syntax
import-route isis level-2 into level-1 [ acl acl-number ]
undo import-route isis level-2 into level-1
View
IS-IS view
Parameters
acl-number: ACL number in the range of 2,000 to 3,999. It can be either basic ACLs or
advanced ACLs.
Description
Use the import-route isis level-2 into level-1 command to import the routing
information of Level-2 area to Level-1 area.
Use the undo import-route isis level-2 into level-1 command to disable this function.
By using the filter policy to filter the routes during the route penetration from Level-2 to
Level-1, you can advertise those routes that have passed the filter to Level-1 area.
The routing information in Level-2 area will not be advertised in Level-1 area by default.