Tuning And Optimizing Is-Is Network; Configuring A Dis Priority For An Interface - H3C S7500E Series Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches
To do...
Enable IS-IS route
leaking
Note:
If a filter policy is specified, only routes passing it can be advertised into Level-1
area.
You can specify a routing policy in the import-route isis level-2 into level-1
command to filter routes from Level-2 to Level-1. Other routing policies specified for
route reception and redistribution does not affect the route leaking.

4.5 Tuning and Optimizing IS-IS Network

4.5.1 Configuration Prerequisites
Before the configuration, accomplish the following tasks first:
Configure an IP address on each interface, and make sure all nodes are
reachable.
Configure basic IS-IS functions

4.5.2 Configuring a DIS Priority for an Interface

On an IS-IS broadcast network, a router should be selected as the DIS at a specific
level, Level-1 or Level-2. You can specify a DIS priority at a level for an interface. The
bigger the interface's priority value, the more likelihood it becomes the DIS.
Follow these steps to configure a DIS priority for an interface:
Enter system view
Enter interface view
Specify a DIS priority for
the interface
Use the command...
import-route isis level-2 into
level-1 [ filter-policy
{ acl-number | ip-prefix
ip-prefix-name | route-policy
route-policy-name } | tag tag ] *
To do...
system-view
interface interface-type
interface-number
isis dis-priority value [ level-1
| level-2 ]
Use the command...
4-25
Chapter 4 IS-IS Configuration
Remarks
Required
Disabled by default
Remarks
––
––
Optional
64 by default