Configure IS-IS Basic Function
Configuration Condition
Before using the IS-IS protocol, first complete the following tasks:
- Configure the link layer protocol to ensure the normal communication at the link layer.
- Configure the network layer IP address of the interface to enable the neighboring nodes to be reachable at the network layer.
Enable IS-IS Protocol
Multiple IS-IS processes can operate at the same time in the system. Each process is identified by different process names.
Table 9-2 Enable the IS-IS protocol
Step
|
Command
|
Description
|
Enter the global configuration mode
|
configure terminal
|
-
|
Create the IS-IS process and enter the IS-IS configuration mode
|
router isis [area-tag ]
|
Mandatory
By default, the IS-IS process does not operate in the system. The process name is area-tag.
|
Configure the network entity title for the IS-IS
|
net entry-title
|
Mandatory
By default, the network entity title is not configured for the IS-IS.
|
Return to the global configuration mode
|
exit
|
-
|
Enter the interface configuration mode
|
interface interface-name
|
-
|
Enable the IS-IS protocol on the interface
|
ip router isis [area-tag ]
|
Mandatory
By default, the IS-IS protocol is not enabled on the interface.
|
![note](/storage/images/Document/Maipu/note-icon.jpg)
-
The IS-IS protocol cannot operate without the network entity title.
Configure IS-IS VRF Attribute
Multiple IS-IS processes can exist in the same VRF, but only one IS-IS process with Level-2 attribute in the VRF.
Table 9-3Configure the IS-IS VRF attribute
Step
|
Command
|
Description
|
Enter the global configuration mode
|
configure terminal
|
-
|
Enter the IS-IS configuration mode
|
router isis [ area-tag ]
|
-
|
Enter the VRF attribute for the IS-IS
|
vrf vrf-name
|
Optional
By default, the IS-IS process locates at the global VRF.
|