3com 8807 Reference Guide

C

HAPTER

 26: I

NTEGRATED

 IS-IS C

ONFIGURATION

 C

OMMANDS

is-level { level-1 | level-1-2 | level-2 }

IS-IS view

level-1: Configures the router to operate at Level-1, only calculate the intra-area 
routes and maintain the LSDB of L1.

level-1-2: Configures the router to operate at Level-2, calculate both the L1 and 
L2 routes and maintain the LSDB of L1 and L2.

level-2: Configures the router to operate at Level-2, only switch L2 LSP and 
calculate the L2 routes and maintain the LSDB of L2.

Use the is-level command to configure the level of the IS-IS router.

Use the undo is-level command to restore the default value.

By default, the value is level-1-2.

We recommend setting the system Level, when you configure IS-IS.

If there is only one area, you are recommended to set the level of all the routers as 
Level-1 or Level-2, because it is not necessary for all the routers to maintain two 
identical databases. You are recommended to set all the routers to Level-2 for 
convenient future extension, when applying them to IP network.

Related command: isis circuit-level.

# Set the current router to operate at Level-1.

[SW8800] isis

 

[3Com-isis] is-level level-1 

IS-IS view

None