Switch 7700 Command reference Guide, v2.0

180 CHAPTER 5: USING ROUTING PROTOCOL COMMANDS
is-level Syntax
is-level { level-1 | level-1-2 | level-2 }
undo is-level
View
IS-IS view
Parameter
level-1: Configure the router to operate at Level-1, only calculate the intra-area
routes and maintain the LSDB of L1.
level-1-2: Configure the router to operate at Level-2, calculate both the L1 and
L2 routes and maintain the LSDB of L1 and L2.
level-2: Configure the router to operate at Level-2, only switch L2 LSP and
calculate the L2 routes and maintain the LSDB of L2.
Description
■ Use the is-level command to configure the IS-IS level.
■ 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 advised 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 advised to set all the routers to Level-2 for convenient future
extension, when applying them to IP network.
Related command: isis circuit-level.
Example
Set the current router to operate at Level-1.
[SW7700]isis
[SW7700-isis]is-level level-1
log-peer-change Syntax
log-peer-change
undo log-peer-change
View
IS-IS view
Parameter
None
Description
■ Use the log-peer-change command to log the peer changes.