3Com Router 3031, Command Reference Manual

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Integrated IS-IS Configuration Commands 619
View
IS-IS view
Parameter
■
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-1-2, calculate both the L1
and L2 routes and maintain the LSDB of Level-1 and Level-2.
■
level-2: Configures the router to operate at Level-2, only switch Level-2 LSP and
calculate the Level-2 routes and maintain the LSDB of Level-2.
Description
Using the is-level command, you can configure the IS-IS level. Using the undo
is-level command, you can restore the default setting.
By default, the value is level-1-2.
You are recommended to set the system level when configuring 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.
For the related command, see isis circuit-level.
Example
Set the current router to operate on Level-1.
[3Com] isis
[3Com-isis] is-level level-1
log-peer-change
Syntax
log-peer-change
undo log-peer-change
View
IS-IS view
Parameter
None
Description
Using the log-peer-change command, you can configure to log the IS-IS adjacency
changes. Using the undo log-peer-change command, you can configure not to log
the IS-IS adjacency changes.
By default, IS-IS adjacency changes log is disabled.
After IS-IS adjacency changes log is enabled, the IS-IS adjacency changes will be
output on the configuration terminal until the log is disabled.
Example
Configure to log the IS-IS adjacency changes on the current router.