H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 4 IS-IS Configuration
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 Note:
The level-1 and level-2 keywords in the isis authentication-mode command are only
supported on a VLAN interface of a switch, and the interface must be configured with
the isis enable command first.
4.5.9 Configuring LSDB Overload Tag
When the overload tag is set on a router, other routers will not send packets to the
router except for the packets destined to the network directly connected to the router.
The overload tag can be used for troubleshooting as well. You can temporarily isolate a
router from the IS-IS network by setting the overload tag.
Follow these steps to configure the LSDB overload tag:
To do… Use the command… Remarks
Enter system view
system-view
––
Enter IS-IS view isis [ process-id ] ––
Configure the overload
tag
set-overload [ on-startup
start-from-nbr system-id
[ timeout [ nbr-timeout ] ] ] [ allow
{ interlevel | external } * ]
Required
Not configured by
default
4.5.10 Logging the Adjacency Changes
Follow these steps to configure this task:
To do… Use the command… Remarks
Enter system view
system-view
––
Enter IS-IS view isis [ process-id ] ––
Enable to log the
adjacency changes
log-peer-change
Required
Enabled by default
 Note:
With this feature enabled, the state information of the adjacency is displayed on the
configuration terminal.