Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 288)

260 Multi-Service IronWare Routing Configuration Guide
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Globally configuring IS-IS on a device
NOTE
The isis auth-key command allows the user to configure more 80 characters, but only the first 80
characters are used.
Disabling IS-IS authentication checking on a specified interface
When transitioning from one authentication mode to another, changing the authentication mode
can cause packets to drop because only some of the routers have been reconfigured. During such
a transition, it can be useful to disable IS-IS authentication checking temporarily until all routers
are reconfigured and the network is stable.
You can use the following commands to disable IS-IS authentication checking on a specified
interface.
Brocade(config)# interface ethernet 3/1
Brocade(if-e10000-3/1)# no isis auth-check level-1
Syntax: [no] isis auth-check [ level-1 | level-2 ]
This command enables and disables IS-IS authentication checking. The default is enabled and the
[no] parameter disables authentication checking.
The level-1 parameter specifies that authentication checking is enabled/ disabled for L1 Hello
packets.
The level-2 parameter specifies that authentication checking is enabled/disabled for L2 Hello
packets.
NOTE
If either level-1 or level-2 are not specified, the configuration is applied to both level-1 and level-2.
Changing the IS-IS level globally
By default, a Brocade device can operate as both a Level-1 and IS-IS Level-2 router. To globally
change the level supported from Level-1 and Level-2 to Level-1 only, enter the following command.
Brocade(config-isis-router)# is-type level-1
Syntax: [no] is-type level-1 | level-1-2 | level-2
The level-1 | level-1-2 | level-2 parameter specifies the IS-IS type. If you want to re-enable support
for both IS-IS types, re-enter the command you entered to change the IS-IS type, and use “no” in
front of the command.
To change the IS-IS on an interface, refer to “Changing the IS-IS level on an interface” on page 287.
Disabling or re-enabling display of hostname
Brocade’s implementation of IS-IS supports RFC 2763, which describes a mechanism for mapping
IS-IS system IDs to the hostnames of the devices with those IDs. For example, if you set the
hostname on the Brocade device to “IS-IS Router 1”, the mapping feature uses this name instead
of the Brocade device’s IS-IS system ID in the output of the following commands:
• show isis database
• show isis interface
• show isis neighbor