Reference Guide

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Parameters
Defaults
No default password.
Command Modes
ROUTER ISIS
Command
History
Usage
Information
The domain password is inserted in Level 2 link state PDUs (LSPs), complete sequence number PDUs
(CSNPs), and partial sequence number PDUs (PSNPs).
Related
Commands
graceful-restart ietf
Enable Graceful Restart on an IS-IS router.
Syntax
graceful-restart ietf
To return to the default, use the no graceful-restart ietfcommand.
Parameters
Defaults
Default is Graceful Restart disabled
Command Modes
ROUTER ISIS
Command
History
Usage
Information
A Restart TLV included in every Graceful Restart enabled router’s HELLO PDUs. This enables the
(re)starting as well as the existing ISIS peers to detect the GR capability of the routers on the connected
network. A flag in the Restart TLV contains Restart Request (RR), Restart Acknowledge (RA) and
Suppress Adjacency Advertisement (SA) bit flags.
The ISIS Graceful Restart enabled router can co-exist in mixed topologies where some routers are
Graceful Restart enabled and others are not. For neighbors that are not Graceful Restart enabled, the
restarting router brings up the adjacency per the susal methods.
hmac-md5 (OPTIONAL) Enter the keyword hmac-md5 to encrypt the password using
MD5.
encryption-type
(OPTIONAL) Enter 7 to encrypt the password using DES.
password
Enter an alphanumeric string up to 16 characters long.
If you do not specify an encryption type or hmac-md5 keywords, the password is
processed as plain text which provides limited security.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.7.0
Introduced on the S4810.
Version 9.0.2.0 Introduced IPv6 ISIS support
area-password Configure an IS-IS area authentication password.
isis password Configure the authentication password for an interface.
S6000
ietf Enter ietf to enable Graceful Restart on the IS-IS router.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.7.0
Introduced on the S4810.