Command Line Reference Guide

790 | Intermediate System to Intermediate System (IS-IS)
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Usage
Information
You cannot disable leaking from one level to another, however you can regulate the rate flow from one
level to another via an IP Prefix list. If the IP Prefix list is not configured, all routes are leaked.
Additional information can be found in IETF RFC 2966, Domain-wide Prefix Distribution with
Two-Level IS-IS.
area-password
e
Configure a Hash Message Authentication Code (HMAC) authentication password for an area.
Syntax
area-password [hmac-md5 | encryption-type] password
To delete a password, enter no area-password.
Parameters
Defaults
Not configured.
Command Modes
ROUTER ISIS
Usage
Information
Use the area-password command on routers within an area to prevent the link state database from
receiving incorrect routing information from unauthorized routers.
The password configured is injected into Level 1 LSPs, CSNPs, and PSNPs.
Related
Commands
clear config
e
Clear IS-IS configurations that display under the router isis heading of the show running-config
command output.
Syntax
clear config
Command Modes
ROUTER ISIS
Usage
Information
Use caution when you enter this command. Back up your configuration prior to using this command or
your IS-IS configuration will be erased.
Related
Commands
hmac-md5 (OPTIONAL) Enter the keyword hmac-md5 to encrypt the password.
encryption-type
(OPTIONAL) Enter 7 to encrypt the password using DES.
password
Enter a 1—16-character length alphanumeric string to prevent unauthorized access or
incorrect routing information corrupting the link state database. The password is
processed as plain text which only provides limited security.
domain-password
Allows you to set the authentication password for a routing domain.
isis password
Allows you to configure an authentication password for an interface.
copy Use this command to save the current configuration to another location.