Administrator Guide

Usage Information
You cannot disable leaking from one level to another; however, you can regulate the rate flow from one level to
another using an IP Prefix list. If you do not configure the IP Prefix list, all routes are leaked.
You cannot enable leaking from Level 2 to Level 1, conditional route leaking can be enabled via IP prefix-list.
You can find more information in IETF RFC 2966, Domain-wide Prefix Distribution with Two-Level IS-IS.
area-password
Configure a hash message authentication code (HMAC) password for an area.
C9000 Series
Syntax
area-password [hmac-md5 | encryption-type] password
To delete a password, use the no area-password command.
Parameters
hmac-md5 (OPTIONAL) Enter the keywords hmac-md5 to encrypt the password.
encryption-type (OPTIONAL) Enter 7 to encrypt the password using DES.
password Enter a 1 to 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.
Defaults Not configured.
Command Modes ROUTER ISIS
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.5(0.1) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
Usage Information
To prevent the link state database from receiving incorrect routing information from unauthorized routers, use the
area-password command on routers within an area.
The configured password injects into Level 1 LSPs, CSNPs, and PSNPs.
Related
Commands
• 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.
clear isis
Restart the IS-IS process. All IS-IS data is cleared.
C9000 Series
Syntax
clear isis [vrf vrf-name] [tag] {* | database | traffic}
Intermediate System to Intermediate System (IS-IS) 779