Reference Guide

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Defaults
level1-into-level2 ( Level 1 to Level 2 leaking enabled.)
Command Modes
ROUTER ISIS (for IPv4)
CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command
History
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
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
Command
History
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.
level2-into-level1 Enter the keyword level2-into-level1 to advertise Level 2 inter-area routes
into Level 1 LSPs.
Described in RFC 2966.
prefix-list-name
Enter the name of a configured IP prefix list. Routes meeting the criteria of the
IP Prefix list are leaked.
Version 9.0.2.0 Introduced on the S6000.
Version 8.3.11.1 Introduced on Z9000
Version
8.3.7.0
Introduced on the S4810.
S6000
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.
Version 9.0.2.0 Introduced on S6000.
Version
8.3.7.0
Introduced on the S4810.