Reference Guide

904 | Intermediate System to Intermediate System (IS-IS)
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Parameters
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
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
level1-into-level2
Enter the keyword level1-into-level2 to advertise Level 1 routes into
Level 2 LSPs.
This is the default.
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 8.3.19.0 Introduced on S4820T
Version 8.3.12.0 Introduced on S4810
Version 7.5.1.0 Introduced IPv6 ISIS support
Version 6.3.1.0 Introduced
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.