CLI Guide

Usage Information To perform protocol-support consistency checks on hello packets, use this
command. The adjacency-check is enabled by default.
advertise
Leak routes between levels (distribute IP prefixes between Level 1 and Level 2 and vice versa).
Syntax
advertise {level1-into-level2 | level2-into-level1} prefix-
list-name
To return to the default, use the no advertise {level1-into-level2 |
level2-into-level1}[prefix-list-name] command.
Parameters
level1-into-level2 Enter the keywords level1-into-level2 to advertise
Level 1 routes into Level 2 LSPs. This setting is the default.
level2-into-level1 Enter the keywords level2-into-level1 to advertise
Level 2 inter-area routes into Level 1 LSPs. This behavior is
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.
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)
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
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 can find more information in IETF RFC 2966, Domain-wide Prefix Distribution
with Two-Level IS-IS.
Intermediate System to Intermediate System (IS-IS)
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