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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.
area-password
Configure a hash message authentication code (HMAC) password for an area.
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
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
To prevent the link state database from receiving incorrect routing information from unauthorized
routers, use the area-password command on routers within an area.
Intermediate System to Intermediate System (IS-IS) 683