IP Routing: ISIS Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
IS-IS IPv6 Advertise Passive Only
IS-IS IPv6 Advertise Passive Only
Last Updated: December 4, 2012
The IS-IS IPv6 Advertise Passive Only feature allows you to configure the Intermediate System-to-Intermediate System (IS-IS) instance on a device to advertise only IPv6 prefixes that belong to passive interfaces and exclude other connected IPv6 prefixes.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
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Prerequisites for IS-IS IPv6 Advertise Passive Only
Before you can use the IS-IS IPv6 Advertise Passive Only feature to exclude IPv6 prefixes of connected networks from IS-IS link-state protocol (LSP) data unit advertisements, the integrated IS-IS routing protocol must be configured. See the "Configuring a Basic IS-IS Network" section of the IP Routing: ISIS Configuration Guide.
Information About IS-IS IPv6 Advertise Passive Only
How to Configure IS-IS IPv6 Advertise Passive Only
Configuring IS-IS Instances on a Device to Advertise Passive Interface IPv6 Prefixes Only
Configuration Examples for IS-IS IPv6 Advertise Passive Only
Example: Configuring IS-IS Instances on a Device to Advertise Only Passive Interfaces
Device> enable Device# configure terminal Device(config)# router isis area1 Device(config-router)# net 47.0010.0000.0000.0000.0001.0001.1111.1111.1111.00 Device(config-router)# interface loopback 0 Device(config-if)# ipv6 address 2001:688:1001:1000::1/128 Device(config-if)# exit Device(config)# interface Ethernet 0/0 Device(config-if)# ipv6 address 2001:688:1001:100A::1/64 Device(config-if)# ipv6 router isis area1 Device(config-if)# exit Device(config)# router isis area1 Device(config-router)# passive-interface loopback 0 Device(config-router)# address-family ipv6 Device(config-router-af)# advertise passive-only
Feature Information for IS-IS IPv6 Advertise Passive Only
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
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