Table Of Contents
Integrated IS-IS Nonstop Forwarding (NSF) Awareness
Information About IS-IS NSF Awareness
Benefits of IS-IS NSF Awareness
Integrated IS-IS Nonstop Forwarding (NSF) Awareness
The Integrated IS-IS Nonstop Forwarding (NSF) Awareness feature allows customer premises equipment (CPE) routers that are NSF-aware to help NSF-capable routers perform nonstop forwarding of packets. This feature is part of the software code and requires no configuration.
Feature Specifications for the Integrated IS-IS NSF Awareness Feature
12.2(15)T
This feature was introduced.
For information about platforms supported, refer to Cisco Feature Navigator.
Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Contents
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Information About IS-IS NSF Awareness
Information About IS-IS NSF Awareness
The following concept describes the IS-IS NSF Awareness feature:
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Benefits of IS-IS NSF Awareness
The Integrated IS-IS Nonstop Forwarding Awareness feature allows CPE routers that are NSF-aware to help NSF-capable routers perform nonstop forwarding of packets. The awareness feature is part of the software code; it need not be configured.
The local router is not necessarily performing NSF; its awareness of NSF allows the integrity and accuracy of the RIB and link-state database occurring on the neighboring NSF-capable router to be maintained during the switchover process. Customers would want the IS-IS NSF Awareness feature when their routers are neighbors to NSF-capable routers.
Additional References
For additional information related to NSF and IS-IS, see the following section:
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Related Documents
Nonstop forwarding (NSF)
Cisco Nonstop Forwarding with Stateful Switchover Deployment Guide
Integrated IS-IS commands
Standards
No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.
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MIBs
RFCs
No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature.
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Technical Assistance
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