SAF and Split-Horizon Configuration Example

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This configuration example demonstrates how to disable split-horizon on an interface for SAF.
This configuration example demonstrates how to disable split-horizon on an interface for SAF.
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Latest revision as of 22:07, 4 June 2010

Contents

Introduction

This configuration example demonstrates how to disable split-horizon on an interface for SAF.

Example

Saf sh.jpg


Commonly Asked Question

Q: What is split-horizon, when should I disable split-horizon and where should it be configured when using SAF?

A: Similar to EIGRP, split-horizon is used by SAF to prevent service advertisement loops. Split-horizon is enabled by default on all links when SAF is configured. When using remote static neighbors across a non-SAF network in a hub-and-spoke topology, generally all remote neighbors will be configured with a single Loopback interface as their source. This results in the Loopback interface behaving as a multipoint link on the hub router.

Disable split-horizon on multipoint links on the hub router when SAF advertisements need to be advertised between spoke routers.

Related show Commands

sh eigrp service-family ipv4 int detail


Example:

Show eigrp service ipv4 int detail.jpg

Related Information

Technical Support & Documentation - Cisco Systems SAF Product Page - Cisco Systems Cisco IOS SAF Configuration Guide - Cisco Systems

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