Configuring Resilient Ethernet Protocol; Restrictions For Resilient Ethernet Protocol - Cisco ASR 900 Series Configuration Manual

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Configuring Resilient Ethernet Protocol

Note

This chapter is not applicable for Cisco ASR 900 RSP3 Module.

The Resilient Ethernet Protocol (REP) is a Cisco proprietary protocol that provides an alternative to the

Spanning Tree Protocol (STP). REP provides a way to control network loops, handle link failures, and

improve convergence time. It controls a group of ports connected in a segment, ensures that the segment

does not create any bridging loops, and responds to link failures within the segment. REP provides a basis

for constructing complex networks and supports VLAN load balancing.

The convergence value is improved from Cisco IOS XE 3.17 release.

Note

•

• You must configure each segment port; an incorrect configuration can cause forwarding loops in networks.

• REP can manage only a single failed port within the segment; multiple port failures within the REP

• You should configure REP only in networks with redundancy. Configuring REP in a network without

• Use LSL timers greater than 280mseconds to avoid REP flaps with IGMP snooping.

• Use LSL timers of 520mseconds to avoid REP flaps.

Restrictions for Resilient Ethernet Protocol, page 9

Information About REP, page 10

How to Configure REP, page 18

Configuration Examples for REP, page 32

Additional References, page 34

Feature Information for Resilient Ethernet Protocol, page 35

segment causes high loss of network connectivity.

redundancy causes loss of network connectivity.

LAN Switching Configuration Guide Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)

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