CHAPTER 1
REP Access Gateway
This chapter is not applicable for Cisco ASR 900 RSP3 Module.Note
Resilient Ethernet Protocol (REP) is a ring protection protocol designed to provide fast failure detection and
recovery. A REP Edge No-Neighbor (RENN) port is a port at the edge of a REP segment, connected to a
peer device that does not support REP. This feature allows CFM to notify REP when an error is detected,
such that CFM can be used to monitor the status of the Edge link, and REP can take actions.
This feature allows communication for REP to enable Ethernet Fault Detection (EFD) notifications between
the Cisco ASR 900 Series Routers and Cisco ASR 9000 Series Aggregation Services Routers configured
with REP Access Gateway (REP-AG).
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Prerequisites for REP Access Gateway, page 1
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Restrictions for REP Access Gateway, page 2
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Information About REP Access Gateway, page 2
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How to Configure REP Access Gateway, page 3
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Configuration Examples, page 5
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Verifying REP Access Gateway, page 6
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Additional References, page 7
Prerequisites for REP Access Gateway
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The interface connected to non-REP device port should be configured as a REP edgeNN port.
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CCM notification is processed only on a REP edgeNN port.
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Port MEP is only supported in REP AG. Port MEPs are configured to protect a single hop and used to
monitor link state through CFM. See Configuring Ethernet Connectivity Fault Management in a Service
Provider Network.
LAN Switching Configuration Guide Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)
1
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