Loopback; Figure 27: Cfm Loopback - Alcatel-Lucent 7750 SR Manual

Ethernet Connectivity Fault Management (ETH-CFM)

Loopback

A loopback message is generated by an MEP to its peer MEP or an MIP. The functions are similar
to an IP ping to verify Ethernet connectivity between the nodes.
MEP1
Reply Messages
The following loopback-related functions are supported:
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•
•
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Loopback
Messages
MEP1 MEP2 MEP3
Loopback
MEP2

Figure 27: CFM Loopback

Loopback message functionality on an MEP or MIP can be enabled or disabled.
MEP — Supports generating loopback messages and responding to loopback messages
with loopback reply messages.
MIP — Supports responding to loopback messages with loopback reply messages when
loopback messages are targeted to self.
Displays the loopback test results on the originating MEP.
MEP10
MEP4 MEP5 MEP6
MEP11
MEP12
MEP3
MEP7 MEP8
Bridge
Port
MIP
MEP
7750 SR OS Services Guide
MEP4
Fig_14