CFM and Y1731 Configuration

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Table of Contents

Table of Contents
Chapter 1 Overview..........................................................................................................................................1

1.1 Stipulation........................................................................................................................................... 1
1.1.1 Format Stipulation in the Command Line...........................................................................1

Chapter 2 CFM Configuration.........................................................................................................................2
2.1 CFM Configuration Task List............................................................................................................2
2.2 CFM Maintenance Task List.............................................................................................................2
2.3 CFM Configuration............................................................................................................................ 2

2.3.1 Adding the Maintenance Domain........................................................................................ 2
2.3.2 Adding the Maintenance Association..................................................................................2
2.3.3 Adding MIP (Maintenance domain Intermediate Point)................................................... 2
2.3.4 Adding MEP (Maintenance association End Point)..........................................................3
2.3.5 Starting CFM...........................................................................................................................3

2.4 CFM Maintenance............................................................................................................................. 3
2.4.1 Using the Loopback Function.............................................................................................. 3
2.4.2 Using the Linktrace Function................................................................................................3

2.5 Configuration Example......................................................................................................................4

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CFM Configuration

Chapter 1 Overview
1.1 Stipulation
1.1.1 Format Stipulation in the Command Line

Syntax Meaning
Bold Stands for the keyword in the command line, which stays unchanged and must be entered

without any modification. It is presented as a bold in the command line.
{italic} Stands for the parameter in the command line, which must be replaced by the actual value.

It must be presented by the italic in the brace.
<italic> Stands for the parameter in the command line, which must be replaced by the actual value.

It must be presented by the italic in the point bracket.
[ ] Stands for the optional parameter, which is in the square bracket.
{ x | y | ... } Means that you can choose one option from two or more options.
[ x | y | ... ] Means that you can choose one option or none from two or more options.
{ x | y | ... } * Means that you has to choose at least one option from two or more options, or even choose

all options.
[ x | y | ... ] * Means that you can choose multiple options or none from two or more options.
&<1-n> Means that the parameter before the “&” symbol can be entered 1～n times.
# Means that the line starting with the “#” symbol is an explanation line.

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CFM Configuration

Chapter 2 CFM Configuration
2.1 CFM Configuration Task List

 Adding the Maintenance Domain
 Adding the Maintenance Association
 Adding MIP (Maintenance domain Intermediate Point)
 Adding MEP (Maintenance association End Point)
 Starting CFM

2.2 CFM Maintenance Task List
 Using the Loopback Function
 Using the Linktrace Function

2.3 CFM Configuration
2.3.1 Adding the Maintenance Domain

Configuration mode: Global

Command Purpose

ethernet cfm md mdnf {string} mdn Adds a maintenance domain whose name is
<char_string> [level <0-7> | creation char_string.
<MHF_creation_type> | sit Note:
<sender_id_type> | ip <IP_address>]

【1】 The system enters the
maintenance domain configuration
mode after the maintenance
domain is added.

2.3.2 Adding the Maintenance Association
Configuration mode: maintenance domain

Command Purpose

ma manf {string} <char_string> ci {100ms | Adds a maintenance association whose
1s | 10s | 1min | 10min} meps <mepids> name is char_string.
[vlan <1-4094> | creation
<MHF_creation_type> | sit
<sender_id_type> | ip <IP_address>]

2.3.3 Adding MIP (Maintenance domain Intermediate Point)
Configuration mode: physical interface

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CFM Configuration

Command Purpose

ethernet cfm mip add level <0-7> [vlan Adds a designated VLAN and hierarchical
<1-4094>] MIP to the designated physical interface.

2.3.4 Adding MEP (Maintenance association End Point)
Configuration mode: physical interface

Command Purpose

ethernet cfm mep add mdnf Adds a designated maintenance domain and
an MEP to the designated physical interface.

{string} <char_string> manf {string}
<char_string> mepid <1-8191>
rmepid <1-8191> [direction {up |
down} | ip <ip_address> | lap {all |
mac | rCCM | eCCM | xcon | none}]

2.3.5 Starting CFM
Configuration mode: Global

Command Purpose

ethernet cfm {enable} Starts CFM.

2.4 CFM Maintenance
2.4.1 Using the Loopback Function

Configuration mode: EXEC

Command Purpose

ethernet cfm loopback mdnf {string} Uses a designated MEP to conduct loopback
<char_string> manf {string} <char_string> towards itself.
mepid <1-8191> mac
<AA:BB:CC:DD:EE:FF> number <1-64>

2.4.2 Using the Linktrace Function
Configuration mode: EXEC

Command Purpose

ethernet cfm linktrace mdnf {string} Uses a designated MEP to conduct loopback
<char_string> manf {string} <char_string> towards itself.
mepid <1-8191> mac

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CFM Configuration

<AA:BB:CC:DD:EE:FF> [ttl {1-255} |
fdb-only {yes}] <char_string> manf {string}
<char_string> mepid <1-8191> mac
<AA:BB:CC:DD:EE:FF> ttl <1-255>

2.5 Configuration Example
Users want to add a maintenance domain whose name is customer and hierarchy is

5, set a customer1 maintenance association for vlan1, configure the transmission
interval of CCM of the maintenance association to 1s (MEP1, MEP2, MEP2009) and at
last add an MEP whose MEPID is 2009 to physical port1 and designate its remote MEP
as 2008.

Switch_config#ethernet cfm md mdnf string customer level 5
Switch_config_cfm#ma manf string customer1 vlan 1 ci 1s meps 1-2,2009
Switch_config_cfm#interface g0/1
Switch_config_g0/1#ethernet cfm mep add mdnf string customer manf string customer1 mepid
2009 mep 2008 direction DOWN lap ALL
Switch_config_g0/1#exit
Switch_config#ethernet cfm enable

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