Configuring and Enabling Frame Loss Measurement

This article describes the steps to configure and enable the transmission and reception of Frame loss PDU by an MEP.

Frame Loss can be measured using either of the following methods:

• Dual-ended using CCM messages
• Single-ended using LMM/LMR messages

CLI Configurations

To configure and enable frame loss measurement

1. Execute the steps given in CLI Configurations to configure MEP before sending the frame loss messages.

2. Execute the steps given in CLI Configurations to enable ECFM and Y.1731.

3. Measure frame loss using:

• Single-ended method
  Send the message to an MEP using the destination’s MAC address.
  your product# ethernet cfm frame loss start level 7 vlan 101 mac 00:02:02:03:04:03 count 5

OR

• Dual-ended method
  Configure the CC unicast MAC address. This is the MAC address of the remote MEP with which the frame loss is to be measured.
  your product# configure terminal
  your product(config)# interface gigabitethernet 0/1
  your product(config-if)# ethernet cfm mep level 7 mpid 1 vlan 101 active
  your product(config-ether-mep)# set ccm- mac unicast 00:02:02:03:04:03
  your product(config-ether-mep)# end
  Send the message to measure frame loss by setting the role as performance-monitoring.
  your product# configure terminal
  your product(config)# ethernet cfm cc level 7 vlan 101 role performance-monitoring
  your product(config)# end

To stop frame loss measurement

1. Stop the single-ended frame loss measurement by:

• Configuring the count or deadline parameter while initiating the loss measurement

OR

• Using the ethernet cfm frame loss stop level vlan command

2. Stop dual-ended frame loss measurement by:

• Disabling CC transmission

your product# configure terminal
your product(config)# no ethernet cfm cc enable level 7 vlan 101
your product(config)# end

OR

• Changing the CC role to a role other than performance monitoring

your product# configure terminal
your product(config)# ethernet cfm cc level 7 vlan 101 role fault-management
your productconfig)# end

For sending a Frame Loss message to an MEP using destination’s MEPID

Example: ethernet cfm frame loss start level 7 vlan 101 mpid 2 count 5

• MAC Address of MEP with specified target mpid must be learned prior to the execution of the command.
• For a VLAN-UnAware MEP, vlan keyword must not be provided with the command.
• ECFM and Y.1731 should be enabled for successful frame loss message transmission.
• At a time, MEP can perform only one type of loss measurement.
• count and b, if not provided, assumes an infinite number of frame loss messages to send.
• User can view the result of loss measurement using show ethernet cfm frame loss buffer command.
• CC Performance monitoring should be enabled on all the MEPs involved in dual-ended frame loss measurement.

SNMP Configurations

To configure and enable frame loss measurement

1. Execute the steps given in SNMP Configurations to configure MEP before sending the frame loss messages.

2. Execute the steps given in SNMP Configurations to enable ECFM and Y.1731.

3. Measure frame loss using:

• Single-ended method [Index: ContextID = 0, MD-Index = 1, MA-Index = 1, MEP-Index = 5]
  Send the message to an MEP using destination MAC address.
  % snmp0 set {{fsMIY1731MepTransmitLmmDestIsMepId.0.1.1.5 false }}
  %snmp0 set {{fsMIY1731MepTransmitLmmDestMacAddress.0.1.1.5 00:02:02:03:04:0a }}
  % snmp0 set {{fsMIY1731MepTransmitLmmMessages.0.1.1.5 5 }}
  % snmp0 set {{fsMIY1731MepTransmitLmmStatus.0.1.1.5 start }}

OR

• Dual-ended method
  Configure the CC unicast MAC address. This is the MAC address of the remote MEP with which the frame loss is to be measured. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1, MEP-Index = 5]
  % snmp0 set {{fsMIEcfmMepRowStatus.0.1.1.5 notInService }}
  % snmp0 set {{fsMIY1731MepUnicastCcmMacAddress.0.1.1.5 00:02:02:03:04:0a }}
  % snmp0 set {{fsMIEcfmMepRowStatus.0.1.1.5 active }}
  Send the message to measure frame loss by setting the role as performance-monitoring. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1]
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 notInService }}
  % snmp0 set {{fsMIY1731MeCcmApplication.0.1.1 ccPerformanceMonitoring }}
  % snmp0 set {{fsMIY1731MeCciEnabled.0.1.1 true }}
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 active }}

To stop frame loss measurement

1. Stop single-ended frame loss measurement by:

• Configuring the number of messages or deadline parameter while initiating the loss measurement. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1, MEP-Index = 5]
  % snmp0 set {{fsMIY1731MepTransmitLmmMessages.0.1.1.5 5 }}
  % snmp0 set {{fsMIY1731MepTransmitLmmDeadline.0.1.1.5 10 }}

OR

• Configuring the transmit status as stop: [Index: ContextID = 0, MD-Index = 1, MA-Index = 1, MEP-Index = 5]
  % snmp0 set {{fsMIY1731MepTransmitLmmStatus.0.1.1.5 stop }}

2. Stop dual-ended frame loss measurement by:

• Disabling CC transmission. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1]
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 notInService }}
  % snmp0 set {{fsMIY1731MeCciEnabled.0.1.1 false }}
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 active }}

OR

• Changing the CC role to role other than performance monitoring. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1]
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 notInService**}}**
  % snmp0 set {{fsMIY1731MeCcmApplication.0.1.1 ccFaultManagement**}}**
  % snmp0 set {{fsMIY1731MeRowStatus.0.1.1 active**}}**