MEP for an Ethernet Private Line Service
  • 04 Jul 2023
  • 6 Minutes to read
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MEP for an Ethernet Private Line Service

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Article Summary

Configuring Maintenance End Points for an EPL service


This use case article describes the configuration of the MEP for an Ethernet Private Line service.


Note: The Maintenance Domain and Maintenance Association must be configured prior to the configuration of the MEP.

  • Configuring of S-VLAN-aware Down MEP on NNI Port and S-VLAN-aware UP MEP on UNI Port.
  • Support for Multiple Maintenance Domain Level with MD Level of UP MEP being higher than the MD Level of Down MEP.
  • Functionality of Continuity Check (CC – for intervals of 3.3ms and 1 second), Loopback (LB), and Link Trace (LT)
  • Support for Cross-connect defect (DefXconCMM), Error-CCM defect (DefErrorCCM), Remote CCM defect (DefRemoteCCM), and RDI defect (DefRDICCM)
  • MAC Status defect (DefMACstatus) is not supported, due to its capability not being supported in Marvell chipset.

altran demo topology - Copy1.png

CLI Configurations

▶ To configure MEP for an EPL service

  1. Enable CFM Global Configurations
Your Product# configure terminal
Your Product(config)# ethernet cfm start
Your Product(config)# ethernet cfm enable
Your Product(config)# ethernet cfm offload
Your Product(config)# end
Your Product#
  1. Port Configurations
Your Product# configure terminal
Your Product(config)# interface range xl-ethernet 0/1-4
Your Product(config-if-range)# shut
Your Product(config-if-range)# flowcontrol on
Your Product(config-if-range)# mtu 10240
Your Product(config-if-range)# no shut
Your Product(config-if-range)# end
  1. Bridge Port Related Configurations
Your Product# configure terminal
Your Product(config)# bridge-mode provider-edge
Your Product(config)# interface xL-ethernet 0/2
Your Product(config-if)# bridge port-type customerEdgePort
Your Product(config-if)# end
Your Product# configure terminal
Your Product(config)# interface xL-ethernet 0/1
Your Product(config-if)# bridge port-type providerNetworkPort
Your Product(config-if)# end
  1. Service VLAN Configurations
Your Product# configure terminal
Your Product(config)# vlan 6
Your Product(config-vlan)# ports xL-ethernet 0/2,0/1 untagged xL-ethernet 0/2
Your Product(config-vlan)# service-type e-line
Your Product(config-vlan)# end
Your Product#
Your Product# configure terminal
Your Product(config)# vlan 7
Your Product(config-vlan)# ports xL-ethernet 0/2,0/1 untagged xL-ethernet 0/2
Your Product(config-vlan)# service-type e-line
Your Product(config-vlan)# end
  1. Customer VLAN to service VLAN mapping configurations (EPL Service)
Your Product# configure terminal
Your Product(config)# interface xL-ethernet 0/2
Your Product(config-if)# switchport customer-vlan 100 service-vlan 6
Your Product(config-if)# switchport customer-vlan 103 service-vlan 7
Your Product(config-if)# switchport dot1q customer vlan 100
Your Product(config-if)# switchport dot1q customer vlan 103
Your Product(config-if)# end
  1. UP MEP Configurations

UP MEP-1
MA and MD level configurations

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS5 level 5
Your Product(config-ether-ecfm)# service format char-string name CUSMA5 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 9 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 10 vlan 6
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 5 vlan 6 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create UP MEP with MEP ID 9 on VLAN 6

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/2
Your Product(config-if)# ethernet cfm mep level 5 inward mpid 9 vlan 6 active
Your Product(config-ether-mep)# end
Your Product#

Enable UP MEP CCM at level 5 on VLAN 6

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 5 vlan 6
Your Product(config-switch)# end

UP MEP-2
MA and MD level configurations

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS6 level 6
Your Product(config-ether-ecfm)# service format char-string name CUSMA6 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 11 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 12 vlan 6
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 6 vlan 6 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create UP MEP with MEP ID 11 on VLAN 6

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/2
Your Product(config-if)# ethernet cfm mep level 6 inward mpid 11 vlan 6 active
Your Product(config-ether-mep)# end
Your Product#

Enable UP MEP CCM at level 6 on VLAN 6

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 6 vlan 6
Your Product(config-switch)# end

UP MEP-3
MA and MD level config

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS7 level 7
Your Product(config-ether-ecfm)# service format char-string name CUSMA7 vlan 7
Your Product(config-ether-ecfm)# mep crosscheck mpid 13 vlan 7
Your Product(config-ether-ecfm)# mep crosscheck mpid 14 vlan 7
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 7 vlan 7 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create UP MEP with MEP ID 13 on VLAN 7

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/2
Your Product(config-if)# ethernet cfm mep level 7 inward mpid 13 vlan 7 active
Your Product(config-ether-mep)# end
Your Product#

Enable UP MEP CCM at level 7 on VLAN 7

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 7 vlan 7
Your Product(config-switch)# end
  1. DOWN MEP Configurations

DOWN MEP-1
MA and MD level configurations

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS2 level 2
Your Product(config-ether-ecfm)# service format char-string name CUSMA2 vlan 7
Your Product(config-ether-ecfm)# mep crosscheck mpid 1 vlan 7
Your Product(config-ether-ecfm)# mep crosscheck mpid 2 vlan 7
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 2 vlan 7 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create DOWN MEP with MEP ID 1 on VLAN 7

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# ethernet cfm mep level 2 mpid 1 vlan 7 active
Your Product(config-ether-mep)# end
Your Product#

Enable DOWN MEP CCM at level 2 on VLAN 7

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 2 vlan 7
Your Product(config-switch)# end

DOWN MEP-2
MA and MD level configurations

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS3 level 3
Your Product(config-ether-ecfm)# service format char-string name CUSMA3 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 3 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 4 vlan 6
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 3 vlan 6 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create DOWN MEP with MEP ID 3 on VLAN 6

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# ethernet cfm mep level 3 mpid 3 vlan 6 active
Your Product(config-ether-mep)# end
Your Product#

Enable DOWN MEP CCM at level 3 on VLAN 6

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 3 vlan 6
Your Product(config-switch)# end

DOWN MEP-3
MA and MD level configurations

Your Product# configure terminal
Your Product(config)# ethernet cfm domain format dns-like-name name CUS4 level 4
Your Product(config-ether-ecfm)# service format char-string name CUSMA4 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 5 vlan 6
Your Product(config-ether-ecfm)# mep crosscheck mpid 6 vlan 6
Your Product(config-ether-ecfm)# end
Your Product#

CCM interval with 3.3 milliseconds

Your Product# configure terminal
Your Product(config)# ethernet cfm cc level 4 vlan 6 interval three-hundred-hertz
Your Product(config)# end
Your Product#

Create DOWN MEP with MEP ID 5 on VLAN 7

Your Product# configure terminal
Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# ethernet cfm mep level 4 mpid 5 vlan 6 active
Your Product(config-ether-mep)# end
Your Product#

Enable DOWN MEP CCM at level 4 on VLAN 6

Your Product# configure terminal
Your Product(config)# switch default
Your Product(config-switch)# ethernet cfm cc enable level 4 vlan 6
Your Product(config-switch)# end

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