Continuity Check Message (CCM)
Topology
Figure 1-1: CFM Topology
Prerequisite
Configure below hardware-profile commands related to CFM in configuration mode and reboot the nodes.
hardware-profile filter cfm-domain-name-str enable
hardware-profile statistics cfm-ccm enable
SW1
SW1#configure terminal | Enter configure mode. |
SW1(config)#bridge 1 protocol rstp vlan-bridge | Create bridge 1 as an RSTP VLAN-aware bridge. |
SW1(config)#vlan database | Entering vlan database |
SW1(config-vlan)#vlan 512 bridge 1 state enable | Create VLAN 512 on bridge 1. |
SW1(config-vlan)#exit | Exit vlan database |
SW1(config)#interface ce49 | Configure interface ce49. |
SW1(config-if)#switchport | Configure the interface as switch port. |
SW1(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW1(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW1(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface ce49. |
SW1(config-if)#exit | Exit config mode. |
SW1(config)#ethernet cfm domain-type character-string domain-name mdnam level 7 mip-creation default | Create cfm domain with type as character string and set mip creation criteria to default. |
SW1(config-ether-cfm)#service ma-type string ma-name testtm | Create ma type as string and configure the ma |
SW1(config-ether-cfm-ma)#vlan 25 bridge 1 | Configure vlan-id to associate the vlan to the MA |
SW1(config-ether-cfm-ma)#mip-creation default | Set the mip creation criteria to default for the MA |
SW1(config-ether-cfm-ma)#ethernet cfm mep down mpid 2 active true ce49 | Create down mep on ce49. |
SW1(config-ether-cfm-ma-mep)#cc multicast state enable | Enable cc multicast. |
SW1(config-ether-cfm-ma-mep)#exit-ether-ma-mep-mode | Exit CFM MEP configuration mode. |
SW1(config-ether-cfm-ma)#mep crosscheck mpid 1 | Configure crosscheck to remote MEP in VLAN 512. |
SW1(config-ether-cfm-ma)#cc interval 10ms | Enable cc interval for 10 millisecond. |
SW1(config-ether-cfm-ma)#exit-ether-ma-mode | Exit CFM MA configuration mode. |
SW1(config-ether-cfm)#exit | Exit ethernet CFM mode. |
SW1(config)#commit | Commit the configuration |
SW1(config)#exit | Exit the configure terminal mode |
SW2
SW2#configure terminal | Enter configure mode. |
SW2(config)#bridge 1 protocol rstp vlan-bridge | Create bridge 1 as an RSTP VLAN-aware bridge. |
SW2(config)#vlan database | Entering vlan database |
SW2(config-vlan)#vlan 512 bridge 1 state enable | Create VLAN 512 on bridge 1. |
SW2(config-vlan)#exit | Exit vlan database |
SW2(config)#interface ce0 | Configure interface ce0. |
SW2(config-if)#switchport | Configure the interface as switch port. |
SW2(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW2(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW2(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface ce0. |
SW2(config-if)#exit | Exit config mode. |
SW2(config)#interface xe0 | Configure interface xe0. |
SW2(config-if)#switchport | Configure the interface as switch port. |
SW2(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW2(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW2(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe1. |
SW2(config-if)#exit | Exit the interface mode |
SW2(config)#commit | Commit the configuration |
SW2(config)#exit | Exit the configure terminal mode |
SW3
SW3#configure terminal | Enter configure mode. |
SW3(config)#bridge 1 protocol rstp vlan-bridge | Create bridge 1 as an RSTP VLAN-aware bridge. |
SW3(config)#vlan database | Entering vlan database |
SW3(config-vlan)#vlan 512 bridge 1 state enable | Create VLAN 512 on bridge 1. |
SW3(config-vlan)#exit | Exit vlan database |
SW3(config)#interface xe17 | Configure interface xe17 |
SW3(config-if)#switchport | Configure the interface as switch port. |
SW3(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW3(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW3(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe17. |
SW3(config-if)#exit | Exit config mode. |
SW3(config)#interface xe1 | Configure interface xe1. |
SW3(config-if)#switchport | Configure the interface as switch port. |
SW3(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW3(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW3(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe1. |
SW3(config-if)#exit | Exit the interface mode |
SW3(config)#commit | Commit the configuration |
SW3(config)#exit | Exit the configure terminal mode |
SW4
SW4#configure terminal | Enter configure mode. |
SW4(config)#bridge 1 protocol rstp vlan-bridge | Create bridge 1 as an RSTP VLAN-aware bridge. |
SW4(config)#vlan database | Entering vlan database |
SW4(config-vlan)#vlan 512 bridge 1 state enable | Create VLAN 512 on bridge 1. |
SW4(config-vlan)#exit | Exit vlan database |
SW4(config)#interface xe1 | Configure interface xe1. |
SW4(config-if)#switchport | Configure the interface as switch port. |
SW4(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW4(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW4(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe1. |
SW4(config-if)#exit | Exit config mode. |
SW4(config)#interface xe9 | Configure interface xe9. |
SW4(config-if)#switchport | Configure the interface as switch port. |
SW4(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW4(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW4(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe9. |
SW4(config-if)#exit | Exit the interface mode |
SW4(config)#commit | Commit the configuration |
SW4(config)#exit | Exit the configure terminal mode |
SW5
SW5#configure terminal | Enter configure mode. |
SW5(config)#bridge 1 protocol rstp vlan-bridge | Create bridge 1 as an RSTP VLAN-aware bridge. |
SW5(config)#vlan database | Entering vlan database |
SW5(config-vlan)#vlan 512 bridge 1 state enable | Create VLAN 512 on bridge 1. |
SW5(config-vlan)#exit | Exit vlan database |
SW5(config)#interface xe9 | Configure interface xe9. |
SW5(config-if)#switchport | Configure the interface as switch port. |
SW5(config-if)#bridge-group 1 | Configure interface in bridge group 1. |
SW5(config-if)#switchport mode trunk | Configure interface mode as trunk. |
SW5(config-if)#switchport trunk allowed vlan all | Allow all VLANs on interface xe9. |
SW5(config-if)#exit | Exit config mode. |
SW5(config)#ethernet cfm domain-type character-string domain-name mdnam level 7 mip-creation default | Create cfm domain with type as character string and set mip creation criteria to default. |
SW5(config-ether-cfm)#service ma-type string ma-name testtm | Create ma type as string and set mip creation criteria to default. |
SW5(config-ether-cfm-ma)#vlan 25 bridge 1 | Configure vlan-id to associate the vlan to the MA |
SW5(config-ether-cfm-ma)#mip-creation default | Set the mip creation criteria to default for the MA |
SW5(config-ether-cfm-ma)#ethernet cfm mep down mpid 1 active true xe9 | Create down mep on xe9. |
SW5(config-ether-cfm-ma-mep)#cc multicast state enable | Enable cc multicast. |
SW5(config-ether-cfm-ma-mep)#exit-ether-ma- mep-mode | Exit CFM MEP configuration mode |
SW5(config-ether-cfm-ma)#mep crosscheck mpid 2 | Configure crosscheck to remote MEP in VLAN 512. |
SW5(config-ether-cfm-ma)#cc interval 10ms | Enable cc interval for 10 millisecond. |
SW5(config-ether-cfm-ma)#exit-ether-ma-mode | Exit CFM MA configuration mode. |
SW5(config-ether-cfm)#exit | Exit ethernet CFM mode. |
SW5(config)#commit | Commit the configuration |
SW5(config)#exit | Exit the configure terminal mode |
Validation
SW1#ping ethernet mac 3c2c.9926.e683 unicast source 2 domain mdnam vlan 512 bridge 1
success rate is 100 (5/5)
SW1#traceroute ethernet 3c2c.9926.e683 mepid 2 domain mdnam vlan 512 bridge 1
MP Mac Hops Relay-action Ingress/Egress Ingress/Egress action
3c2c.9926.e683 1 RlyHit Ingress IngOK
SW1#show ethernet cfm maintenance-points local mep domain mdnam ma-name testtm
MPID Dir Lvl VLAN CC-Stat HW-Status CC-Intvl MAC-Address Def Port MD Name
------------------------------------------------------------------------------
--
2 Dn 7 512 Enable Installed 10 ms 6cb9.c567.721d F ce49 mdnam
SW1#show ethernet cfm maintenance-points remote domain mdnam ma-name testtm
MEPID RMEPID LEVEL VLAN Rx CCM RDI PEER-MAC TYPE
------------------------------------------------------------------------------
-2 1 7 512 Yes False 3c2c.9926.e683 Configured
SW1#show ethernet cfm ma status domain mdnam ma testtm
MA NAME VLAN STATUS
-------------------------------------------
testtm 512 Active
Last modified date: 07-13-2023