75-24
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
 
Chapter 75      Configuring Ethernet OAM and CFM
Configuring Ethernet CFM
Operations List     : Empty
Schedule Period(sec): 60
Request size        : 0
CoS                 : 0
Start Time          : Start Time already passed
SNMP RowStatus      : Active
Switch#
Configuring CFM on C-VLAN (Inner VLAN)
IEEE 802.1ag CFM brings in a support that allows customers to provision maintenance intermediate 
points (MIPs) and Up maintenance endpoints (MEPs) on the C-VLAN (inner VLAN) component of 
QinQ ports to provide visibility on the C-VLAN. C-VLANs are now supported on 802.1q tunnel ports. 
This allows monitoring or troubleshooting when QinQ is enabled on the provider edge (PE) device.
For more information about this feature and the supported commands, see:
http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_cfm-ieee_cvlan.html
The switch supports 802.1q-tunnel-port mode.
To configure Ethernet CFM CVLAN Up MEPs, perform this task:
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# ethernet cfm domain 
domain-name level level-id
Define a CFM domain, set the domain level, and enter 
ethernet-cfm configuration mode for the domain. The 
maintenance level number range is 0 to 7.
Step 3
Switch(config-ecfm)# service {ma-name | 
ma-number | vpn-id} vlan svlan-id inner-vlan 
cvlan-id
Define a customer service maintenance association name 
or number or VPN ID to be associated with the domain, 
define a CVLAN service, and enter ethernet-cfm-service 
configuration mode.
• ma-name—a string of no more than 100 characters that 
identifies the MAID.
• ma-number—a value from 0 to 65535.
• vpn-id vpn—enter a VPN ID as the ma-name. 
• vlan svlan-id—VLAN range is from 1 to 4094. This 
identifies the outer VLAN (service provider vlan id) 
that CFM frames go out with.
• inner-vlan cvlan-id—VLAN range is from 1 to 4094. 
This identifies the inner VLAN (customer VLAN) that 
is monitored through CFM.
Step 4
Switch(config-ecfm-arv)# continuity-check
Enables sending and receiving of continuity check 
messages.