Specifications

15-7
Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 15 Configuring Ethernet OAM, CFM, and E-LMI
Configuring Ethernet CFM
You can manually configure individual Ethernet ping or jitter operations. You can also configure an IP
SLAs automatic Ethernet operation that queries the CFM database for all MEPs in a given maintenance
domain and VLAN. The operation then automatically creates individual Ethernet ping or jitter
operations based on the discovered MEPs.
Because IP SLAs is a Cisco proprietary feature, interoperability between CFM draft 1 and CFM 802.1ag
is handled automatically by the router.
For more information about IP SLAs operation with CFM, see the IP SLAs for Metro-Ethernet feature
module at this URL:
http://www.cisco.com/en/US/products/ps6922/products_feature_guide09186a00807d72f5.html
Configuring Ethernet CFM
Configuring Ethernet CFM requires configuring the CFM domain. You can optionally configure and
enable other CFM features such as crosschecking, remote MEP, port MEPs, SNMP traps, and fault
alarms. Note that some of the configuration commands and procedures differ from those used in CFM
draft 1.
• Default Ethernet CFM Configuration, page 15-7
• Ethernet CFM Configuration Guidelines, page 15-7
• Configuring the CFM Domain, page 15-8
• Configuring Ethernet CFM Crosscheck, page 15-11
• Configuring Static Remote MEP, page 15-12
• Configuring a Port MEP, page 15-14
• Configuring SNMP Traps, page 15-15
• Configuring Fault Alarms, page 15-16
• Configuring IP SLAs CFM Operation, page 15-17
Default Ethernet CFM Configuration
CFM is globally disabled.
CFM is enabled on all interfaces when CFM is globally enabled.
A port can be configured as a flow point (MIP/MEP), a transparent port, or disabled (CFM disabled). By
default, ports are transparent ports until configured as MEP, MIP, or disabled.
There are no MEPs or MIPs configured.
When configuring a MEP, if you do not configure direction, the default is up (inward facing).
Ethernet CFM Configuration Guidelines
• EtherChannels are not supported.
• CFM is not supported on and cannot be configured on routed ports.
• You cannot configure CFM on VLAN interfaces.
• CFM is supported on trunk ports and access ports with these exceptions: