Specifications

15-24
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
Understanding CFM ITU-T Y.1731 Fault Management
To disable the IP SLA TWAMP reflector, enter the no ip sla responder twamp global configuration
command. This example shows how to configure a switch as an IP SLA TWAMP reflector:
Switch(config)# ip sla responder twamp
Switch(config-twamp-srvr)# timeout 300
Troubleshooting TWAMP
Use these commands to troubleshoot TWAMP sessions:
debug ip sla error twamp [connection source-ip ip-address | control {reflector | server} | session
source-ip ip-address]
debug ip sla trace twamp [connection source-ip ip-address | control {reflector | server} | session
source-ip ip-address]
Understanding CFM ITU-T Y.1731 Fault Management
The ITU-T Y.1731 feature provides new CFM functionality for fault and performance management for
service providers in large network. The router supports Ethernet Alarm Indication Signal (ETH-AIS),
Ethernet Remote Defect Indication (ETH-RDI), and Ethernet Multicast Loopback Message
(MCAST-LBM) functionality for fault detection, verification, and isolation.
• Y.1731 Terminology, page 15-24
• Alarm Indication Signals, page 15-25
• Ethernet Remote Defect Indication, page 15-26
• Ethernet Locked Signal, page 15-26
• Multicast Ethernet Loopback, page 15-26
Y.1731 Terminology
• Server MEP—the combination of the server layer termination function and server or Ethernet
adaptation layer termination function or server or Ethernet adaptation function, where the server
layer termination function is expected to run OAM mechanisms specific to the server layer. The
supported mechanisms are link up, link down, and 802.3ah.
• Server layer—a virtual MEP layer capable of detecting fault conditions.
Step 3
timeout seconds (Optional) Set the maximum time, in seconds, the session can be inactive
before the session ends. The range is 1–604800 seconds. The default is
900 seconds.
Step 4
end Return to privileged EXEC mode.
Step 5
show ip sla twamp session [source-ip
ip-address source-port port-number]
(Optional) Display information about TWAMP test results for the
specified client.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose