About Ethernet Oam Protocol - Cisco Catalyst 4500 series Administration Manual

Chapter 66 Configuring Ethernet OAM and CFM
Level to transmit LCK: Default
Defect Condition: No Defect
presentRDI: FALSE
AIS-Status: Enabled
AIS Period: 60000(ms)
AIS Expiry Threshold: 3.5
Level to transmit AIS: Default
Suppress Alarm configuration: Enabled
Suppressing Alarms: No
MIP Settings:
-------------
Local MIPs:
* = MIP Manually Configured
------------------------------------------------------------------------------
Level Port
------------------------------------------------------------------------------
*5
This is an example of output from the show ethernet cfm traceroute command:
Switch# show ethernet cfm traceroute
Current Cache-size: 0 Hops
Max Cache-size: 100 Hops
Hold-time: 100 Minutes
You can use the privileged EXEC commands in
information.
Table 66-3 Displaying IP SLAs CFM Information
Command
show ip sla configuration
show ip sla ethernet-monitor configuration
[ ]
entry-number
show ip sla statistics
]
aggregated | details

About Ethernet OAM Protocol

The Ethernet OAM protocol for installing, monitoring, and troubleshooting Metro Ethernet networks
and Ethernet WANs relies on an optional sublayer in the data link layer of the OSI model. Normal link
operation does not require Ethernet OAM. You can implement Ethernet OAM on any full-duplex
point-to-point or emulated point-to-point Ethernet link for a network or part of a network (specified
interfaces).
OAM frames, called OAM protocol data units (OAM PDUs) use the slow protocol destination MAC
address 0180.c200.0002. They are intercepted by the MAC sublayer and cannot propagate beyond a
single hop within an Ethernet network. Ethernet OAM is a relatively slow protocol, with a maximum
transmission rate of 10 frames per second, resulting in minor impact to normal operations. However,
because the CPU must poll error counters frequently, when you enable link monitoring, the number of
required CPU cycles is proportional to the number of interfaces that must be polled.
OL-28731-01
MacAddress
Gi0/3 0021.d7ef.0700 N/A
Purpose
[ ]
Displays configuration values including all defaults for all IP SLAs
entry-number
operations or a specific operation.
Displays the configuration of the IP SLAs automatic Ethernet operation.
[
Displays current or aggregated operational status and statistics.
entry-number |
SrvcInst Type
Vlan
Table 66-3 to display IP SLAs Ethernet CFM
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
About Ethernet OAM Protocol
Id
2,7
66-33