Specifications

17-38
System Management Software Configuration Guide for Cisco IE 2000U and Connected Grid Switches
Chapter 17 Configuring Ethernet OAM, CFM, and E-LMI
Configuring Ethernet OAM
Enabling Ethernet OAM Remote Loopback
You must enable Ethernet OAM remote loopback on an interface for the local OAM client to initiate
OAM remote loopback operations. Changing this setting causes the local OAM client to exchange
configuration information with its remote peer. Remote loopback is disabled by default.
Remote loopback has these limitations:
• Internet Group Management Protocol (IGMP) packets are not looped back.
• You cannot configure Ethernet OAM remote loopback on ISL ports or ports that belong to an
EtherChannel.
• If dynamic ARP inspection is enabled, ARP or reverse ARP packets are not looped or dropped.
BEFORE YOU BEGIN
Review the “Information About the Ethernet OAM Protocol” section on page 17-34.
DETAILED STEPS
Use the no ethernet oam remote-loopback {supported | timeout} interface configuration command to
disable remote loopback support or to remove the timeout setting.
EXAMPLE
The following example shows how to enable remote loopback support on interface GigabitEthernet 2/1:
Switch(config)# interface gigabitethernet 2/1
Switch(config-if)# ethernet oam remote-loopback supported
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Define an interface to configure as an OAM
interface, and enter interface configuration mode.
Step 3
ethernet oam remote-loopback {supported |
timeout seconds}
Enable Ethernet remote loopback on the interface, or
set a loopback timeout period.
• Enter supported to enable remote loopback.
• Enter timeout seconds to set a remote loopback
timeout period. The range is from 1 to 10
seconds.
Step 4
end Return to privileged EXEC mode.
Step 5
ethernet oam remote-loopback {start | stop}
{interface interface-id}
Turn on or turn off Ethernet OAM remote loopback
on an interface.
Step 6
show ethernet oam status [interface
interface-id]
Verify the configuration.
Step 7
copy running-config startup-config (Optional) Save your entries in the configuration
file.