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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Command Reference, Cisco IOS Release 15.1(3)MR
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Chapter Cisco MWR 2941 Router Command Reference, Release 15.1(3)MR
ethernet loopback (interface configuration)
After you have configured Ethernet loopback, you enter the ethernet loopback start interface-id
privileged EXEC command to begin the loopback. To stop loopback, enter the ethernet loopback stop
{interface-id | all} command.
Examples This example shows how to configure an Ethernet loopback to swap the MAC source and destination
addresses and to time out after 30 seconds and to start the loopback process and verify the configuration.
You must confirm the action before configuring.
Router(config)# interface gigabitethernet 0/1
Router(config-if)# ethernet loopback facility mac-address swap timeout 30 supported
Router(config-if)# end
Router# ethernet loopback start gigabitethernet 0/1
This is an intrusive loopback.
Therefore, while you test Ethernet connectivity,
you will be unable to pass traffic across that link.
Proceed with Local Loopback? [confirm]
Router# show ethernet loopback
=====================================
Loopback Session 0 : Interface GI0/1
Direction : facility
Type : port
Status : configured
MAC Mode : swap
Time out : 30
Related Commands Command Description
ethernet loopback
(privileged EXEC)
Starts or stops an Ethernet loopback operation on an interface.
show ethernet loopback Displays the Ethernet loopbacks configured on the switch or the specified
interface.
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