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configure a loopback on a Gigabit Fiber port

I am trying to configure a loopback interface like so: http://www.cisco.com/en/US/products/hw/routers/ps368/module_installation_and_configuration_guides_chapter09186a0080523f70.html#wp1062339

on the following device

C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(50)SE, RELEASE SOFTWARE (fc1

on port gig0/1 which is using a 1000Base-SX adapter. This is for troubleshooting purposes and it does not appear to be a feasible option.  Is there another way to accomplish in the IOS?

Thank you,

M

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VIP Expert

configure a loopback on a Gigabit Fiber port

The loopback command usually applies to routers.  It is not on option for this switch.

HTH

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