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Community Member

Adding a loopback address to the FE of a Cisco 1721?

Hi,

I was wondering how I can add a loopback address to the FE port of my Cisco 1721 router?

I am using the serial port, but not the FE for my lab and would like to bring this up.

Thanks

3 REPLIES
Community Member

Re: Adding a loopback address to the FE of a Cisco 1721?

As far as I know it is:

#int loopback 0

#ip add x.x.x.x 255.255.255.255

Cisco Employee

Re: Adding a loopback address to the FE of a Cisco 1721?

Andy,

You just need to configure "no keepalive" under the interface.

int fa0

no keepalive

This will bring the interface is up/up state.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
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Community Member

Re: Adding a loopback address to the FE of a Cisco 1721?

Would this work on a 2620 router as well?

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