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default interface status

hallo

what is the default status for an interface on a router ?

"down, line protocol down" or "administratively down, line protocol down" ?

4 REPLIES
Community Member

Re: default interface status

This is the default in router "administratively down, line protocol down

Community Member

Re: default interface status

Good day,

The default status of interface on a router is :

interface down, line protocol down. if the interface is not connect to a switch.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1818/products_getting_started_guide_chapter09186a00800879e9.html

Don't forget to rate this post.

Regards.

Bronze

Re: default interface status

You normally don't see the admin down unless somebody has gone into interface config and issued the shut command.

Hall of Fame Super Gold

Re: default interface status

Actually it depends on how you brng the router up. If you boot a router that has no startup config (or with config-register set to 0x2142 so that it ignores an existing startup config) the router will ask if you want to run the startup dialog. If you respond no, then the IOS will put each of the physical interfaces into administratively down state - so that appears to be the default state.

If you do go through the startup dialog then you have opportunity to set interfaces as you want (in use/up or not in use/administratively down). And if you get a router with SDM installed and you use SDM then you may do things with interface state. But I would believe that these are no longer default interface state but state after someone has entered commands.

HTH

Rick

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