Interface administratively down

Unanswered Question
May 10th, 2011

Hi all,

  I am configuring a 2801 router . I set up ip address on the interface Fa 0/0 and  'no shutdown' command. But, after a restart , the interface is changing to down  again!

  What I must do to ?

Thanks in advanced!

I have this problem too.
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Roman Rodichev Tue, 05/10/2011 - 14:06

is it just down or admin down? if it's just down then it's down because there's no live ethernet connection, is it plugged into anything?

Flavio Miranda Tue, 05/10/2011 - 14:12

This is admin down ! and is plugged into  a switch .

Roman Rodichev Tue, 05/10/2011 - 15:37

If you do "show version" what does it say for configuration register, if it says something like 0xNN4N (where N is any number), then do these:

config t

config-register 0x2102

int fas0/0

no shut

exit

exit

write mem

reload

Andre Albuquerque Tue, 05/10/2011 - 14:08

You must save the configuration.

write mem

Or

copy running-config startup-config

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Posted May 10, 2011 at 2:04 PM
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