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Interface down/down and up/down

get_rthym
Beginner
Beginner

Hello, why is gig interface with fibre cable and serial interface show interface status as down/down when other end port is shut or cable is pulled off but fastethernet port show up as up/down even if you pull the cable at both ends.
As fastethernet shows up/down even when the interface has no cable attached, I doubt calling ISP when I see fa0/0 as up/down.
I used to think up/down meant far end problem with all interface standards.

Lek

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4 REPLIES 4

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend

Post the output to the command "sh interface ".

Hi Leo,

I'm sorry, I have no net connection, I m posting from my iPhone. Anyway, I tested myself yesterday in lab n found it to be so.
Any logical reasons?

Lek

Sent from Cisco Technical Support iPhone App

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend

Not without any information?  No.

Will post in few days cuz no net connection now:(


Sent from Cisco Technical Support iPhone App

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