show interface shows 100Mb/s on a 1000baseLX

[Shahzad Qadir]

Hi there,

I have a port on 7600 connecting via Single Mode Fibre to my service provider. Service provider has 1000-Full with auto-negotiate. I am seeing following output on my 7600

sh int g3/0/7 | i duplex

  Full-duplex, 100Mb/s, media type is LX

If I do show int capabilities it shows

sh int g3/0/7 capabilities | i Speed

  Speed:                 1000

My question is, if this interface is only capable of doing 1000Mb, how come it is showing 100-Full. If I change to nonegotiate option (both my side and provider side), link goes down. My provider has confirmed they have 1000Full their side.

Thanks

[Giuseppe Larosa]

Hello Shahzadqadir,

because you have an optical transceiver installed the port is only capable of running at 1000 Mbps.

the output of show int gi3/0/7 is clearly wrong and hopefully this is just a cosmetic bug.

Hope to help

Giuseppe

[Shahzad Qadir]

Thanks Giuseppe, I checked bug toolkit but couldn't find anything. Any way to find out which bug it might be... without raising a TAC case.