Re: Strange issue - Copper vs Fibre SFP port on 2921 Router

What version of IOS?

Sent from my iPad

On Jun 16, 2012, at 3:37 AM, Irfan Sid <lifeoverip_at_gmail.com> wrote:

> I have a strange issue with a ISR2921 Router
>
> I have two ISR2921 routers connected back to back over a service provider
> who have provided us EoMPLS.
>
> When I connect the ISR on A end to copper 1 Gig port and B end to a optical
> 1 Gig SFP port everything works fine and I can ping end to end.
>
> When I connect the ISR on A end to Optical SFP port and B end to a
> optical SFP port I loose Layer 3 connectivity.
>
> I have tried two different optical port on ISR on A end, the built in G0/1
> optical port as well as a optical HWIC module G0/0/0 and Layer 3 is not
> working on both. Although I can see MAC address of the remote device and
> when I ping in the ARP table, but ping is unsuccessful.
>
> The SFP and Fibre cables are tested as working and replaced as well, so
> that they are not an issue here.
>
> Could the ISR on A end have a optical I/0 controller processing fault (if
> there is such thing in a router?). Its strange that two optical ports are
> faulty and layer 3 not working on them at the same time, the built in
> optical and the HWIC optical.
>
> Please advice? Thanks in advance
>
>
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Received on Sat Jun 16 2012 - 20:13:05 ART