From: Tim Fletcher (groupstudy@fletchmail.net)
Date: Thu Jan 06 2005 - 21:34:47 GMT-3
I've noticed the same problem. I've tried several different WICs in several different routers, I could never get clocking to work on the top port.
I also found that if I put 2 WIC-2Ts in a 2600, I could only ever get 3 out of the 4 to come up. I tried at least 2 routers with the same results.
-Tim Fletcher
At 03:00 PM 1/6/2005, Koen Peetermans wrote:
>It's been a while since I wrote to groupstudy, so why not talk about
>something I've noticed which was troubling me in the days I was cabling my
>lab, and now I have some additional information that *might* help other
>people....
>
>The problem is with putting a DCE clock on the upper connector of a WIC-2T
>interface. While putting a DCE clock on the lower connector (S0/0) works, it
>is sometimes not possible to make it working on the upper (second) interface
>(S0/1). The line protocol goes down after a few keepalives, and no pings can
>pass regardless of the clocking rate put on the DCE side......
>
>I solved this problem by cabling differently (no upper-to-upper connections
>from WIC-2T to WIC-2T, but lower-to-upper connections with DCE on the lower
>connector), or clocking DCE from a WIC-1T (which always seems to work).
>
>Up until a few days ago, I was unable to find out what this would be
>causing, was it a cisco platform problem or a WIC-2T problem.
>I've done some tests with other revisions of the WIC-2T, and it appears that
>this is a problem with certain revisions of the WIC-2T.
>
>Unfortunately I only have HW revision 1.0, Board revision D0 in my home lab,
>which seems to be having a problem with putting DCE on the upper connector.
>
>(show diag)
>
>WIC Slot 0:
> Serial 2T (12in1)
> Hardware revision 1.0 Board revision D0
>
>However, trying with other versions, Revision A0 and C0 didn't experience
>these clocking problems and worked perfectly..... In this case, older is
>better ????
>
>Maybe someone other has or will run across this issue, and this could help
>them a little.
>
>But I would still be interesting in hearing from others that have
>experienced this problem, and be interested as well where they got the WIC's
>from.......
>
>Kind regards,
>
>Koen.
>
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