Hello Eric:
You can issue the following command in the 3550 series that takes care
of that issue. However, your mileage may vary. 
No errdisable detect cause gbic-invalid
Mike
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf
Of
Eric Kuhnke
Sent: Tuesday, June 01, 2004 2:06 PM
To: nanog@merit.edu
Subject: Re: OT: Looking for Ethernt/Optical DeviceBe warned that you can't use non-Cisco CWDM SFPs or GBICs in a cisco
switch or router... There is a PROM code in the cisco-sold units that
is identified by IOS. Plug in a non-cisco SFP/GBIC and it will shut
down the port. (This was discussed about 9 months ago on nanog-l, it
should be in the archives).Does anyone actually buy the $3500 CWDM SFPs? That's a $3300 profit
margin for Cisco...Scott McGrath wrote:
>
> Finisar also has CWDM optics in both the SFP and GBIC form factor
and
they
> are quite a bit less expensive than the Cisco solution and they do
have
a
> 16 lambda passive OADM as well as the 4 and 8 lambda models.
>
> Scott C. McGrath
>
>
>
>>What you could try is use the Cisco CWDM-MUX-4 and it's pluggable
optics
>>that can be fit into any GBIC 802.3z compliant slot. It's just an
OADM
>>with 4 or 8 wavelengths that delivers GigE to any box with pluggable
>>GBICs provided you use the right optics and it's quite a bit cheaper
>>than using ONS stuff. That said, CWDM doesn't get you much further
than
>>80 kilometres, above that DWDM is your only option, and a hell of a
lot
>>more expensive.
>>
>>Cheers,
>>
>>--
>>---
>>Erik Haagsman
>>Network Architect
>>We Dare BV
>>tel: +31(0)10 7507008
>>fax:+31(0)10 7507005
>>http://www.we-dare.nl
>>
>>
>>
>>>-----BEGIN PGP SIGNED MESSAGE-----
>>>Hash: SHA1
>>>
>>>Hello All:
>>>
>>>I'm wondering if anyone has seen a good and cheap(er) solution for
>>>providing multiple Gigabit Ethernet circuits over single pair of
>>>fiber. I'm looking for a way to do CWDM or DWDM that's cheaper
than
>>>putting in a Cisco 15454 or 15327. I'm only going to be doing 2
GigE
>>>circuits between two switches, so I don't need to plan for future
>>>growth.
>>>
>>>If anyone knows of a magic box that will do the above I would love
to