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RE: OT: Looking for Ethernt/Optical Device

  • From: Michael Smith
  • Date: Tue Jun 01 23:08:38 2004

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

> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf
Of
> Eric Kuhnke
> Sent: Tuesday, June 01, 2004 2:06 PM
> To: [email protected]
> Subject: Re: OT: Looking for Ethernt/Optical Device
> 
> 
> Be 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
> >
> > On Tue, 1 Jun 2004, Erik Haagsman wrote:
> >
> >
> >>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
> >>
> >>
> >>On Tue, 2004-06-01 at 17:30, Michael Smith wrote:
> >>
> >>>-----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
> >>>hear about it.
> >>>
> >>>Thanks,
> >>>
> >>>Mike
> >>>
> >>>- --
> >>>Michael K. Smith        NoaNet
> >>>206.219.7116 (work)     866.662.6380 (NOC)
> >>>[email protected]      http://www.noanet.net
> >>>
> >>>-----BEGIN PGP SIGNATURE-----
> >>>Version: PGP 8.0.3
> >>>
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> >>>=hDVT
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> >>
> >>
> >
> >
>