[c-nsp] Routing design question

[Michael K. Smith - Adhost]

Hello Tassos:

> -----Original Message-----
> From: Tassos Chatzithomaoglou [mailto:achatz at forthnet.gr]
> Sent: Monday, October 15, 2007 9:03 AM
> To: Michael K. Smith - Adhost
> Cc: Lincoln Dale (ltd); Gert Doering; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Routing design question
> 
> Hi Michael,
> 
> Have a look at the BX SFPs:
> 
> http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/
> compatibility/matrix/OL632702.html
> 
> --
> Tassos
> 

Well there you have it!  :-)  Judging from the description in the document below, the UDLD packets are sent by the device so the underlying optics shouldn't matter.

http://cco.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/udld.html

Regards,

Mike

> Michael K. Smith - Adhost wrote on 15/10/2007 5:52 μμ:
> > Hello Tassos:
> >
> >> -----Original Message-----
> >> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> >> bounces at puck.nether.net] On Behalf Of Tassos Chatzithomaoglou
> >> Sent: Monday, October 15, 2007 3:49 AM
> >> To: Lincoln Dale (ltd)
> >> Cc: Gert Doering; cisco-nsp at puck.nether.net
> >> Subject: Re: [c-nsp] Routing design question
> >>
> >> Hi Lincoln,
> >>
> >> If i remember right, there are some SFPs that use a single fiber for
> >> both tx/rx.
> >>
> >> Does UDLD help in such cases? Is there a possibility for a problem
> in
> >> only one direction?
> >>
> >> --
> >> Tassos
> >>
> >>
> >
> > The device would have to support the SFP and, since the transmit and
> > receive are on different wavelengths, UDLD could be coded to respond
> to
> > it in the same way it responds to transmit and receive on different
> > interface ports.  However, I don't think Cisco supports these optics
> in
> > their switching platform.  Please someone correct me if I'm wrong!
> I've
> > seen these devices as transceivers that feed back to the device over
> > UTP.
> >
> > Regards,
> >
> > Mike
> >
> >