I have seen this behavior caused by a mismatch of SFPs, SX on one side and LX on the other.
/p On Tue, Nov 24, 2009 at 9:04 AM, Michael Ruiz <mr...@telwestservices.com> wrote: >>I don't think there is any reason to have hard-set speed and duplex, >>particularly between two Cisco's. Why not just set *both* sides (you >>can't set just one) to auto-negotation - 'no speed nonegotiate' on the >>7606 side. Is this a straight shot, single fiber pair between the two >>or are there intermediate junctions or optics? It sounds like you have >>questionable fiber or optics in the path. It could be the fiber itself >>or the GBICs on either side. > > Mike, > > I tried setting the 7206 to auto, and the 7606 to nonnegtiate, > however, no dice. We put light meter on both ends of the GBIC and light > readings are at -20, which are applicable. Between the two routers are > MMF and it is straight shot with no transport equipment in between. > > -----Original Message----- > From: Michael K. Smith - Adhost [mailto:mksm...@adhost.com] > Sent: Tuesday, November 24, 2009 10:25 AM > To: Michael Ruiz; nanog@nanog.org > Subject: RE: <Help --> Having trouble trying to activate a GigE > connection> > > Hello Michael: > >> -----Original Message----- >> From: Michael Ruiz [mailto:mr...@telwestservices.com] >> Sent: Tuesday, November 24, 2009 8:02 AM >> To: nanog@nanog.org >> Subject: <Help --> Having trouble trying to activate a GigE > connection> >> >> Group, >> >> >> >> I am having an issue with activating a Gige interface >> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls >> connecting to a line module WS-X6416-GBIC. I have verified that the >> GBIC-MMF have good light reading and the MMF fiber jumper are not >> reversed. The GigE connection comes up briefly for about a few >> seconds, >> takes a burst of errors and goes down. I have tried to set the speed >> to >> nonegotiate on both ends, set one end to speed auto. No dice. Here > is >> the copy of the configuration. On my 7606 I show that the GigE >> interface is up/up but on the 7206vxr I show down/down. Any help will >> be greatly appreciated. Thanks! >> >> >> > I don't think there is any reason to have hard-set speed and duplex, > particularly between two Cisco's. Why not just set *both* sides (you > can't set just one) to auto-negotation - 'no speed nonegotiate' on the > 7606 side. Is this a straight shot, single fiber pair between the two > or are there intermediate junctions or optics? It sounds like you have > questionable fiber or optics in the path. It could be the fiber itself > or the GBICs on either side. > > Regards, > > Mike > > -- Peter Sandström Head of Operations, Stardoll AB phone: +46 (0)70 456 05 28 e-mail: pe...@stardoll.com | stardoll: pj0tr mail/visit: Hudiksvallsgatan 8, 113 30 Stockholm, Sweden www.stardoll.com - Fame, fashion and friends