Follow up..... Bug CSCul88801 SFP's become unavailable.... Scott
On Thu, Mar 6, 2014 at 7:23 AM, Scott Voll <[email protected]> wrote: > We have a VTP domain. so they are set to client. > > But I think we are now thinking it's a SFP issue. > > we have had several 2960X's in the lab that will not recognize the SFP > (glc-t) unless we reboot. Then they are recognized and we use them. > Yesterday we had on stack that lost it's primary sfp and looking at the sh > interface it shows no hardware in the SFP slot. But after a reboot it came > back to life. > > I know that putting a GLC-T in a SFP+ slot is overkill, but we have not > moved our new Nexus gear in yet to move to the 10 Gig SR stuff. in the > compatiblity matrix it shows the GLC-T as supported in the spf+ slots of > the 2960X switch. So is this a Bug? Bug scrub comes up with nothing. > > TIA > > Scott > > > On Thu, Mar 6, 2014 at 3:03 AM, Darren O'Connor <[email protected]>wrote: > >> If you think its spanning-tree you really need to check that it is. If it >> happens again make sure you console on and check the spanning-tree state >> before you reboot it. Are you actually running VTP? Did you turn VTP to >> transparent or off? >> >> Thanks >> Darren >> http://www.mellowd.co.uk/ccie >> >> >> >> > Date: Tue, 4 Mar 2014 12:41:13 -0800 >> > From: [email protected] >> > To: [email protected] >> > CC: [email protected] >> > Subject: Re: [c-nsp] 3750E to stack of 2960x..... >> >> > >> > uplinks are Copper SFP's 1 gig. all cisco branded GLC-T. IOS on the >> 2960x >> > is latest 15 ex4 code. >> > >> > I think it might be a spanning tree issue. we found that the legacy >> > devices were still using pvst rather than rapid pvst. >> > >> > we are going to update everything to Rapid pvst and see if we have any >> more >> > issues. Unfortunately I was not able to see the console before someone >> > rebooted them. Looks like the switches were up and working..... just the >> > uplinks were not. No CDP from the 3750E. >> > >> > TIA >> > >> > Scott >> > >> > >> > >> > On Tue, Mar 4, 2014 at 11:44 AM, Blake Pfankuch - Mailing List < >> > [email protected]> wrote: >> > >> > > What kind of uplinks? Fiber or Copper? SFP? 1gig or 10gig? Cisco >> > > Branded SFP? IOS Versions on all affected devices? >> > > >> > > Thanks, >> > > Blake >> > > >> > > -----Original Message----- >> > > From: cisco-nsp [mailto:[email protected]] On Behalf >> Of >> > > Scott Voll >> > > Sent: Tuesday, March 4, 2014 8:19 AM >> > > To: [email protected] >> > > Subject: [c-nsp] 3750E to stack of 2960x..... >> > > >> > > I have a building that has a 3750E at the core and access layer with >> some >> > > new 2960X's >> > > >> > > I have both a stack of two and a single. >> > > >> > > Both have a port channel up to the 3750E. >> > > >> > > Both have now lost there uplinks to the 3750E within two days of being >> > > installed. >> > > >> > > Anyone have any ideas as to what to look for? >> > > >> > > I see nothing in the syslogs of either the 2960x or the 3750E. >> > > >> > > I'm thinking Spanning tree? or VTP? or ?????? >> > > >> > > Areas you would look at? >> > > >> > > TIA >> > > >> > > Scott >> > > _______________________________________________ >> > > cisco-nsp mailing list [email protected] >> > > https://puck.nether.net/mailman/listinfo/cisco-nsp >> > > archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > > >> > _______________________________________________ >> > cisco-nsp mailing list [email protected] >> > https://puck.nether.net/mailman/listinfo/cisco-nsp >> > archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
