It's exactly this ! cat4k stops processing ARP, IGMP and other control protocols
CSCuj73571 https://tools.cisco.com/bugsearch/bug/cscuj73571 Unbelievable, this was marked with severity 2 ?!!! Thanks. Regards, Antonio Soares, CCIE #18473 (RS/SP) amsoa...@netcabo.pt http://www.ccie18473.net -----Original Message----- From: Dan Brisson [mailto:dbris...@uvm.edu] Sent: sábado, 12 de Abril de 2014 13:36 To: Antonio Soares; cisco-nsp@puck.nether.net Subject: Re: [c-nsp] Strange Issue with 3560X and 4500X Ah, didn't think I had it or I would have included it in the first email, but turns out I do have it: Csuj73571 Hope that helps! -dan Dan Brisson Network Engineer University of Vermont (Ph) 802.656.8111 dbris...@uvm.edu On 4/12/14, 8:22 AM, Antonio Soares wrote: > Great, thanks for the feedback. Are you able to tell me the bug id ? > > > Regards, > > Antonio Soares, CCIE #18473 (RS/SP) > amsoa...@netcabo.pt > http://www.ccie18473.net > > > > -----Original Message----- > From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf > Of Dan Brisson > Sent: sábado, 12 de Abril de 2014 13:15 > To: cisco-nsp@puck.nether.net > Subject: Re: [c-nsp] Strange Issue with 3560X and 4500X > > We had a problem about 6 months ago when we installed our first pair > of 4500Xs where they could reach certain hosts but not reach other > hosts on the same subnet. TAC said it was a bug that has since been > fixed. We are on this version now and the problem has been resolved: > cat4500e-universalk9.SPA.03.05.01.E.152-1.E1.bin > > -dan > > > Dan Brisson > Network Engineer > University of Vermont > dbris...@uvm.edu > > On 4/12/14, 7:03 AM, Antonio Soares wrote: >> Group, >> >> We found that all the 3560-Xs connected to the secondary 4500-X >> stopped responding to SNMP queries at the same exact minute which >> leads to the common denominator being the 4500-X. >> >> Anyone has experienced strange things with 4500-Xs running 3.5.0E / >> 15.2(1)E ? >> >> >> Thanks. >> >> Regards, >> >> Antonio Soares, CCIE #18473 (RS/SP) >> amsoa...@netcabo.pt >> http://www.ccie18473.net >> >> >> -----Original Message----- >> From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf >> Of Antonio Soares >> Sent: sexta-feira, 11 de Abril de 2014 14:09 >> To: cisco-nsp@puck.nether.net >> Subject: [c-nsp] Strange Issue with 3560X and 4500X >> >> Group, >> >> >> >> This is one of the most weird things I saw these last years. Imagine >> a network where you have two 4500-X in the Core (no VSS) and a few >> 3560-X pairs forming squares between the 4500-Xs and the 3560-Xs. >> >> >> >> One of the 4500-X is the STP root for all Vlans, the other 4500-X is >> the backup STP root for all Vlans as well. >> >> >> >> Between the 4500-Xs and the 3560-Xs I have LACP, CDP and UDLD running. >> >> >> >> The issue: >> >> >> >> The network was up and running well the first 4 days after installation. >> >> >> >> More or less on the fifth day, all the 3560-Xs connected to the >> secondary 4500-X, stopped responding to ping requests from anywhere >> in the network, even from the directly attached neighbors, the two >> 4500-Xs and the other 3560-X. A reboot to the 3560-X didnt solve >> the problem. UDLD, CDP and LACP didnt fail at all. >> >> >> >> In order to get normal access to the 3560-X, I had to shutdown the >> uplink from the 3560-X to the 4500-X. >> >> >> >> I have a simple diagram here: >> >> >> >> http://ccie18473.net/issue-sw2.jpg >> >> >> >> What seems to happen is that broadcasts (ARP, DHCP) and multicast >> start to fail somewhere in time. >> >> >> >> It must be a very severe 4500X or 3560X bug but I wasnt able to >> find anything. The most important information: >> >> >> >> WS-C4500X-32, cat4500e-universalk9.SPA.03.05.00.E.152-1.E.bin >> >> >> >> WS-C3560X-48P, c3560e-universalk9-mz.150-2.SE.bin, the uplink is >> fiber optic, the C3KX-NM-10G is used, between the 3560Xs I have >> copper >> >> >> >> Unfortunately I cant reload/upgrade the 4500X-s or the 3560X-s >> >> >> >> Any pointers are more than welcome. >> >> >> >> >> >> >> >> Thanks. >> >> >> >> Regards, >> >> >> >> Antonio Soares, CCIE #18473 (RS/SP) >> amsoa...@netcabo.pt >> >> http://www.ccie18473.net <http://www.ccie18473.net/> >> >> >> >> >> >> _______________________________________________ >> cisco-nsp mailing list cisco-nsp@puck.nether.net >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> >> >> _______________________________________________ >> cisco-nsp mailing list cisco-nsp@puck.nether.net >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/