Hi Lukasz,When I configured, I had 1 server, 3 clients and this was set up before trunks were configured between the four switches. I bumped up the revision number on the server by adding and removing dummy vlans, and bumping down on the clients by changing to transparent mode and back to client. Nothing cured the issue except a reload. George. > Date: Sun, 28 Oct 2012 22:57:32 +0000 > From: [email protected] > To: [email protected] > Subject: Re: [OSL | CCIE_RS] VTP weirdness > > hm..I just reproduced that very easily. I configured all switches to be > servers but they do not have the same databases. > > > Cat1(config-if)#vtp mode server > Setting device to VTP SERVER mode > Cat1(config)#vtp domain IPexpert > Changing VTP domain name from NULL to IPexpert > Cat1(config)#vtp password ipexpert > Setting device VLAN database password to ipexpert > Cat1(config)#! > > > *Mar 1 01:18:51.585: %SW_VLAN-4-VTP_USER_NOTIFICATION: VTP protocol > user notification: MD5 digest checksum mismatch on receipt of equal > revision summary on trunk: Po13 > > > Cat1(config)#do show vtp status > VTP Version : running VTP1 (VTP2 capable) > Configuration Revision : 0 > Maximum VLANs supported locally : 1005 > Number of existing VLANs : 22 > VTP Operating Mode : Server > VTP Domain Name : IPexpert > VTP Pruning Mode : Disabled > VTP V2 Mode : Disabled > VTP Traps Generation : Disabled > MD5 digest : 0xEE 0x63 0xC2 0xA2 0x17 0x27 0xB9 > 0x49 > *** MD5 digest checksum mismatch on trunk: Po12 *** > *** MD5 digest checksum mismatch on trunk: Po13 *** > > To eliminate this I have added ´dummy´ vlan on one of the switches so > that revision number has increased. All other switches looked on the > higher revision to update its databases. After this all md5 mismatch > disapeared!. > > > Cat4(config)# vlan 99 > Cat4(config-vlan)#exit > Cat4(config)#end > > Cat1(config)#do show vtp status > VTP Version : running VTP1 (VTP2 capable) > Configuration Revision : 1 > Maximum VLANs supported locally : 1005 > Number of existing VLANs : 23 > VTP Operating Mode : Server > VTP Domain Name : IPexpert > VTP Pruning Mode : Disabled > VTP V2 Mode : Disabled > VTP Traps Generation : Disabled > MD5 digest : 0x3B 0x98 0xFB 0xBF 0xDA 0xC6 0xDD > 0x51 > Configuration last modified by 215.12.34.14 at 3-1-93 01:18:53 > Local updater ID is 215.0.0.11 on interface Lo0 (first layer3 interface > found) > > Does that sound like valid solution? > > > Regards, > Lukasz > > > On 2012-10-27 00:59, Marko Milivojevic wrote: > > I think I know what might have happened, but it's hard to reproduce > > without seeing the entire setup. I think your VTP server was trying > > to > > update clients on an STP blocking port. During your reboot, there > > could have been a temporary situation when the STP topology was > > temporarily different (switches not booting at the same time) and > > that > > actually fixed the issue for everyone, even if STP reconverged to the > > original topology. > > > > MD5 errors were probably clients trying to update each other. > > > > -- > > Marko Milivojevic - CCIE #18427 (SP R&S) > > Senior CCIE Instructor - IPexpert > > > > On Fri, Oct 26, 2012 at 5:54 PM, George Leslie > > <[email protected]> wrote: > >> > >> Hi all,This I did. I did a client to transparent to client change on > >> all non-servers to set revision back to the start. I then did a proper > >> domain to dummy domain back to proper domain change. I then added a > >> dummy vlan to server and then removed it, and then repeated this > >> severla times, making sure I exited out of vlan mode each time. It > >> made absolutely no difference. Still got the Md5 errors and all > >> trunks were operational. Nothing I did, other than a reload, cured the > >> issue. The VTP server was up at revision 5, the clients were back at > >> 0. All trunks were operational (sh int trunk), all passwords were the > >> same (sh vtp pass and they had been pasted in from the SAME line in > >> notepad, exactly the same paste). Weird. > >> > From: [email protected] > >>> Date: Fri, 26 Oct 2012 14:40:37 -0700 > >>> To: [email protected] > >>> CC: [email protected] > >>> Subject: Re: [OSL | CCIE_RS] VTP weirdness > >>> > >>> On Fri, Oct 26, 2012 at 2:27 PM, marc abel <[email protected]> > >>> wrote: > >>> > No it means you need to bump the revision number on your server > >>> by either > >>> > creating a vlan or deleting a vlan. Basically if we both have > >>> config > >>> > revision 1 then I can't update you. If I create a vlan I will > >>> have revision > >>> > 2 which will overwrite your revision 1 and then we will be > >>> synced. > >>> > >>> Correct. > >>> > >>> -- > >>> Marko Milivojevic - CCIE #18427 (SP R&S) > >>> Senior CCIE Instructor - IPexpert > >>> _______________________________________________ > >>> For more information regarding industry leading CCIE Lab training, > >>> please visit www.ipexpert.com > >>> > >>> Are you a CCNP or CCIE and looking for a job? Check out > >>> www.PlatinumPlacement.com > >>> > >>> http://onlinestudylist.com/mailman/listinfo/ccie_rs > >> > >> _______________________________________________ > >> For more information regarding industry leading CCIE Lab training, > >> please visit www.ipexpert.com > >> > >> Are you a CCNP or CCIE and looking for a job? Check out > >> www.PlatinumPlacement.com > >> > >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, > > please visit www.ipexpert.com > > > > Are you a CCNP or CCIE and looking for a job? Check out > > www.PlatinumPlacement.com > > > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
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