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
