No VTP update received on WS-C3508G-XL-EN from WS-C3508G-XL-EN

[Viconsul]

Hello all,

Recently, I added a new vlan to our existing network, making the total number of vlan 28, everything works okay except on one switch (model WS-C3508G-XL-EN ).
It refused to get the new vlan update and it is stuck to 27 vlans.
I then made the following checks to find out what was wrong.
I checked that it is part of our vtp domain.
I checked and reset the vtp password.
I checked to ensure switch was setup as a client.
I checked that it was running same vtp version.
I checked the configuration revision number was not higher than the vtp server (model WS-C3750G-12S ).
VTP version 2 mode is disabled across the entire network.
I moved the switch to transparent mode and back to client
Still no joy so I deleted the vlan.dat and moved the switch to transparent mode and added new vlan manually and all works okay.
But I need to get this working as a client rather than manually updating the vlan changes.
Any idea what could be wrong?

Many thanks

Viconsul

 

[Viconsul]

Sorry the title should be
No VTP update received on WS-C3508G-XL-EN from WS-C3750G-12S

 

[VinceWhirlwind]

Do us a
sh vtp status
will you?

 

[Viconsul]

Below is the vtp status on both the vtp server and the client.

C3750G-12S#sh vtp stat
VTP Version : 2
Configuration Revision : 20
Maximum VLANs supported locally : 1005
Number of existing VLANs : 28
VTP Operating Mode : Server
VTP Domain Name : HQVTP
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x8D 0xDB 0x96 0x3D 0x9E 0xE3 0x4C 0x31
Configuration last modified by 10.13.20.1 at 10-31-08 14:15:42
Local updater ID is 172.16.20.1 on interface Vl51 (lowest numbered VLAN interface found)
C3750G-12S#


C3508G-XL#sh vtp stat
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 254
Number of existing VLANs : 11
VTP Operating Mode : Client
VTP Domain Name : HQVTP
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0xD8 0xA5 0x36 0x6A 0x05 0x97 0x1D 0x56
Configuration last modified by 172.16.48.106 at 10-24-08 11:50:59
C3508G-XL#

HTH

Viconsul

 

[VinceWhirlwind]

Physically, what other devices sit between these two switches?

 

[Viconsul]

The two switches are directly connected to one another.

 

[burtsbees]

It's the LOWER configuration revision number that counts, not the higher one. The higher one gets ignored.

Burt

 

[BuckWeet]

Sometimes you need to trigger a VTP update to make them sync up.. Also make sure the password is the same.

Go into the VTP server and add a vlan, then exit. It should sync up after this.. Go in and delete the vlan you just created.


BuckWeet

 

[Viconsul]

Burt,

The revision number on the vtp server goes up in increments of one everytime a change is made to the vlan.dat on the vtp server and this is what the clients in the same vtp domain use as a check point to update their vlan database.
I have also carried out your suggestion of forcing a vlan update but it still won't sync. VTP password is the same on but switches.

 

[BuckWeet]

You do have a trunk between the two switches?

Could you show the config of the trunks?

 

[Viconsul]

There are 8 switches on the network and they all have a trunk to the C3750 switch and all vlans are allowed out of the trunks from the C3750 switch. They all work fine with the exception of this C3508G switch. I will get the trunk config when I get back to the office.

 

[burtsbees]

Sorry guys---I must have been thinking of root bridge priorities...
For kicks, have you tried deleting a vlan from the 3508G to see if the new vlan then gets added, like it is limited for some reason? Most other switches support 1005, but that is only 256 locally, so maybe the number of vtp updated vlans is limited? Curious...can you put CatOS on a 3508G?

Burt

 

[BuckWeet]

Cat 3508's are IOS only.. I would try from scratch again as burtsbees said.

The MD5 checksum doesn't match, so some paramter is incorrect. I believe it should match on every switch.. Someone correct me if I'm wrong please.

BuckWeet

 

[burtsbees]

Can you post a sh run from the 3508? There are only 11 vlans in that switch...I'm thinking that maybe you could be pruning?

Burt

 

[VinceWhirlwind]

The sh vtp stat shows he's not pruning.

Maybe some more info via a sh ver might help?

 

[vipergg]

Also need the configs from the trunk links. I would default the switch including deleting vlan.dat . Add the vtp password and thats it , it should automatically pick up the vtp domain by itself if its going to work .

 

[Viconsul]

Vipergg, I have done exactly what you suggested, i.e deleting vlan.dat, resetting switch to default, but to no avail.

 

[Viconsul]

Below is the show version on the client switch (C3508G-XL)

C3508G-XL#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)WC17, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Tue 13-Feb-07 15:04 by antonino
Image text-base: 0x00003000, data-base: 0x00352924
ROM: Bootstrap program is C3500XL boot loader
C3508G-XL uptime is 3 weeks, 1 day, 12 hours, 49 minutes
System returned to ROM by reload
System restarted at 08:47:04 UTC Fri Oct 24 2008
System image file is "flash:c3500xl-c3h2s-mz.120-5.WC17.bin"
cisco WS-C3508G-XL (PowerPC403) processor (revision 0x01) with 8192K/1024K bytes of memory.
Processor board ID FAA0503L0P5, with hardware revision 0x01
Last reset from warm-reset
Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
8 Gigabit Ethernet/IEEE 802.3 interface(s)
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:04D:29:7D:80
Motherboard assembly number: 73-3985-07
Power supply part number: 34-0940-01
Motherboard serial number: FAA050309QL
Power supply serial number: APQ04500145
Model revision number: A0
Motherboard revision number: B0
Model number: WS-C3508G-XL-EN
System serial number: FAA0503L0P5
Configuration register is 0xF

 

[vipergg]

Can you post the trunk configs on both sides from the links ???

 

[Viconsul]

Below is the trunk port info from both switches.

C3750G-12S#sh int gi4/0/48
GigabitEthernet4/0/48 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0015.6254.e7b0 (bia 0015.6254.e7b0)
Description: Link to C3508G-XL G0/7
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:26, output 00:00:10, output hang never
Last clearing of "show interface" counters 23w4d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 1000 bits/sec, 8 packets/sec
9220489 packets input, 1036714476 bytes, 0 no buffer
Received 1749176 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1739029 multicast, 0 pause input
0 input packets with dribble condition detected
439811701 packets output, 2138784578 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
C3750G-12S#


C3508G-XL#sh int gi0/7
GigabitEthernet0/7 is up, line protocol is up
Hardware is Gigabit Ethernet, address is 0004.dd29.7d87 (bia 0004.dd29.7d87)
Description: Link to C3750G-12S Port Gi4/0/48
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex (Full), 1000Mb/s, media type is T
output flow-control is off, input flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
1000BaseT module in GBIC slot.
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 18000 bits/sec, 25 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
62946089 packets input, 1619823847 bytes, 0 no buffer
Received 62116832 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 41334718 multicast, 0 pause input
1506256 packets output, 126179982 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
C3508G-XL#