Re: VTP transparent mode md5 gets changed

Hmm, check your sw2 password. sw2 and sw3/sw4 hashes should match.
Careful with cut and paste with copying a trailing space.
-Carlos

karthik thatikonda @ 15/03/2012 18:22 -0300 dixit:
> Hi,
>
>
> Here is the topology. Please let me know. I tried reload and enabled
> debugs but didn't help. Missing anything here?.
>
>
> sw1 (f0/13-15) -- trunk - sw2(f0/13-15)
>
> sw1 (f0/16-18) -- trunk - sw3 (f0/13-15)
>
> sw1 (f0/19-21) -- trunk - sw4 (f13-15)
>
>
> sw2 is server
>
> sw3 and sw4 are clients
>
> sw1 made vtp mode transparent
>
>
> 1. create vlan X on sw2
>
> 2. it should go to sw1 (transparent) not learn but fwd them to sw3 and sw4
>
>
> Issue:
>
> sw3 and sw4 are not learning vlan X.
>
>
> Trunks are formed. Domain name is matched. Enabled debugs but clients
> are not updating vtp database from server.
>
>
> Outputs:
>
>
> sw2 server
>
> SW2#sh vtp status
> VTP Version : running VTP2
> Configuration Revision : 9
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 22
> VTP Operating Mode : Server
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0x15 0x4D 0x3A 0xF8 0xC5 0x96 0x09 0x49
> Configuration last modified by 155.30.8.8 at 3-2-93 18:38:03
> Local updater ID is 155.30.8.8 on interface Vl8 (lowest numbered VLAN
> interface found)
> SW2#
> SW2#
>
> SW2#sh int f0/13 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/13 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/13 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/13 1,5,7-10,22,43,58,67,79,124-129,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/13 1,5,7-10,22,43,58,67,79,124-129,146
> SW2#sh int f0/14 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/14 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/14 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/14 1,5,7-10,22,43,58,67,79,124-129,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/14 1,5,8-10,22,124-129
>
> SW2#sh int f0/15 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/15 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/15 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/15 1,5,7-10,22,43,58,67,79,124-129,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/15 1,5,8-10,22,124-129
> SW2#
>
> ======
>
> SW1#sh int trunk
>
> Port Mode Encapsulation Status Native vlan
> Fa0/13 desirable 802.1q trunking 1
> Fa0/14 desirable 802.1q trunking 1
> Fa0/15 desirable 802.1q trunking 1
> Fa0/16 desirable 802.1q trunking 1
> Fa0/17 desirable 802.1q trunking 1
> Fa0/18 desirable 802.1q trunking 1
> Fa0/19 desirable 802.1q trunking 1
> Fa0/20 desirable 802.1q trunking 1
> Fa0/21 desirable 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/13 1-4094
> Fa0/14 1-4094
> Fa0/15 1-4094
> Fa0/16 1-4094
> Fa0/17 1-4094
> Fa0/18 1-4094
> Fa0/19 1-4094
> Fa0/20 1-4094
> Fa0/21 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/13 1,7,43,58,67,79,146
> Fa0/14 1,7,43,58,67,79,146
> Fa0/15 1,7,43,58,67,79,146
> Fa0/16 1,7,43,58,67,79,146
> Fa0/17 1,7,43,58,67,79,146
> Fa0/18 1,7,43,58,67,79,146
> Fa0/19 1,7,43,58,67,79,146
> Fa0/20 1,7,43,58,67,79,146
> Fa0/21 1,7,43,58,67,79,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/13 7,43,58,67,79,146
> Fa0/14 7,43,58,67,79,146
> Fa0/15 7,43,58,67,79,146
> Fa0/16 7,43,58,67,79,146
> Fa0/17 7,43,58,67,79,146
> Fa0/18 7,43,58,67,79,146
> Fa0/19 1,7,43,58,67,79,146
> Fa0/20 none
> Fa0/21 none
> SW1#
>
> ======
>
> SW3#sh vtp status
> VTP Version : running VTP2
> Configuration Revision : 5
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 18
> VTP Operating Mode : Client
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xF5 0xDB 0xB5 0xDC 0x36 0xF8 0xF3 0x30
> Configuration last modified by 155.30.8.8 at 3-2-93 18:09:58
> SW3#
> SW3#sh int f0/13 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/13 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/13 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/13 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/13 1,5,7-10,22,43,58,67,79,124-125,146
> SW3#sh int f0/14 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/14 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/14 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/14 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/14 1,5,8-10,22,124-125
> SW3#sh int f0/15 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/15 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/15 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/15 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/15 1,5,8-10,22,124-125
>
> ======
>
> W4#sh vtp status
> VTP Version : running VTP2
> Configuration Revision : 5
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 18
> VTP Operating Mode : Client
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xF5 0xDB 0xB5 0xDC 0x36 0xF8 0xF3 0x30
> Configuration last modified by 155.30.8.8 at 3-2-93 18:09:58
> SW4#
> SW4#sh int f0/13 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/13 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/13 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/13 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/13 1,5,7-10,22,43,58,67,79,124-125,146
> SW4#sh int f0/14 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/14 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/14 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/14 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/14 1,5,7-10,22,43,58,67,79,124-125,146
> SW4#sh int f0/15 tru
>
> Port Mode Encapsulation Status Native vlan
> Fa0/15 auto 802.1q trunking 1
>
> Port Vlans allowed on trunk
> Fa0/15 1-4094
>
> Port Vlans allowed and active in management domain
> Fa0/15 1,5,7-10,22,43,58,67,79,124-125,146
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/15 1,5,7-10,22,43,58,67,79,124-125,146
>
>
>
>
>
> On Thu, Mar 15, 2012 at 1:49 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar
> <mailto:tron_at_huapi.ba.ar>> wrote:
>
> Karthik,
> there are some discussions pointing that a transparent switch in v2
> (or v1) is only transparent when the domains match, or when the
> transparent
> switch has a null domain. Your remark on the MD5 hash is an
> interesting one. May be the transparent switch is just dropping the
> messages (bug ?)
>
> Try clearing the domain to see if that helps...
> -Carlos
>
> karthik thatikonda @ 15/03/2012 14:51 -0300 dixit:
>
> To explain clearly.
>
> trunks are configured between sw1 to sw2, sw3 and sw4.
>
> sw1 is in transparent mode
>
> sw2 is in server mode
>
> sw3 and sw4 are in client mode
>
>
> Once I changed sw1 to transparent md5 on sw1 doesn't match to
> that on sw2.
> Also, since sw2 is server mode, when I created a vlan it supposed to
> propagate to other switches in client mode that is sw3 and sw4.
> But, I
> don't see that happening when sw1 is in transparent mode.
>
>
>
> SW1#sh vtp status
> VTP Version : 2
> Configuration Revision : 0
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 11
> VTP Operating Mode : Transparent
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xC4 0x17 0x67 0xE6 0xB0 0x6D
> 0xF0 0x38
> Configuration last modified by 155.30.37.7 at 3-2-93 18:09:58
> SW1#
> SW1#sh vlan id 126
> VLAN id 126 not found in current VLAN database
> SW1#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> SW1(config)#vtp vers
> SW1(config)#vtp version 2
> VTP mode already in V2.
> SW1(config)#
>
> ===
>
> SW2(config)#vl 126
> SW2(config-vlan)#
> SW2#
> SW2#
> SW2#
> SW2#
> SW2#
> 1d18h: %SYS-5-CONFIG_I: Configured from console by console
> SW2#sh vl id 126
>
> VLAN Name Status Ports
> ---- ------------------------------__-- ---------
> ------------------------------__-
> 126 VLAN0126 active Fa0/13, Fa0/14,
> Fa0/15
>
> VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode
> Trans1
> Trans2
> ---- ----- ---------- ----- ------ ------ -------- ---- --------
> ------
> ------
> 126 enet 100126 1500 - - - - -
> 0 0
>
> Remote SPAN VLAN
> ----------------
> Disabled
>
> Primary Secondary Type Ports
> ------- --------- -----------------
> ------------------------------__------------
>
> SW2#
> SW2#sh vtp status
> VTP Version : 2
> Configuration Revision : 6
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 19
> VTP Operating Mode : Server
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xA0 0x68 0x07 0x2C 0xB9 0xF2
> 0xFA 0x6B
> Configuration last modified by 155.30.8.8 at 3-2-93 18:12:06
> Local updater ID is 155.30.8.8 on interface Vl8 (lowest numbered
> VLAN
> interface found)
> SW2#
> SW2#
> SW2#
>
>
> ====
>
> SW4# sh vl | i ^126
> SW4#sh vl id 126
> VLAN id 126 not found in current VLAN database
> SW4#sh vtp status
> VTP Version : 2
> Configuration Revision : 5
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 18
> VTP Operating Mode : Client
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Enabled
> VTP Traps Generation : Disabled
> MD5 digest : 0xF5 0xDB 0xB5 0xDC 0x36 0xF8
> 0xF3 0x30
> Configuration last modified by 155.30.8.8 at 3-2-93 18:09:58
>
>
> Thanks,
>
>
> Karthik.
>
>
> On Wed, Mar 14, 2012 at 10:31 PM, karthik thatikonda
> <get2explore_at_gmail.com <mailto:get2explore_at_gmail.com>>wrote:
>
> Hi,
>
> When configuring sw2 as transparent mode, seeing that md5 is
> not matched
> on the switches and any creation of vlan on sw1 i.e. server
> is not
> propagation vtp updates to sw3 and sw4. If I change sw2 to
> client, md5
> shows correct on all switches and sw3 and sw4 learn vlan
> created on sw2
> (server). Am I missing anything?. Please, let me know.
>
> SW2#sh vtp status
> VTP Version : 2
> Configuration Revision : 4
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 18
> VTP Operating Mode : Server>>>>>>>>>>>>>>>>>>>>>>>
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Disabled
> VTP Traps Generation : Disabled
> MD5 digest : 0x3C 0xAF 0xD7 0xFB 0xB5
> 0x11 0xB4 0x4B
>
>
> Configuration last modified by 155.30.8.8 at 3-2-93 05:38:01
> Local updater ID is 155.30.8.8 on interface Vl8 (lowest
> numbered VLAN
> interface found)
> SW2#
> SW2#
>
>
>
> SW1#sh vtp status
> VTP Version : 2
> Configuration Revision : 0
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 11
> VTP Operating Mode :
> Transparent>>>>>>>>>>>>>>>>>>>__>>>>>>>>>>
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Disabled
> VTP Traps Generation : Disabled
> MD5 digest : 0x9B 0x27 0x73 0x7F 0xB4
> 0xB1 0xD3 0x29
> ==========>>>>>>>
> Configuration last modified by 155.30.37.7 at 3-2-93 03:10:45
> SW1#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> SW1(config)#vtp mod clie
> Setting device to VTP CLIENT mode.
> SW1(config)#
>
> +++++
>
> AFter changing to client. md5 matches
>
> +++++
>
>
> SW1#sh vtp status
> VTP Version : 2
> Configuration Revision : 4
> Maximum VLANs supported locally : 1005
> Number of existing VLANs : 18
> VTP Operating Mode : Client
> VTP Domain Name : CCIE
> VTP Pruning Mode : Disabled
> VTP V2 Mode : Disabled
> VTP Traps Generation : Disabled
> MD5 digest : 0x3C 0xAF 0xD7 0xFB 0xB5
> 0x11 0xB4 0x4B
> Configuration last modified by 155.30.8.8 at 3-2-93 05:38:01
> Thanks,
>
> Karthik.
>
>
>
> Blogs and organic groups at http://www.ccie.net
>
> ___________________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/__list/CCIELab.html
> <http://www.groupstudy.com/list/CCIELab.html>
>
>
>
>
>
>
>
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>> LW7
> EQI Argentina
>
>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net