Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

How to update VTP client safely

Hi All,

We have in production a VTP server Nexus 7k  and say 30 xVTP clients Cat3550 switches all behaving correctly except one client.

ie it got only say 195 vlans instead of 200 vlans in the server and other clients and it has MD5 number digest different from others

I find a couple of ways from Google such as:

1)

Change the domain of the client and rechange it back to the same domain this should reset the VTP counter

and now the client will get the VLANS from the VLAN server

or

2)

change the switch that needs the update to Transparent mode which resets

the counter to Zero and then put it back into client mode or server mode.

the Client switch is in production and I am worry that it will cause issues.

Any help is very much appreciated.

Thanks

Leq

2 ACCEPTED SOLUTIONS

Accepted Solutions
Purple

Re: How to update VTP client safely

     Did you add vlan 1 to the allowed vlans on both sides of the link , it is a requirement when using nexus in a vtp environment for it to work correctly.I would add it to both sides and bounce the link.See previous  post.

How to update VTP client safely

Hello Glen,

Having not had  little exposure to nexus so wasnt aware of this vtp requirment - Nice to know - Cheers!

Configuring VTP

You can configure VTP on Cisco NX-OS devices.


Note


VLAN 1 is required on all trunk ports used for switch  interconnects if VTP is supported in the network. Disabling VLAN 1 from  any of these ports prevents VTP from functioning properly.

res

Paul

Please don't forget to rate any posts that have been helpful.

Thanks.

Please don't forget to rate any posts that have been helpful. Thanks.
22 REPLIES
Purple

Re: How to update VTP client safely

  that is correct , that should work.  I would also retype the domain name to make sure there is no spaces etc.. at the end of the name .   Make sure the vtp revision on the client is lower than the server so you dont erase the current vtp server setup .

How to update VTP client safely

If you run the comamnd 'show vtp status', does it show the VTP server as the last server it got an update from?

New Member

How to update VTP client safely

Hi John,

yes, it show the VTP server as the last server it got an update from but 2 months behind ie dec 2013.

where at other VTP clients show correct date feb 2014.

just one switch client which has this problem - not sure how it happen.

Leq

How to update VTP client safely

That's pretty strange. Glen is correct.

I would configure the switch to transparent and then back to client. But, as Glen suggested, I would verify once you change the vtp mode to transparent that the Configuration Revision number of the VTP server is higher than what is configured locally on the switch, and you should be fine.

Re:How to update VTP client safely

As the others have said, check the domain name is correct including any leading or trailing spaces. If you are using a password then check that too. Also, check the switch is connected via a trunk, and not access mode.

Kevin Dorrell
Luxembourg


Sent from Cisco Technical Support Android App

New Member

Re:How to update VTP client safely

Hi All,

Changed the VTP to Transparent and revert back to Client

and Configuration Revision revert back to Zero but still not working.

ie the number of VLANS is still not the same as the VLANS in the Server.

Client:

LAS-WFS#sh vtp status

VTP Version                     : running VTP2

Configuration Revision          : 0

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 123

VTP Operating Mode              : Client

VTP Domain Name                 : QNC

VTP Pruning Mode                : Enabled

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Enabled

MD5 digest                      : 0x1F 0xC4 0x32 0xC1 0x02 0x2C 0x2F 0x4B

Configuration last modified by 172.18.100.1 at 7-21-13 23:11:39

Server:

CRT-01# sh vtp status

VTP Status Information

----------------------

VTP Version                     : 2 (capable)

Configuration Revision          : 248

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 128

VTP Operating Mode              : Server

VTP Domain Name                 : QNC

VTP Pruning Mode                : Enabled (Operationally Enabled)

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Disabled

MD5 Digest                      : 0xE1 0xB0 0x64 0x6B 0x79 0x17 0xD1 0x9B

Configuration last modified by 172.17.254.251 at 2-10-14 11:46:21

Local updater ID is 172.17.254.251

VTP version running             : 2

Leq

Re: How to update VTP client safely

Leq,

does a 'show vtp counter' show any errors and are those errors still increasing?

Also, does the number of 'Summary advertisements received' increase in 5-minute intervals?

If so, you could run a 'debug sw-vlan vtp events' in order to gain further information why the Summary Advertises are not accepted (normally Domain- and/or Password mismatch, resulting in 'MD5 digest failing').

If the switch doesn't receive any Summary Advertisements from its neighbor, check that the uplink is running in trunking mode and VTP is enabled on the link (recent IOS versions allow you to disable VTP on a per-link basis by the 'no vtp' command).

HTH

Rolf

Re: How to update VTP client safely

Hello

The domains are the same, whatabout the vtp password?,

sh vtp password

debug sw-vlan vtp events


Also try creating a dummy vlan from the vtp server and see if this initates vtp DB propergation to this client.

vtp server

conf t

vlan xxx

exit

res

Paul

Please don't forget to rate any posts that have been helpful.

Thanks.

Please don't forget to rate any posts that have been helpful. Thanks.
Purple

Re: How to update VTP client safely

  Does the trunk status look right on both sides .Maybe post a sh int trunk from both sides .

New Member

Re: How to update VTP client safely

Hi All,

I have created a dummy VLAN 700 on a Server and can see it update on other Clients but not

on this one.

Please find trunk status from both sides:

fromServer :

Eth3/12       LAS-WFS        connected trunk     full    1000    1000base-SX

from the Client:

LAS-WFS#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Po1         on               802.1q         trunking      111

Port        Vlans allowed on trunk
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,490,501

Port        Vlans allowed and active in management domain
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490

Port        Vlans in spanning tree forwarding state and not pruned
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490
LAS-WFS#

Counters on the Client:

LAS-WFS# sh vtp counters
VTP statistics:
Summary advertisements received    : 0
Subset advertisements received     : 0
Request advertisements received    : 0
Summary advertisements transmitted : 0
Subset advertisements transmitted  : 0
Request advertisements transmitted : 10
Number of config revision errors   : 0
Number of config digest errors     : 0
Number of V1 summary errors        : 0


VTP pruning statistics:

Trunk            Join Transmitted Join Received    Summary advts received from
                                                   non-pruning-capable device
---------------- ---------------- ---------------- ---------------------------
Po1                 318815           0                0

and 10 minutes later:

SOH-LAS-WFS# sh vtp counters
VTP statistics:
Summary advertisements received    : 0
Subset advertisements received     : 0
Request advertisements received    : 0
Summary advertisements transmitted : 0
Subset advertisements transmitted  : 0
Request advertisements transmitted : 20
Number of config revision errors   : 0
Number of config digest errors     : 0
Number of V1 summary errors        : 0


VTP pruning statistics:

Trunk            Join Transmitted Join Received    Summary advts received from
                                                   non-pruning-capable device
---------------- ---------------- ---------------- ---------------------------
Po1                 319241           0                0

Debug result :

SOH-LAS-WFS#
Feb 12 09:49:32.420 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, sta                                                                                                                                                             rt value 0

Feb 12 09:49:32.420 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, sta                                                                                                                                                             rt value 0

Feb 12 09:49:32.420 AEST: VTP LOG RUNTIME: Transmit vtp request on internal trun                                                                                                                                                             k St1

Feb 12 09:49:32.520 AEST: VTP LOG RUNTIME: Advert request received on internal t                                                                                                                                                             runk St1

Feb 12 09:49:37.428 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, sta                                                                                                                                                             rt value 0

Feb 12 09:49:37.428 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, sta                                                                                                                                                             rt value 0

Feb 12 09:49:37.428 AEST: VTP LOG RUNTIME: Transmit vtp request on internal trun                                                                                                                                                             k St1

Feb 12 09:49:37.528 AEST: VTP LOG RUNTIME: Advert request received on internal t                                                                                                                                                             runk St1

Feb 12 09:49:42.436 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, start value 0

Feb 12 09:49:42.436 AEST: VTP LOG RUNTIME: Transmit vtp request, domain QNC, start value 0

Feb 12 09:49:42.436 AEST: VTP LOG RUNTIME: Transmit vtp request on internal trunk St1

Feb 12 09:49:42.537 AEST: VTP LOG RUNTIME: Advert request received on internal trunk St1

I checked both the Domain's Name and Domain 'sPassword and they are all correct & matching both at Server and Client.

Look like the Client can Transmit but not receiving update from Server.

Leq

Hall of Fame Super Blue

How to update VTP client safely

Can you -

1) post the full output of "sh int trunk" from the Nexus

2) pick a client that is working and post a "sh int trunk" from that as well.

Jon

New Member

How to update VTP client safely

Please see output from a working client:

LAS-CONTRACTORS#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Gi1/0/23    on               802.1q         trunking      111
Po1         on               802.1q         trunking      111

Port        Vlans allowed on trunk
Gi1/0/23    102,111,150-151,184,300,302,322,330,340
Po1         1,100,102-106,111-112,114-117,120,135,141-143,150-152,155,160-162,181,184,188,300,302,330,340,401-402,459,490,495

Port        Vlans allowed and active in management domain
Gi1/0/23    102,111,150-151,184,300,302,322,330,340
Po1         1,100,102-106,111-112,114-117,120,135,141-143,150-152,155,160-162,181,184,188,300,302,330,340,401-402,459,490,495

Port        Vlans in spanning tree forwarding state and not pruned
Gi1/0/23    102,111,151,184,300,330
Po1         1,100,102-106,111-112,114-117,135,141-143,150-152,155,160-162,181,184,188,300,302,330,340,401-402,459,490,495

not working Client:

LAS-WFS#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Po1         on               802.1q         trunking      111

Port        Vlans allowed on trunk
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,490,501

Port        Vlans allowed and active in management domain
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490

Port        Vlans in spanning tree forwarding state and not pruned
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490

from Nexus server:

CRT-01# sh int trunk


--------------------------------------------------------------------------------
Port          Native  Status        Port
              Vlan                  Channel
--------------------------------------------------------------------------------
Eth3/1        111     trnk-bndl     Po301
Eth3/2        111     trnk-bndl     Po302
Eth3/3        111     trnk-bndl     Po303
Eth3/4        111     trnk-bndl     Po304
Eth3/5        111     trnk-bndl     Po305
Eth3/6        111     trnk-bndl     Po306
Eth3/7        111     trnk-bndl     Po307
Eth3/8        111     trnk-bndl     Po308
Eth3/9        111     trnk-bndl     Po309
Eth3/10       111     trnk-bndl     Po310
Eth3/11       111     trnk-bndl     Po311
Eth3/12       111     trnk-bndl     Po312
Eth3/13       111     trnk-bndl     Po313
Eth3/14       111     trnk-bndl     Po314
Eth3/15       111     trnk-bndl     Po315
Eth3/16       111     trnk-bndl     Po316
Eth3/17       111     trnk-bndl     Po317
Eth3/18       111     trnk-bndl     Po318

Eth3/19       111     trnk-bndl     Po319
Eth3/22       111     trnk-bndl     Po322
Eth3/23       111     trnk-bndl     Po323
Eth3/24       111     trnk-bndl     Po324
Eth3/25       1       trnk-bndl     Po325
Eth3/27       111     trnk-bndl     Po327
Eth3/29       1       trnk-bndl     Po329
Eth3/30       111     trnk-bndl     Po50
Eth3/31       111     trnk-bndl     Po331
Eth3/32       111     trnk-bndl     Po51
Eth3/34       1       trnk-bndl     Po9
Eth3/36       1       trnk-bndl     Po1
Eth3/38       1       trnk-bndl     Po9
Eth3/40       1       trnk-bndl     Po1
Eth3/44       1       trnk-bndl     Po1
Eth3/48       1       trnk-bndl     Po1
Po1           1       trunking      --
Po9           1       trunking      --
Po50          111     trunking      --
Po51          111     trunking      --
Po301         111     trunking      --
Po302         111     trunking      --
Po303         111     trunking      --

Po304         111     trunking      --
Po305         111     trunking      --
Po306         111     trunking      --
Po307         111     trunking      --
Po308         111     trunking      --
Po309         111     trunking      --
Po310         111     trunking      --
Po311         111     trunking      --
Po312         111     trunking      --
Po313         111     trunking      --
Po314         111     trunking      --
Po315         111     trunking      --
Po316         111     trunking      --
Po317         111     trunking      --
Po318         111     trunking      --
Po319         111     trunking      --
Po322         111     trunking      --
Po323         111     trunking      --
Po324         111     trunking      --
Po325         1       trunking      --
Po327         111     trunking      --
Po329         1       trunking      --
Po331         111     trunking      --

Po1117        111     trunking      --
Po1119        111     trunking      --
Po1121        111     trunking      --
Po1123        111     trunking      --
Eth131/1/17   111     trnk-bndl     Po1117
Eth131/1/18   111     trnk-bndl     Po1117
Eth131/1/19   111     trnk-bndl     Po1119
Eth131/1/20   111     trnk-bndl     Po1119
Eth131/1/21   111     trnk-bndl     Po1121
Eth131/1/22   111     trnk-bndl     Po1121
Eth131/1/23   111     trnk-bndl     Po1123
Eth131/1/24   111     trnk-bndl     Po1123
Eth131/1/25   1       trunking      --

--------------------------------------------------------------------------------
Port          Vlans Allowed on Trunk
--------------------------------------------------------------------------------
Eth3/1        111-112,116-117,150,161-162,184
Eth3/2        105,111-112,116,150,160,184
Eth3/3        104,111-112,114,116,135,141-142,150-151,160,184,189,501-503
Eth3/4        101-103,106,111-112,115-117,120,140-143,150-151,160-162,184,300,30
2,322,330,340,403,438-439,487,490,496
Eth3/5        103-104,111-112,114,116,120,150-151,160,162,184,386,399

Eth3/6        1,101-104,106-107,111-112,114-116,120,141,143,145,150-151,160,184,
188,340,399,401-403,497-498,501-503
Eth3/7        102,104,111,115,135,142,150,160,184,300,401
Eth3/8        101-102,104,111-112,114-116,141-143,150-151,160,184,403,480-490,49
7-498
Eth3/9        102,105,111-112,116-117,142,160-162,184,302
Eth3/10       1,102,106,111-112,114,116,141-142,150-151,160,184,187-188,190,302,
401
Eth3/11       102,111,140,150-151,184,300,302,322,330,340
Eth3/12       102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,49
0,501
Eth3/13       102,111-112,142,144,150,160,184,300,302,322
Eth3/14       1,100,102-106,111-112,114-117,120,135,141-143,150-152,155,160-162,
181,184,188,300,302,330,340,401-402,459,490,495
Eth3/15       102,104,111-112,115-117,142-143,150-151,160-162,178,184,189,300,30
2,340,496
Eth3/16       102,104,111-112,115-117,142-143,150,160-162,178,184,189,300,302,34
0,496
Eth3/17       102,111,115,142,144,160,184,300,302,340
Eth3/18       1,100,102-103,111-112,114,116,143-145,150-151,160-162,184,189,300,
340,392,394,396,398-399,401-402,427,495,497-498
Eth3/19       1,102,106,110-112,114,116-117,141-142,145,150-151,160,184,340,403
Eth3/22       1,111,150,181

Eth3/23       100,111,181-182
Eth3/24       100,111,181-182
Eth3/25       100,111
Eth3/27       1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
415,425,435,445,460,465,550
Eth3/29       100,111
Eth3/30       1-4094
Eth3/31       1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
415,425,435,445,460,465,550
Eth3/32       1-4094
Eth3/34       1,102-103,105-106,111-112,114-116,140-143,150-152,155,160-162,184,
188-189,300,302,322,340,380,399,401-404,409,411-459,465,471-490,492-499,501-503,
610,620,630,640,650
Eth3/36       1-4094
Eth3/38       1,102-103,105-106,111-112,114-116,140-143,150-152,155,160-162,184,
188-189,300,302,322,340,380,399,401-404,409,411-459,465,471-490,492-499,501-503,
610,620,630,640,650
Eth3/40       1-4094
Eth3/44       1-4094
Eth3/48       1-4094
Po1           1-4094
Po9           1,102-103,105-106,111-112,114-116,140-143,150-152,155,160-162,184,
188-189,300,302,322,340,380,399,401-404,409,411-459,465,471-490,492-499,501-503,

610,620,630,640,650
Po50          1-4094
Po51          1-4094
Po301         111-112,116-117,150,161-162,184
Po302         105,111-112,116,150,160,184
Po303         104,111-112,114,116,135,141-142,150-151,160,184,189,501-503
Po304         101-103,106,111-112,115-117,120,140-143,150-151,160-162,184,300,30
2,322,330,340,403,438-439,487,490,496
Po305         103-104,111-112,114,116,120,150-151,160,162,184,386,399
Po306         1,101-104,106-107,111-112,114-116,120,141,143,145,150-151,160,184,
188,340,399,401-403,497-498,501-503
Po307         102,104,111,115,135,142,150,160,184,300,401
Po308         101-102,104,111-112,114-116,141-143,150-151,160,184,403,480-490,49
7-498
Po309         102,105,111-112,116-117,142,160-162,184,302
Po310         1,102,106,111-112,114,116,141-142,150-151,160,184,187-188,190,302,
401
Po311         102,111,140,150-151,184,300,302,322,330,340
Po312         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,49
0,501
Po313         102,111-112,142,144,150,160,184,300,302,322
Po314         1,100,102-106,111-112,114-117,120,135,141-143,150-152,155,160-162,
181,184,188,300,302,330,340,401-402,459,490,495

Po315         102,104,111-112,115-117,142-143,150-151,160-162,178,184,189,300,30
2,340,496
Po316         102,104,111-112,115-117,142-143,150,160-162,178,184,189,300,302,34
0,496
Po317         102,111,115,142,144,160,184,300,302,340
Po318         1,100,102-103,111-112,114,116,143-145,150-151,160-162,184,189,300,
340,392,394,396,398-399,401-402,427,495,497-498
Po319         1,102,106,110-112,114,116-117,141-142,145,150-151,160,184,340,403
Po322         1,111,150,181
Po323         100,111,181-182
Po324         100,111,181-182
Po325         100,111
Po327         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
415,425,435,445,460,465,550
Po329         100,111
Po331         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
415,425,435,445,460,465,550
Po1117        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Po1119        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Po1121        100,111,131-132
Po1123        100,111,131-132
th131/1/17   100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Eth131/1/18   100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Eth131/1/19   100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Eth131/1/20   100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,415,42
5,435,445,460,465,550
Eth131/1/21   100,111,131-132
Eth131/1/22   100,111,131-132
Eth131/1/23   100,111,131-132
Eth131/1/24   100,111,131-132
Eth131/1/25   490,498

--------------------------------------------------------------------------------
Port          Vlans Err-disabled on Trunk
--------------------------------------------------------------------------------
Eth3/1        none
Eth3/2        none
Eth3/3        none
Eth3/4        none
Eth3/5        none
Eth3/6        none

Eth3/7        none
Eth3/8        none
Eth3/9        none
Eth3/10       none
Eth3/11       none
Eth3/12       none
Eth3/13       none
Eth3/14       none
Eth3/15       none
Eth3/16       none
Eth3/17       none
Eth3/18       none
Eth3/19       none
Eth3/22       none
Eth3/23       none
Eth3/24       none
Eth3/25       none
Eth3/27       none
Eth3/29       none
Eth3/30       none
Eth3/31       none
Eth3/32       none
Eth3/34       none

Eth3/36       none
Eth3/38       none
Eth3/40       none
Eth3/44       none
Eth3/48       none
Po1           none
Po9           none
Po50          none
Po51          none
Po301         none
Po302         none
Po303         none
Po304         none
Po305         none
Po306         none
Po307         none
Po308         none
Po309         none
Po310         none
Po311         none
Po312         none
Po313         none
Po314         none

Po315         none
Po316         none
Po317         none
Po318         none
Po319         none
Po322         none
Po323         none
Po324         none
Po325         none
Po327         none
Po329         none
Po331         none
Po1117        none
Po1119        none
Po1121        none
Po1123        none
Eth131/1/17   none
Eth131/1/18   none
Eth131/1/19   none
Eth131/1/20   none
Eth131/1/21   none
Eth131/1/22   none
Eth131/1/23   none

Eth131/1/24   none
Eth131/1/25   none

--------------------------------------------------------------------------------
Port          STP Forwarding
--------------------------------------------------------------------------------
Eth3/1        none
Eth3/2        none
Eth3/3        none
Eth3/4        none
Eth3/5        none
Eth3/6        none
Eth3/7        none
Eth3/8        none
Eth3/9        none
Eth3/10       none
Eth3/11       none
Eth3/12       none
Eth3/13       none
Eth3/14       none
Eth3/15       none
Eth3/16       none
Eth3/17       none

Eth3/18       none
Eth3/19       none
Eth3/22       none
Eth3/23       none
Eth3/24       none
Eth3/25       none
Eth3/27       none
Eth3/29       none
Eth3/30       none
Eth3/31       none
Eth3/32       none
Eth3/34       none
Eth3/36       none
Eth3/38       none
Eth3/40       none
Eth3/44       none
Eth3/48       none
Po1           1,100-112,114-118,120,130-132,135,140-145,150-152,155,160-162,178,
181-182,184,187-190,192-193,198-199,201-205,300,302,310,322,330,340,380,386-389,
391-392,394,396-399,401-404,409,411-412,414,418-419,422-424,427-429,438-439,449-
450,459,465,470,474-475,480-500,550,610,620,630,640,650,1002-1005
Po9           1,102-103,105-106,111-112,114-116,140-143,150-152,155,160-162,184,
188-189,300,302,322,340,380,399,401-404,409,411-412,414,418-419,422-424,427-429,

438-439,449-450,459,465,474-475,480-490,492-499,610,620,630,640,650
Po50          1,100-112,114-118,120,130-132,135,140-145,150-152,155,160-162,178,
181-182,184,187-190,192-193,198-199,201-205,300,302,310,322,330,340,380,386-389,
391-392,394,396-399,401-404,409,411-412,414,418-419,422-424,427-429,438-439,449-
450,459,465,470,474-475,480-500,550,610,620,630,640,650,1002-1005
Po51          1,100-112,114-118,120,130-132,135,140-145,150-152,155,160-162,178,
181-182,184,187-190,192-193,198-199,201-205,300,302,310,322,330,340,380,386-389,
391-392,394,396-399,401-404,409,411-412,414,418-419,422-424,427-429,438-439,449-
450,459,465,470,474-475,480-500,550,610,620,630,640,650,1002-1005
Po301         111-112,116-117,150,161-162,184
Po302         105,111-112,116,150,160,184
Po303         104,111-112,114,116,135,141-142,150-151,160,184,189
Po304         101-103,106,111-112,115-117,120,140-143,150-151,160-162,184,300,30
2,322,330,340,403,438-439,487,490,496
Po305         103-104,111-112,114,116,120,150-151,160,162,184,386,399
Po306         1,101-104,106-107,111-112,114-116,120,141,143,145,150-151,160,184,
188,340,399,401-403,497-498
Po307         102,104,111,115,135,142,150,160,184,300,401
Po308         101-102,104,111-112,114-116,141-143,150-151,160,184,403,480-490,49
7-498
Po309         102,105,111-112,116-117,142,160-162,184,302
Po310         1,102,106,111-112,114,116,141-142,150-151,160,184,187-188,190,302,
401

Po311         102,111,140,150-151,184,300,302,322,330,340
Po312         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,49
0
Po313         102,111-112,142,144,150,160,184,300,302,322
Po314         1,100,102-106,111-112,114-117,120,135,141-143,150-152,155,160-162,
181,184,188,300,302,330,340,401-402,459,490,495
Po315         102,104,111-112,115-117,142-143,150-151,160-162,178,184,189,300,30
2,340,496
Po316         102,104,111-112,115-117,142-143,150,160-162,178,184,189,300,302,34
0,496
Po317         102,111,115,142,144,160,184,300,302,340
Po318         1,100,102-103,111-112,114,116,143-145,150-151,160-162,184,189,300,
340,392,394,396,398-399,401-402,427,495,497-498
Po319         1,102,106,110-112,114,116-117,141-142,145,150-151,160,184,340,403
Po322         1,111,150,181
Po323         100,111,181-182
Po324         100,111,181-182
Po325         100,111
Po327         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
465,550
Po329         100,111
Po331         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
465,550

Po1117        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,465,55
0
Po1119        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,465,55
0
Po1121        100,111,131-132
Po1123        100,111,131-132
Eth131/1/17   none
Eth131/1/18   none
Eth131/1/19   none
Eth131/1/20   none
Eth131/1/21   none
Eth131/1/22   none
Eth131/1/23   none
Eth131/1/24   none
Eth131/1/25   490,498

--------------------------------------------------------------------------------
Port          Vlans in spanning tree forwarding state and not pruned
--------------------------------------------------------------------------------
Eth3/1        none
Eth3/2        none
Eth3/3        none
Eth3/4        none

Eth3/5        none
Eth3/6        none
Eth3/7        none
Eth3/8        none
Eth3/9        none
Eth3/10       none
Eth3/11       none
Eth3/12       none
Eth3/13       none
Eth3/14       none
Eth3/15       none
Eth3/16       none
Eth3/17       none
Eth3/18       none
Eth3/19       none
Eth3/22       none
Eth3/23       none
Eth3/24       none
Eth3/25       none
Eth3/27       none
Eth3/29       none
Eth3/30       none
Eth3/31       none

Eth3/32       none
Eth3/34       none
Eth3/36       none
Eth3/38       none
Eth3/40       none
Eth3/44       none
Eth3/48       none
Po1           1,100-106,111-112,114-117,130-132,135,140-145,150,152,155,160-162,
178,181-182,184,192-193,198,201-205,300,302,322,330,340,380,386-389,391-392,394,
396-399,401-404,409,412,418,423,465,486,492,1002-1005
Po9           1,102-103,105-106,111-112,114-116,140-143,150-152,155,160-162,184,
188-189,300,302,322,340,380,399,401-404,409,411-412,414,418-419,422-424,427-429,
438-439,449-450,459,465,474-475,480-490,492-499,610,620,630,640,650
Po50          1,106,111,150-152,187-188,192,380,386-389,391-392,394,396-399,422,
429,439,449,459,465,481,492,498,610,620,630,640,650,1002-1005
Po51          1,106,111,150-152,187-188,193,380,386-389,391-392,394,396-399,422,
429,439,449,459,465,481,492,498,610,620,630,640,650,1002-1005
Po301         111-112,116-117,150,161-162,184
Po302         105,111-112,116,150,160,184
Po303         104,111-112,114,116,141-142,150-151,160,184
Po304         101-102,111-112,115-116,140,142-143,150,160-162,184,300,340
Po305         103-104,111-112,114,116,150,160,184
Po306         1,101-102,104,106-107,111-112,115-116,141,143,145,150,160,184,340,

399,401-402
Po307         102,104,111,115,142,160,184,300,401
Po308         102,111-112,115-116,143,150,160,184
Po309         102,105,111-112,116-117,142,160-162,184
Po310         1,102,106,111,116,141-142,150,184,302,401
Po311         102,111,140,300,302,322,330,340
Po312         102,104,111-112,115-117,142,150,160,184,300,302
Po313         102,111-112,142,144,160,184,302
Po314         1,100,102-103,111-112,115-117,142-143,150-151,160,184,300,330,340
Po315         102,104,111-112,115-117,142-143,150,160-162,184,189,302,340
Po316         102,111-112,115-117,142-143,150,184
Po317         102,111,115,142,144,160,184
Po318         1,100,102-103,111-112,116,145,151,184,189,340
Po319         1,102,111-112,116-117,141-142,145,150,160,184,340
Po322         1,111,150,181
Po323         100,111,182
Po324         100,111,181-182
Po325         100,111
Po327         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
465,550
Po329         100,111
Po331         1,100,102-103,111-112,130,143-144,160,181-182,201-205,330,404,409,
465,550

Po1117        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,465,55
0
Po1119        100,102-103,112,130,143-144,160,181-182,201-205,330,404,409,465,55
0
Po1121        100,111,131-132
Po1123        100,111,131-132
Eth131/1/17   none
Eth131/1/18   none
Eth131/1/19   none
Eth131/1/20   none
Eth131/1/21   none
Eth131/1/22   none
Eth131/1/23   none
Eth131/1/24   none
Eth131/1/25   490,498

--------------------------------------------------------------------------------
Port          Vlans Forwarding on FabricPath
--------------------------------------------------------------------------------
Eth3/1        none
Eth3/2        none
Eth3/3        none
Eth3/4        none

Eth3/5        none
Eth3/6        none
Eth3/7        none
Eth3/8        none
Eth3/9        none
Eth3/10       none
Eth3/11       none
Eth3/12       none
Eth3/13       none
Eth3/14       none
Eth3/15       none
Eth3/16       none
Eth3/17       none
Eth3/18       none
Eth3/19       none
Eth3/22       none
Eth3/23       none
Eth3/24       none
Eth3/25       none
Eth3/27       none
Eth3/29       none
Eth3/30       none
Eth3/31       none

Eth3/32       none
Eth3/34       none
Eth3/36       none
Eth3/38       none
Eth3/40       none
Eth3/44       none
Eth3/48       none
Po1           none
Po9           none
Po50          none
Po51          none
Po301         none
Po302         none
Po303         none
Po304         none
Po305         none
Po306         none
Po307         none
Po308         none
Po309         none
Po310         none
Po311         none
Po312         none

Po313         none
Po314         none
Po315         none
Po316         none
Po317         none
Po318         none
Po319         none
Po322         none
Po323         none
Po324         none
Po325         none
Po327         none
Po329         none
Po331         none
Po1117        none
Po1119        none
Po1121        none
Po1123        none
Eth131/1/17   none
Eth131/1/18   none
Eth131/1/19   none
Eth131/1/20   none
Eth131/1/21   none

Eth131/1/22   none
Eth131/1/23   none
Eth131/1/24   none
Eth131/1/25   none

Cheers,

Leq

Purple

How to update VTP client safely

  What port channel and port is feeding the client that is not working ?   Post a show run int port-ch X  from the nexus side. 

New Member

How to update VTP client safely

from the Nexus:

CRT-01# sh run interface port-channel 312

!Command: show running-config interface port-channel312
!Time: Wed Feb 12 13:44:59 2014

version 6.1(3)

interface port-channel312
  description LAS-WFS
  switchport
  switchport mode trunk
  switchport trunk native vlan 111
  switchport trunk allowed vlan 102,104,111-112,114-117,142-143
  switchport trunk allowed vlan add 150-151,160,184,300,302,340,380
  switchport trunk allowed vlan add 490,501
  spanning-tree port type normal
  vpc 312

from the Client (not working)

LAS-WFS#sh interfaces trunk

Port        Mode             Encapsulation  Status        Native vlan
Po1         on               802.1q         trunking      111

Port        Vlans allowed on trunk
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,380,490,501

Port        Vlans allowed and active in management domain
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490

Port        Vlans in spanning tree forwarding state and not pruned
Po1         102,104,111-112,114-117,142-143,150-151,160,184,300,302,340,490

Leq

Purple

Re: How to update VTP client safely

  Does the nexus indicate any kind of problem with that particular vpc.  Nexus does a lot of compatability checking on a number of parameters when you are using a VPC.   Is there 2 uplinks to 2 different Nexus boxes ?   Are you using LACP to form the channels ?  Also check this ,  something I didn't know until I looked it up on nexus .  don't see it allowed on either side. kind of contrary to what they usually tell you where they do not want vlaN 1 propagated all over . Notice above where you show the one that works has vlan 1 in the trunk and the one that does not does not have vlan 1 in the trunk . If none of these work I'm out of ideas. 

Note


VLAN  1 is required on all trunk ports used for switch interconnects if VTP  is supported in the network. Disabling VLAN 1 from any of these ports  prevents VTP from functioning properly.


New Member

How to update VTP client safely

One thing that looks odd from your output is the date on the client switch - several months off from the VTP server.  Not real sure how critical that is but I have seen plenty of weird issues when NTP wasn't working correctly - usually when there is some kind of replication like VTP.  Are the other client switches working with their time set like the problem switch?

Bill

How to update VTP client safely

Hello

Try renaming the vlan.dat file on the switch and letting it creeate another

Client vtp switch:

dir flash:vlan.dat

rename flash:vlan.dat vlan.datOLD

Server vtp switch

Create dummy vlan

vlan xx

exit

Client vtp switch

sh vlan brief

:

res

Paul

Please don't forget to rate any posts that have been helpful.

Thanks.

Please don't forget to rate any posts that have been helpful. Thanks.
New Member

How to update VTP client safely

Hi Paul,

Tried rename VLAN.dat as suggested but make no different.

Please see output from a working switch:

LAS-SDESK#sh vtp status

VTP Version                     : running VTP2

Configuration Revision          : 254

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 128

VTP Operating Mode              : Client

VTP Domain Name                 : QNC

VTP Pruning Mode                : Enabled

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Enabled

MD5 digest                      : 0xE1 0x9B 0xD1 0xD1 0x82 0x1F 0x3B 0xE2

Configuration last modified by 172.17.254.251 at 2-13-14 13:11:12

The IP address 172.17.254.251 is the loopback address of the Server Nexus

Output from a non-working client:

LAS-WFS#sh vtp status

VTP Version                     : running VTP2

Configuration Revision          : 0

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 123

VTP Operating Mode              : Client

VTP Domain Name                 : QNC

VTP Pruning Mode                : Enabled

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Enabled

MD5 digest                      : 0x1F 0xC4 0x32 0xC1 0x02 0x2C 0x2F 0x4B

Configuration last modified by 172.18.100.1 at 7-21-13 23:11:39

The IP address 172.18.100.1 is the VLAN 100  address of the Core Nexus another IP address.

so HOW do we tell the Client to point to the Correct Server IP address which is 172.17.254.251

Thanks

Leq

Purple

Re: How to update VTP client safely

     Did you add vlan 1 to the allowed vlans on both sides of the link , it is a requirement when using nexus in a vtp environment for it to work correctly.I would add it to both sides and bounce the link.See previous  post.

How to update VTP client safely

Hello Glen,

Having not had  little exposure to nexus so wasnt aware of this vtp requirment - Nice to know - Cheers!

Configuring VTP

You can configure VTP on Cisco NX-OS devices.


Note


VLAN 1 is required on all trunk ports used for switch  interconnects if VTP is supported in the network. Disabling VLAN 1 from  any of these ports prevents VTP from functioning properly.

res

Paul

Please don't forget to rate any posts that have been helpful.

Thanks.

Please don't forget to rate any posts that have been helpful. Thanks.
New Member

Re: How to update VTP client safely

Hi Glen,

You are star !!!!

Thank you so much - it works perfectly the minutues I add VLAN 1 in the Client.

All VTP are flowing again.

Thanks so much all - very much appreciated.

Leq

Re:How to update VTP client safely

That is really interesting Glen. On Catalysts, I have often trimmed VLAN 1 off the trunks (and also my "dummy" native VLAN) with no ill effect on the VTP. But I have never so on the Nexus. So thanks, you have probably saved me from problems in the future.

It reminds me of the old CatOS switches, which if the native VLAN got pruned from a trunk then the control protocols would stop working.

Kevin Dorrell
Luxembourg



Sent from Cisco Technical Support Android App

1079
Views
0
Helpful
22
Replies
CreatePlease to create content