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VTP type-2 configuration incompatible

beausoleilb1
Level 1
Level 1

‎08-11-2011 12:13 PM - edited ‎03-07-2019 01:40 AM

I am looking for some assistance in the reason why 'Type-2 consistency status' is failed for the reason of 'VTP type-2 configuration incompatible'.  I cannot find much of a reason in the logs or Nexus docs as to what is the cause.

Hardware: Nexus 7010

Kickstart: version 5.2(1)

System:    version 5.2(1)

Below is some output for reference.  I cleaned up the consistency output a tad to make it a bit easier to read.  Thanks in advance for any advise.

N7K1# show vpc

vPC domain id                     : 999

Peer status                       : peer adjacency formed ok     

vPC keep-alive status             : peer is alive                

Configuration consistency status  : success

Per-vlan consistency status       : success                      

Type-2 consistency status         : failed 

Type-2 inconsistency reason       : VTP type-2 configuration incompatible

vPC role                          : primary                      

Number of vPCs configured         : 4  

Peer Gateway                      : Enabled

Peer gateway excluded VLANs       : -

Dual-active excluded VLANs        : -

Graceful Consistency Check        : Enabled

Auto-recovery status              : Disabled

N7K1# show vpc consistency-parameters global

Name                        Type  Local Value            Peer Value            

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

STP Mode                    1     Rapid-PVST             Rapid-PVST           

STP Disabled                1     None                   None                 

STP MST Region Name         1     ""                     ""                   

STP MST Region Revision     1     0                      0                    

STP MST Region Instance to  1                                                 

VLAN Mapping                                                                 

STP Loopguard               1     Enabled                Enabled              

STP Bridge Assurance        1     Enabled                Enabled              

STP Port Type, Edge         1     Normal, Disabled,      Normal, Disabled,    

BPDUFilter, Edge BPDUGuard        Enabled                Enabled              

STP MST Simulate PVST       1     Enabled                Enabled              

VTP domain                  2     Core                   Core                 

VTP version                 2     2                      2                    

VTP mode                    2     Server                 Server               

VTP password                2     <omitted>                <omitted>              

VTP pruning status          2     Disabled               Disabled             

Interface-vlan admin up     2     <matching list>   <matching list>

Interface-vlan routing      2     <matching list>   <matching list>

capability                         

Allowed VLANs               -     <matching list>   <matching list>

Local suspended VLANs       -     -                      -                    

Labels:
0 Helpful
14 Replies 14

andtoth
Level 4
Level 4

‎08-13-2011 04:56 PM

Hi,

Could you please share the output of 'show vtp status' as well from both switches?

Did you try removing and reapplying the VTP configuration to see if it recovers it?

Thanks,

Andras

beausoleilb1
Level 1
Level 1
In response to andtoth

‎08-15-2011 05:07 AM

Andras,

ENPN7K1-Core# show vtp status

VTP Status Information

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

VTP Version                     : 2 (capable)

Configuration Revision          : 32

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 29

VTP Operating Mode              : Server

VTP Domain Name                 : Core

VTP Pruning Mode                : Enabled (Operationally Enabled)

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Disabled

MD5 Digest                      : 0xCC 0xA6 0x66 0x3E 0x2E 0x02 0xDB 0x15

Configuration last modified by 10.64.31.253 at 8-12-11 14:59:57

Local updater ID is 10.64.31.253

VTP version running             : 2

ENPN7K2-Core# show vtp status

VTP Status Information

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

VTP Version                     : 2 (capable)

Configuration Revision          : 32

Maximum VLANs supported locally : 1005

Number of existing VLANs        : 29

VTP Operating Mode              : Server

VTP Domain Name                 : Core

VTP Pruning Mode                : Enabled (Operationally Enabled)

VTP V2 Mode                     : Enabled

VTP Traps Generation            : Disabled

MD5 Digest                      : 0xCC 0xA6 0x66 0x3E 0x2E 0x02 0xDB 0x15

Configuration last modified by 10.64.31.253 at 8-12-11 14:59:57

Local updater ID is 10.64.31.252

VTP version running             : 2

Thanks for following up.

Brian

0 Helpful

andtoth
Level 4
Level 4
In response to beausoleilb1

‎08-15-2011 03:59 PM

Hi Brian,

Thanks for your reply. I don't see any difference in the outputs. I would suggest to try the following steps.

- Try changing VTP mode to server and reapplying the VTP Domain configuration, then changing back to transparent mode.

- If the above step does not help, try disabling VTP feature entirely, by using ‘no feature vtp’ and re-enabling it with ‘feature vtp’. Afterwards, reapply your VTP configuration.

This seems to be a cosmetic issue only, and hopefully the above steps will help to recover from this.

Best regards,

Andras

islam_maher
Level 1
Level 1
In response to andtoth

‎07-12-2020 03:53 PM

Thank you very much
0 Helpful

dtran
Level 6
Level 6
In response to beausoleilb1

‎09-30-2011 04:33 PM

Hi Beausoleilb1,

I am running the exact same version of NX-OS (5.2.1) you're running and I am running into the exact same issue. Were you able to resolve your issue ? Could you tell what you did ?

Thanks !!

D.

0 Helpful

Oleksandr Nesterov
Cisco Employee
Cisco Employee
In response to dtran

‎01-06-2012 02:50 AM

Hi D

were this issue observed before upgrade to 5.2.1?

Aso have you noticed whether this inconsictency causes any issues with traffic forwarding?

Have you recently rebooted your chassis (not sup reload)?

Have you tried action list described by Andras earlier?

Regards,

Alex

0 Helpful

Khoa Pham
Level 1
Level 1
In response to Oleksandr Nesterov

‎04-25-2012 12:27 PM

I am running 6.0 (2) and have exact same problem.

#show vtp status will show everything is fine.

Im running VTP Server mode on the NX pair

0 Helpful

Oleksandr Nesterov
Cisco Employee
Cisco Employee
In response to Khoa Pham

‎04-25-2012 02:59 PM

Hi Khoa

Please try to perform actions described by Andras earlier.

In most casaes they resolve the issue.

Regards,

Alex

Khoa Pham
Level 1
Level 1
In response to Oleksandr Nesterov

‎04-27-2012 08:52 AM

I know doing that would fix it. Also restarting the VDC also fix it.

But it's a bug. I want to know if Cisco has a plan to fix it ? Im running the lastest OS version

0 Helpful

Oleksandr Nesterov
Cisco Employee
Cisco Employee
In response to Khoa Pham

‎04-27-2012 09:11 AM

Hi Khoa

As you can see, such behavior is observed in different nx-os versions which can be caused by different reasons - small missprogramming, or software bug.

So if you need to find a root cause in your particular case I would suggest you ot open a TAC case.

Have a great holidays Khoa

Alex

iceteanolemon
Level 5
Level 5

‎08-10-2012 11:05 AM

I would like to add that I am setting a new pair of Nexus 7010's up and am having the same symptom.

RPP-DCA-CR001# show vpc brief
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 1  
Peer status                       : peer adjacency formed ok     
vPC keep-alive status             : peer is alive                
Configuration consistency status  : success
Per-vlan consistency status       : success                      
Type-2 consistency status         : failed 
Type-2 inconsistency reason       : VTP type-2 configuration incompatible
vPC role                          : secondary                    
Number of vPCs configured         : 1  
Peer Gateway                      : Enabled
Peer gateway excluded VLANs       : -
Dual-active excluded VLANs        : -
Graceful Consistency Check        : Enabled
Auto-recovery status              : Enabled (timeout = 240 seconds)

vPC Peer-link status
---------------------------------------------------------------------
id   Port   Status Active vlans   
--   ----   ------ --------------------------------------------------
1    Po1    up     1,437                                                 

vPC status
----------------------------------------------------------------------
id   Port   Status Consistency Reason                     Active vlans
--   ----   ------ ----------- ------                     ------------
37   Po37   up     success     success                    1,437          

RPP-DCA-CR001# show vpc consistency-parameters global

    Legend:
        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value            
-------------               ----  ---------------------- -----------------------
STP Mode                    1     Rapid-PVST             Rapid-PVST           
STP Disabled                1     None                   None                 
STP MST Region Name         1     ""                     ""                   
STP MST Region Revision     1     0                      0                    
STP MST Region Instance to  1                                                 
VLAN Mapping                                                                 
STP Loopguard               1     Enabled                Enabled              
STP Bridge Assurance        1     Enabled                Enabled              
STP Port Type, Edge         1     Normal, Disabled,      Normal, Disabled,    
BPDUFilter, Edge BPDUGuard        Enabled                Enabled              
STP MST Simulate PVST       1     Enabled                Enabled              
VTP domain                  2     royalVTP               royalVTP             
VTP version                 2     2                      2                    
VTP mode                    2     Server                 Server               
VTP password                2     RoyalVTP9988           RoyalVTP9988         
VTP pruning status          2     Enabled                Enabled              
Interface-vlan admin up     2     1,437                  1,437                
Interface-vlan routing      2     1,437                  1,437                
capability                                                                    
Allowed VLANs               -     1,437                  1,437                
Local suspended VLANs       -     -                      -                    


RPP-DCB-CR001# show vpc consistency-parameters global

    Legend:
        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value            
-------------               ----  ---------------------- -----------------------
STP Mode                    1     Rapid-PVST             Rapid-PVST           
STP Disabled                1     None                   None                 
STP MST Region Name         1     ""                     ""                   
STP MST Region Revision     1     0                      0                    
STP MST Region Instance to  1                                                 
VLAN Mapping                                                                 
STP Loopguard               1     Enabled                Enabled              
STP Bridge Assurance        1     Enabled                Enabled              
STP Port Type, Edge         1     Normal, Disabled,      Normal, Disabled,    
BPDUFilter, Edge BPDUGuard        Enabled                Enabled              
STP MST Simulate PVST       1     Enabled                Enabled              
VTP domain                  2     royalVTP               royalVTP             
VTP version                 2     2                      2                    
VTP mode                    2     Server                 Server               
VTP password                2     RoyalVTP9988           RoyalVTP9988         
VTP pruning status          2     Enabled                Enabled              
Interface-vlan admin up     2     1,437                  1,437                
Interface-vlan routing      2     1,437                  1,437                
capability                                                                    
Allowed VLANs               -     1,437                  1,437                
Local suspended VLANs       -     -                      -                    
RPP-DCB-CR001# show vpc brief
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 1  
Peer status                       : peer adjacency formed ok     
vPC keep-alive status             : peer is alive                
Configuration consistency status  : success
Per-vlan consistency status       : success                      
Type-2 consistency status         : failed 
Type-2 inconsistency reason       : VTP type-2 configuration incompatible
vPC role                          : primary                      
Number of vPCs configured         : 1  
Peer Gateway                      : Enabled
Peer gateway excluded VLANs       : -
Dual-active excluded VLANs        : -
Graceful Consistency Check        : Enabled
Auto-recovery status              : Enabled (timeout = 240 seconds)

vPC Peer-link status
---------------------------------------------------------------------
id   Port   Status Active vlans   
--   ----   ------ --------------------------------------------------
1    Po1    up     1,437                                                 

vPC status
----------------------------------------------------------------------
id   Port   Status Consistency Reason                     Active vlans
--   ----   ------ ----------- ------                     ------------
37   Po37   down*  success     success                    -             

Both cores are running same versions of code ....

Software

  BIOS:      version 3.22.0

  kickstart: version 6.0(3)

  system:    version 6.0(3)
Software
  BIOS:      version 3.22.0
  kickstart: version 6.0(3)
  system:    version 6.0(3)

0 Helpful

tarek.krull
Level 1
Level 1

‎11-15-2012 11:15 PM

Hi,

just ran into the same problem....

I've got two pairs of N5548UP running 5.2(1)N1(1), each pair in different DCs. I think the only solution to that is setting both Nexus to the same mode. (Server/Server, Client/Client etc.). Everytime when I switch, it comes up with VTP inconsistency.

Btw. does someone know if version 3 will be supported in near future? I don't want to run new customer network in version 2 :-).

Cheers,

Tarek

0 Helpful

emeurantcisco
Level 1
Level 1
In response to tarek.krull

‎04-05-2017 02:36 AM

Cisco docs state that vpc pairs must have the same VTP config (client or server for ex) :

  • When deployed with vPC, both vPC switches must be configured identically. vPC performs a Type 2 consistency check for VTP configuration parameters.

in :

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/layer2/521_n1_2/b_5k_Layer2_Config_521N12/b_5k_Layer2_Config_521N12_chapter_011.html

0 Helpful

Donald_Morgan
Level 4
Level 4

‎01-13-2014 08:36 AM

7009s running 6.1.3, and same. remove vtp and re-add, even in transparent mode caused the issue.

0 Helpful
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