cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
842
Views
0
Helpful
5
Replies

VTP problem in 6807xl

me_noori
Level 1
Level 1

Hello,

I have 6807xl box and I configure all ports of it it as L2 dot1q trunk and I have so many 3750 switches that they connected to the 6807xl  as L2 dot1q trunk.In all of them VLAN 1 as management VLAN and every thing is OK.I checked there is one VTP server with higher revision number and the other switch is client with vtp revision number little or equal to the VTP server revision number, VTP domain name and VTP password are the same in all switch.But VTP in some trunk doesn't work properly.I checked through show interface counter protocol stat ,in some trunk that VTP doesn't work properly the show is like this 

 

3750e # show interfaces tenGigabitEthernet 3/0/1 counters protocol status Protocols allocated: TenGigabitEthernet3/0/1: Other, IP, CDP

 

3750e # sh running-config int ten 3/0/1

description DES TO-6807-RAHIMIAN-TENGIG1/1

switchport trunkencapsulation dot1q

switchport mode trunkend

 

and the other side show is like this

 

6807xl # sh int tenGigabitEthernet 1/14 counter protocol status Protocols allocated:

TenGigabitEthernet1/14: Other, IP, Spanning Tree, CDP, VTP, DTP, UDLD

 

6807xl # show run int tengig1/14

description TO-3750e-TEN3/0/1

switchport switchport mode trunk

mtu 1510

end

as seen from show I have VTP only in one side.So how can I configure the 3750e to have VTP in the show int ten 3/0/1 counter protocol stat ?

5 Replies 5

Hello

What version of vtp is the core/3750 using?
If your using vtp password make sure that are correct as sometimes a space after the password can make the difference

 

sh vtp status.


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Hello Paul

I have checked every thing about vtp version ,domain,password and trunk between switches are OK but VTP doesn't work.You know this problem occur after changing 4507E-R with 6807XL.

l

Hello

When you say vtp doesn't work , Can you elaborate on this?
Also as before can you clarify vtp version are your running?


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Hello Paul
we had one cisco 4507 E-R switch that it had so many trunk links to other cisco 3750 switches.In this topology we had VTP server/client and it was working normally.For capacity reasons we had to change it to new cisco 6807xl with sup 6T.But since we have changed 4507 with 6807xl,we couldn't use the VTP .It seem 6807xl doesn't pass vtp packet properly.We have checked all link to the other switches from this 6807xl are Trunk,VTP domain is the same in all switches,VTP revision number in the server higher than the other clients,VTP password is the same in the all switches and VTP version is 2 in all switches.
Thanks a lot,

Hello

 


@me_noori wrote:
 little or equal to the VTP server revision number

It either less , equal or higher.

 

In any case , on the troublesome switch delete the vlan.dat file from the flash and reload the switch., see if that helps.

 


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul
Review Cisco Networking for a $25 gift card