Vlan Descriptions

[adam.dillon1]

I was doing some digging and research on our switches, as I'm new to the position. I came across something that's puzzled me.

My 3750x has a list of Vlans that differ from a switch down the chain.

show vlan brief brings up

20 harvest

My 3560 switch has the same vlan but the description is different

20 Mesh-Wifi

I attempted to change the description and this is what I get...

rv-tower-53(config)#vlan 20
%VTP VLAN configuration not allowed when device is in CLIENT mode.
rv-tower-53(config)#

What I don't understand is why my description would be different if this switch is in client mode.

[Scott Strickland]

What VTP mode is your 3750X in?

Is your 3560 the VTP client of another switch?

[adam.dillon1]

Feature VLAN:
--------------
VTP Operating Mode                : Server
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 17

Is there an command to see which VTP server the switch is using?

EDIT:

When I do a show vtp status on the client switch I get

Configuration last modified by 192.168.210.1 at 1-31-12 18:23:13

192.168.210.1 is my 3750x switch.

Interestingly the conf was last modified on the 3750x on 6-7-16.

[Scott Strickland]

provide the full output of 'show vtp status' from both switches.

Yes, on a VTP client, it should state something to the effect of 'configuration last modified by x.x.x.x'

[adam.dillon1]

RV-CompRm-3750X-1#show vtp status
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 : smbsc
VTP Pruning Mode                : Enabled
VTP Traps Generation            : Disabled
Device ID                       : 4055.39bb.4b80
Configuration last modified by 192.168.210.1 at 6-7-16 15:31:19
Local updater ID is 192.168.210.1 on interface Vl10 (lowest numbered VLAN interface found)

Feature VLAN:
--------------
VTP Operating Mode                : Server
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 17
Configuration Revision            : 43
MD5 digest                        : 0xE9 0xEB 0xA8 0x7C 0xE2 0x79 0x37 0xFA
                                    0x87 0xDD 0x47 0xA5 0x62 0xDD 0x10 0xCD

---------------------------------------------------------------------------------------------------------------.

rv-tower-53#show vtp status
VTP Version                     : 2
Configuration Revision          : 16
Maximum VLANs supported locally : 1005
Number of existing VLANs        : 12
VTP Operating Mode              : Client
VTP Domain Name                 : smbsc
VTP Pruning Mode                : Enabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x13 0x89 0xEE 0xDE 0x61 0x5A 0x57 0x4C
Configuration last modified by 192.168.210.1 at 1-31-12 18:23:13
rv-tower-53#

[Scott Strickland]

Appears that the VTP domain names match, but you are running VTP version 1 on the 3750X and version 2 on the 3560 (rv-tower-53) switch.  I'm not sure right off hand if that causes any issues.

If you're not dealing with a large switch environment, you could put each switch into VTP transparent mode.  That would allow you to get all of the VLAN names synched up. Just remember, the names are locally significant, they could be called something different on every switch and it wouldn't matter.

One other thing I just thought of, you do actually have the connection between the two switches running as a trunk?  I don't believe VTP passes over access ports.

[adam.dillon1]

Sorry for the data dump.. This is how it gets from the 3560 to the 3750.

**SWITCH** tower fe0/1 trunk
interface FastEthernet0/1
 description vlan trunk to tare-2960 gi1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 srr-queue bandwidth share 10 10 60 20
 srr-queue bandwidth shape  10  0  0  0
 mls qos trust cos
 auto qos voip trust


**SWITCH** tare ge1/0/24 trunk
interface GigabitEthernet1/0/24
 description VLAN trunk port to tower 3560-8
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust

**SWITCH** tare ge1/0/1 trunk
interface GigabitEthernet1/0/1
 description Trunk port to firstfloor-2960 1/0/21
 switchport trunk native vlan 10
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 srr-queue bandwidth shape 10 0 0 0
 priority-queue out
 mls qos trust cos
 auto qos trust
 spanning-tree portfast

**SWITCH** firstfloor ge1/0/21 trunk
interface GigabitEthernet1/0/21
 description vlan trunk to Tarelab int fa0/5
 switchport trunk native vlan 10
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust

**SWITCH** firstfloor ge1/0/24 trunk
interface GigabitEthernet1/0/24
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 srr-queue bandwidth shape 10 0 0 0
 priority-queue out
 mls qos trust cos
 auto qos trust
 spanning-tree portfast

**SWITCH** factmain ge1/0/24 trunk
interface GigabitEthernet1/0/24
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust

**SWITCH** factmain ge1/0/26 trunk
interface GigabitEthernet1/0/26
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust

**SWITCH** comprm ge1/1/2 trunk
interface GigabitEthernet1/1/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust