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Cisco phone wrong vlan

So I am not to sure why this is happening but whenever I plug this phone into the data jack it keeps showing up in the access vlan. So data jack to phone, phone hooks to pc. Configuration is straight forward and yes cdp is enabled. I can see the device when doing a show cdp nei.

switchport mode access
switchport access vlan 51
switchport voice vlan 50
spanning-tree portfast

I have the SVI's created on a 6509. I just don't understand why the phone keeps showing up in vlan 51, hence it never receives its configuration.

Are the cables to the phone connected correctly? Not reversed?

ASKER

Main cable goes to the 10/100 SW port and the pc into the 10/100 PC port.

Is the plugged directly into the 6509 or another switch? If another switch, is the voice vlan getting trunked to the access switch where the phone is plugged into?

ASKER

we have a vtp domain set up with pruning. The access switch shows it as trunking the data vlan and voice vlan not to mention other vlans that are set up. The core switch on the other hand is pruning the voice vlan due to lack of request by neighbor.

ASKER

If I put the port in access vlan 50 for the voice it will pull the dhcp information then traverse the l2l tunnel to pull the configuration files and start working also.

Hmmm, if the core switch is pruning it, then it isn't getting to the core switch correct? Did the vlan get created on the access switch by vtp?n Is the core the vtp server?

ASKER

core is the vtp server and yes when doing a show vlan br it shows up on both devices.

post a show int trunk from both switches

ASKER

Port Mode Encapsulation Status Native vlan
Gi4/36 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi4/36 1-4094

Port Vlans allowed and active in management domain
Gi4/36 1-3,5,9-10,12-13,15-16,18-19,21-22,32,48,50-52,66,90,100,104-113,118-119,152,160-161,165,170,199,216,220,223,230,251-253,260,270,289-290,300,332-341,347-349,401,501-502,504,512,516,600-601,800,999-1000

Port Vlans in spanning tree forwarding state and not pruned
Gi4/36 1,51,253

that was the core and below is the access, had to use show int switchport for that one and a pruning because it doesn't support the show int trunk command.

Name: Gi0/2
Switchport: Enabled
Administrative mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1-3,5,9,10,12,13,15,16,18,19,21,22,32,48,50-52,66,90,
100,104-113,118,119,152,160,161,165,170,199,216,220,223,230,251-253,260,
270,289,290,300,332-341,347-349,401,501,502,504,512,516,600,601,800,999,
1000
Pruning VLANs Enabled: 2-1001

Port Vlans pruned for lack of request by neighbor
Gi0/2 NONE

Port Vlans traffic requested of neighbor
Gi0/2 1,51,253

Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
Self Loopback: No

What kind of switch is the access switch? The problem is that your vlan 50 is being pruned for some reason.

ASKER

If I set the switchport to trunking the phone will come up but the data side does not. It sets the pc to the native vlan of 1 but I need it on vlan 51 preferably without setting the native vlan to 51.

ASKER

3548XL

Post the 6509 trunk config connecting to the access switch, and trunk config on the access switch.

ASKER

core:

interface GigabitEthernet4/36
description Trunk for AS24
switchport
switchport mode trunk
no ip address
end

access:

interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
end

Make sure admin vlan is NOT set to 51 in network settings of the Phone.

ASKER

It isn't, it is set to 50 on operational and admin with the pc vlan set to 51

Admin vlan needs to be 50 or blank to receive it from the switch

ASKER

Admin vlan is set to 50 at this time as well as operational and the pc vlan is set to 51

Can you post sh spanning tree vlan 50 for both switches?

ASKER

If I set the interface on the access switch to trunk and dot1q encapsulation the phone gets put in vlan 50 but the pc in vlan 1, the native. I would think that if the phone is programmed with pc vlan 51 it would put it there.

ASKER

Interesting set it to trunk and made the native vlan 51 and this is what I get.

0001.6c9e.f223 Dynamic 1 FastEthernet0/12
0001.6c9e.f223 Dynamic 51 FastEthernet0/12
8cb6.4ff6.f925 Dynamic 1 FastEthernet0/12
8cb6.4ff6.f925 Dynamic 50 FastEthernet0/12
8cb6.4ff6.f925 Dynamic 51 FastEthernet0/12

ASKER

access switch spanning tree:

Spanning tree 50 is not currently active
The following parameters have been configured :

Stp Status : Disabled
Protocol : IEEE
Max Age (sec) : 20
Hello time (sec) : 2
Forward Delay (sec): 15
Bridge Priority : 32768

core switch:

VLAN0050
Spanning tree enabled protocol rstp
Root ID Priority 20480
Address 00d0.0584.3c32
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 20480
Address 00d0.0584.3c32
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi4/8 Desg FWD 4 128.392 P2p
Gi4/11 Desg FWD 4 128.395 P2p
Gi4/13 Desg FWD 4 128.397 P2p
Gi4/14 Desg FWD 4 128.398 P2p
Gi4/27 Desg FWD 4 128.411 P2p
Gi4/28 Desg FWD 4 128.412 P2p
Gi4/29 Desg FWD 4 128.413 P2p
Gi4/31 Desg FWD 4 128.415 P2p
Gi4/32 Desg FWD 4 128.416 P2p
Gi4/33 Desg FWD 4 128.417 P2p
Gi4/34 Desg FWD 4 128.418 P2p

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------

Gi4/35 Desg FWD 4 128.419 P2p
Gi4/36 Desg FWD 4 128.420 P2p
Gi4/37 Desg FWD 4 128.421 P2p
Gi4/38 Desg FWD 4 128.422 P2p
Gi4/39 Desg FWD 4 128.423 P2p
Gi4/40 Desg FWD 4 128.424 P2p
Gi4/42 Desg FWD 4 128.426 P2p
Gi4/44 Desg FWD 4 128.428 P2p
Gi4/45 Desg FWD 19 128.429 P2p
Gi4/47 Desg FWD 4 128.431 P2p
Fa7/20 Desg FWD 19 128.788 P2p
Fa7/21 Desg FWD 100 128.789 P2p
Fa7/27 Desg FWD 19 128.795 P2p
Fa7/28 Desg FWD 19 128.796 P2p
Fa8/27 Desg FWD 19 128.923 P2p
Fa8/28 Desg FWD 19 128.924 P2p
Po2 Desg FWD 3 128.1666 P2p
Po5 Desg FWD 3 128.1669 P2p
Po19 Desg FWD 3 128.1670 P2p

On the 6500 trunk can you try:

switchport trunk pruning vlan remove 50. Also can you ensure the access switch is running the same vtp version as the 6500.

ASKER

Same version password domain whole nine yards, that is where the access switch got vlan 50 added into its database. Even though it is pruning why would on the local switchport it come up in the wrong vlan......

0001.6c9e.f223 Dynamic 51 FastEthernet0/12
8cb6.4ff6.f925 Dynamic 51 FastEthernet0/12

The second mac-address is the phone.

ASKER CERTIFIED SOLUTION

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Try testing the trunk using the PC...

Configure the port for VLAN 50 (removing the voice vlan config) and see if the PC gets an IP address - if it does your trunk to the core is ok.

ASKER

switchport trunk encapsulation dot1q
switchport trunk native vlan 51
switchport trunk allowed vlan 1,50,51,1002-1005
switchport mode trunk
switchport voice vlan 50

That seemed to fix it. Jeez what a mess, these old things HAVE got to go. Thank you so much for everyones help.

ASKER

Thanks for all of the help. Although I figured it out in the end Soulja it was like I was IM'ing you to get this working. Thanks for the awesome support.

No way you should have add to have that type of config. Very strange indeed. The whole point of voicevlan is so you don't have to change the port into a trunk configuration.

ASKER

Well it looks like the 3548XL supports the command but decides to regurgitate it into your face after 4 hours of trying to hook up a simple ip phone.

Yeah, that is a old switch after all. I am very sure this would not have been an issue on the newer switches.