[c-nsp] Untagged native VLAN...

[Adam Leff]

I would remove "switchport access vlan 402" from the config as I do not
believe it's actually used with the switchport is in trunk mode.

I think your primary error is that you do not include vlan 402 in your
allowed VLAN list.

switchport trunk native vlan 402
switchport trunk allowed vlan 402,498

~Adam


On Tue, Nov 23, 2010 at 11:36 AM, Elmar K. Bins <elmi at 4ever.de> wrote:

> After a lot of fiddling around and getting nowhere, I'll ask you :)
>
> I am trying to set up a test port - for an IP phone actually - with
> the office WS VLAN (402) native untagged, and the Voice VLAN (498)
> tagged on this 3560-48 (12.2(25)SEE4).
>
> My config looks like this:
>
> #sh run int f0/44
> interface FastEthernet0/44
>  description ekb Testport
>  switchport access vlan 402
>  switchport trunk encapsulation dot1q
>  switchport trunk native vlan 402
>  switchport trunk allowed vlan 498
>  switchport mode trunk
>  load-interval 30
> end
>
> #sh vlan dot1q tag native
> dot1q native vlan tagging is disabled
>
> #sh int f0/44 switchport
> Name: Fa0/44
> Switchport: Enabled
> Administrative Mode: trunk
> Operational Mode: trunk
> Administrative Trunking Encapsulation: dot1q
> Operational Trunking Encapsulation: dot1q
> Negotiation of Trunking: On
> Access Mode VLAN: 402 (VL-workstation)
> Trunking Native Mode VLAN: 402 (VL-workstation)
> Administrative Native VLAN tagging: enabled             # !!!
> Voice VLAN: none
> Administrative private-vlan host-association: none
> Administrative private-vlan mapping: none
> Administrative private-vlan trunk native VLAN: none
> Administrative private-vlan trunk Native VLAN tagging: enabled
> Administrative private-vlan trunk encapsulation: dot1q
> Administrative private-vlan trunk normal VLANs: none
> Administrative private-vlan trunk private VLANs: none
> Operational private-vlan: none
> Trunking VLANs Enabled: 498
> Pruning VLANs Enabled: 2-1001
> Capture Mode Disabled
> Capture VLANs Allowed: ALL
>
> Protected: false
> Unknown unicast blocked: disabled
> Unknown multicast blocked: disabled
> Appliance trust: none
>
>
> The "enabled" in the output seems to be the show's mistake, if
> a few web pages are to be believed, but...
>
> The trunk link to the phone works nicely, but connecting a stupid
> win xp laptop (phone removed from in between) does not seem to work.
>
> Wireshark shows me outgoing broadcast packets (DHCP queries) from
> my laptop untagged. I see no responses coming in though.
>
> Does anyone have an idea where I could find the culprit...?
>
> Cheers,
>        Elmar.
>
> --
>
> "Machen Sie sich erst einmal unbeliebt. Dann werden Sie auch
> ernstgenommen."
>                                                             (Konrad
> Adenauer)
>
> --------------------------------------------------------------[ ELMI-RIPE
> ]---
>
>
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