Cisco vlan trunking with other non-cisco switch

Posted on 2004-11-08
Last Modified: 2008-01-09
I have a 6509 and a 3548 connected via vlan trunking, but now I am trying to connect a Dlink switch to the 3548 with vlan trunking. Dlink told me that their switch support vlan tagging. I had try unsuccessfully to make a vlan trunking for the dlink and 3548 switch. I only manage to get layer 1 up and running. The following is my config for the 3548 switch

Interface fastethernet0/48
switchport trunk encapsulation dot1q
switchport mode trunk

Dlink config
ports 1 vlan 200, tagged, 802.1q

the 3548 switch trunk status is
Name: Fa0/48
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: 1,20,50,60,101,201-203,301,302,304-310,401-429,500-504
Pruning VLANs Enabled: 2-1001

Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Please advise how to get it working
Question by:ghgan
    LVL 36

    Expert Comment

    Hi ghgan,
    > Dlink config
    > ports 1 vlan 200, tagged, 802.1q
    Does this mean you have set the native VLAN on the D-Link to 200?

    Author Comment

    the native VLAN on the D-link is set to Vlan 1
    LVL 36

    Expert Comment

    VLAN 200 is not active on the Cisco. Can you post the entire Cisco configuration?
    LVL 28

    Expert Comment

    It doesn't appear that the switch port is configured to allow vlan 200. Do the following:

    In enable mode:
    vlan database
     vlan 200
    config t
    interface f0/48
     switchport trunk allowed vlan add 200

    Expert Comment

    From what you've shown above you need to enable dot1q :)

    You need to do the following:

    interface port
     switchport trunk encapsulation dot1q
     switchport mode trunk
     no cdp enable

    That should solve the problem :)

    Accepted Solution

    Infact, apologies, I've just re-read the post...

    If I understand correctly, you're going 6509 -> 3500 -> Dlink?

    Have you created vlan 200 on the 6509? It needs to get the vlan 200 tag from somewhere, so it needs to be added there. Create an interface.

    int vlan 200
    ip address
    no cdp enable
    no shutdown

    Try that, if not, to test that the dlink is working, plug it directly into the 6509 and create a trunk port. Is the dlink switch layer2 or 3?

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