Multiple vlan on a single port not trunk

[Reymund Soerensen]

  Hi, need some help.

Valn 10: PC

Vlan 30: voice

Vlan 40: printer

How can I configure a single port for multiple vlans?? I am using a Cisco 3560 G PoE as an access switch. Vlans have differrent subnets.

I have a trunk on my last port:

interface gi0/24

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk allowed vlan 10, 30, 40

On my port:

interface gi0/1
description LAN Access
switchport access vlan 10
switchport voice vlan 30
spanning-tree portfast  

How can my printers have connection on that port???

regards rey 

[cadet alain · Accepted solution]

Hi,

to my best knowledge they can't  as this type of "mini trunk" port only supports 1 tagged vlan which is the data in your case. you need a real trunk port to have multiple tagged frames.

Regards.

Alain

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[Giuseppe Larosa · Accepted solution]

Hello Reymond,

you cannot achieve a "plug and play" configuration involving three Vlans.

There is no 3-vlans capable mini Vlan and a printer cannot be distinguished from a PC when it starts to connect to the network ( it will try to get an IP address via DHCP or it can have a manually configured IP address exactly like a PC) it does not use special protocol messages.

On ports where you know a printer will be connected you will need

switchport access vlan 40

instead of

switchport access vlan 10

This means that any time a new printer has to be connected to the network a specific network side configuration is needed.

You can use the description command to label the interfaces connecting to printers.

Hope to help

Giuseppe

[Reymund Soerensen]

Thanks for the quick response.

That help a lot.

Rey