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sjoram
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Location: Essex, UK

Mix untagged/tagged (access/trunk) VLANs on same port?

Tue Dec 24, 2013 9:22 pm

Sorry for posting a question that has come up on a number of other threads, but looking for clarity on the latest status.

Elsewhere, I use HP Procurve 2600 series switches which can mix both untagged and tagged VLANs on the same port, no issue.

I bought one of the RouterBOARD SwOS products assuming it would be capable of the same, but it appears that you cannot tag VLANs on an access port and vice-versa.

What I'm looking for is, for example

Port 1 untagged vlan 10 (client PC)
Port 2 untagged vlan 10 (client PC)
Port 3 untagged vlan 10 tagged vlans 20 40 60 80 100 (cisco aironet 1231, native vlan 10)
Port 4 untagged vlan 10 tagged vlan 20 (mitel 5312 phone - voice tagged vlan 20, pc port using vlan 10)
Port 5 tagged vlans 10 20 40 60 80 100 (trunk to RB750)

Ports 1, 2, 5 I can configure no issue.
Unable to get ports 3 & 4 working as required.
Home user, working in IT. Home network is my lab.
ISP: Uno Communications
Hardware:
RB750 - Draytek Vigor 120v2 ADSL2+ Annex M
RB750Gr3 - Draytek Vigor 130 FTTC (VDSL) & RBD52G-5HacD2HnD
 
akliouev
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Joined: Wed Dec 25, 2013 9:24 am

Re: Mix untagged/tagged (access/trunk) VLANs on same port?

Thu Dec 26, 2013 11:57 am

Hi!

I had a very similar problem and I managed to find a combination of the settings than worked for me.

In my case Port 1 untagged is to go to VLAN 100, Port 1 also can receive tagged frames from VLAN 200.
Port 2 is to operate in untagged mode in VLAN 200
The rest of the ports to operate in VLAN 100.

Here's the screnshoots:

VLAN tab:
VLAN tab.png
VLANS tab:
VLANS tab.png
The only weird thing is that the switch reports all the learned MAC addresses to belong to no VLAN but I checked with Wireshark and everything works as it should:
HOSTS tab.png
I use the latest SwOS 1.10

Hope this helps
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sjoram
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Posts: 116
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Location: Essex, UK

Re: Mix untagged/tagged (access/trunk) VLANs on same port?

Sat Dec 28, 2013 11:17 pm

Thanks, I'll give that a try when I get a moment.
Home user, working in IT. Home network is my lab.
ISP: Uno Communications
Hardware:
RB750 - Draytek Vigor 120v2 ADSL2+ Annex M
RB750Gr3 - Draytek Vigor 130 FTTC (VDSL) & RBD52G-5HacD2HnD

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