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no untagged confusion

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Cameron Stephens
Occasional Contributor

no untagged confusion

Hello, I come from a Cisco background where access ports and trunk ports are fairly straight forward to understand. I am now working at a company with a HP 5406zl which has tagged and untagged ports configured. Unfortunately the confusion lies with some VLANs having ports configured as 'no untagged'.

I havent been able to find any info by searching the forums as all it brings up is people's sample configs. Can anyone explain what this command accomplishes?

Thanks!
3 REPLIES
Jeff Carrell
Honored Contributor
Solution

Re: no untagged confusion

quick info:

cisco speak = procurve (most industry) speak
--------------------------------------------
access port = untagged port
trunk port = tagged port (802.1Q)
etherchannel/FEC = trunk or LACP

now to the answer to your q:

the 'no untagged x' in vlan 1 means that the port has been moved untagged into a different vlan...

at factory defaults, all ports start out untagged in the default vlan - vlan 1...

hth...jeff
Cameron Stephens
Occasional Contributor

Re: no untagged confusion

Thanks again Jeff for your help.

Cameron
RicN
Valued Contributor

Re: no untagged confusion


I can also agree with you that the "no untagged" is strange because it is very unlogical.

Default all ports are in VLAN1, like:

untagged a1-a24

Then when you create, say, VLAN2 and move some port there then VLAN2 is:

untagged a10

and what VLAN1 in my opinion SHOULD look like:

untagged a1-a9,a11-a24

This information is "really" complete.

But, which makes it confusing is the "double information" now in VLAN1:

untagged a1-a9,a11-a24
no untagged a10

which means the same, but the second line really has no logical use, but for some reason automaticly included. It is only seen in VLAN1.