Shared uplink between 2 vLAN's

I have an hp switch with two vLAN's that are both untagged. I have a single fiber uplink going to another hp switch in another building that has the same two vLAN's.

Don't I have to tag one vLAN to share the same uplink? Is it possible to have both untagged vLAN's use the same single uplink?
nevtecAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

mat1458Commented:
No, at least one VLAN has to be tagged on the uplink so the other switch can differentiate between the information of the two VLAN. But then it makes sense to tag both VLAN.

Tagging is no burden for a switch, its ASICs are built exactly for that.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
jburgaardCommented:
Just make sure to use same pattern in both ends of link connecting the 2 switches, like
port 26 UNtagged vlan 1, tagged vlan 2 connected to
port 25 UNtagged vlan 1, tagged vlan 2
OR
port 26 tagged vlan 1, tagged vlan 2 connected to
port 25 tagged vlan 1, tagged vlan 2
0
nevtecAuthor Commented:
Ok, thank you both. I wanted to make sure my understanding is correct.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Switches / Hubs

From novice to tech pro — start learning today.