Solved

Shared uplink between 2 vLAN's

Posted on 2012-03-23
3
854 Views
Last Modified: 2012-03-24
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?
0
Comment
Question by:nevtec
3 Comments
 
LVL 10

Accepted Solution

by:
mat1458 earned 250 total points
ID: 37760169
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
 
LVL 17

Assisted Solution

by:jburgaard
jburgaard earned 250 total points
ID: 37760835
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
 

Author Comment

by:nevtec
ID: 37761693
Ok, thank you both. I wanted to make sure my understanding is correct.
0

Featured Post

Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The worst thing when starting a new job is when the previous Network Administrator left behind no documentation. How do you get into the devices? If you've been in this situation or just accidently mistyped your password, this article will hopefully…
I eventually solved a perplexing problem setting up telnet for a new switch.  I installed a new Cisco WS-03560X-24P switch connected to an existing Cisco 4506 running a WS-X4013-10GE Sup II-Plus. After configuring vlans and trunking,  I could no…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question