Non HP VLAN support switch hanging off Procuve with VLAN

[Karl Collinson]

Afternoon All,
Require a quick awnser:

Im assuming any VLAN assigned to an uplink interface to a non-supporting VLAN switches should be untagged?

Thanks,
Karl.

[Franklyn · Accepted solution]

Hi Karl,

If you are connecting a switch that is not 802.1Q compliant to Q compliant switch, what happens is that the frame will drop, because it adds 4 byte on the ethernet frame. So you are correct in your assumption, that the port should be untagged.

Good Luck,
Franklyn

[Karl Collinson]

Thanks for that Franklyn!

The 4 bytes are old added if the frame is tagged tho - Correct?



Thanks,
Karl.

[Franklyn]

Yes,the maximum size for an Ethernet frame as specified by IEEE 802.3 is 1518 bytes, this means that if a maximum-sized Ethernet frame gets tagged, the frame size will be 1522 bytes, and therefor a violation.

No problems,

Franklyn