11-30-2011 09:08 AM
Is it possible to change the Ethertype used on a ME3400 switch (12.2(55)SE).
Our carrier uses 0x8100, but when we configure a QinQ port and send double-tagged packets to them, I think they are going out ax 0x88a8.
I've found commands to do it on a 10K, but not on a 3400.. Is it possible, or do we need a bigger box?
12-01-2011 02:17 AM
Hi RC,
for your reference this topic has been partially covered already here:
https://supportforums.cisco.com/message/3486802 from 802.1ah point of view. 802.1ad (which is the non Cisco proprietary version of QinQ) is pretty similar as both use ethertype 0x88a8.
Regarding the me3400 only the E version (Me3400E) is able to recognize and use ethertype 0x88a8.
So unless you have a Me3400E and you have the 802.1ad configuration as per the link below I suppose that your box is using 0x8100 instead.
Do you have captures showing the double-tagged frames going out from your box?
For more on 802.1ad configuration on me3400e see
Riccardo
12-06-2011 05:59 AM
Hi Riccardo.
Thanks for the reply. We've figured out this isn't an Ethertype issue and have now got QinQ working over the link.
Neil
12-06-2011 06:13 AM
Hey Neil,
glad to read
Riccardo
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