ME3400 Ethertype

[random_camden]

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?

[rsimoni]

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

http://www.cisco.com/en/US/docs/switches/metro/me3400e/software/release/12.2_58_se/configuration/guide/swtunnel.html#wp1060993

Riccardo

[random_camden]

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

[rsimoni]

Hey Neil,

glad to read

Riccardo