We have the following scenario...
1. One MUX (Megaplex 2100) with low speed module connect to SW1 (3560).
2. One MUX (Megaplex 2100) with low speed module connect to SW2 (3560).
3. SW1, SW2 and SW3 (all 3560), are connected in a ring with etherchannel on fiber ports.
4. Analog phones should be connected to MUX (Megaplex 2100).
The MUX vendor require us to have Q-in-Q support to let their VLANs communicate between two MUXs.
But, it seems 3560 does not support Q-in-Q feature.
Any suggestion on this case?