Can a non-VLAN-aware switch pass 802.1q tagged packets?
Let's say I have a incoming connection which is fixed 1Gb/s with tagged packets. And lets say that I need to connect that connection to a device which is a 10/100 device, which deals with the tagged packets.
Can I use a dumb (ie: non-VLAN-aware) 1Gb switch to connect that 1Gb connection and the 10/100 Mb device?
Solution 1:
As long as the tagged packets do not exceed the supported MTU of the unmanaged switch, the tags should be propagated just fine.
Solution 2:
Not all switches will pass this information. In the past, I have personally seen cheap netgear switches reset that portion of the frame back to 00's. This was a couple of years ago, but be aware that it's possible that your packets will be changed.