Re:True... (Score 2, Interesting)

system mtu 1504

THEY didn't currupt your data- .1q adds extra bits onto a packet so that it can "tunnel" data from source to destination- with- you VLAN info etc intact... thus it has to add data to the packet- which can make it bigger (jumbo) than intermediate devices expect/allow... it's normal bevahior and you just need to tell those intermediate devices to allow bigger MTU size without dropping the frame as being too big... Maybe this was a while back or something.

You can't blame Cisco for a missing config line...