Hello. I'm fairly (very) new to the kernel and networking in general, but I thought I'd give the following a shot here... I was reading thought the STP chapter in Understanding Linux Network Internals and testing out the bridging configuration with brctl, and was surprised to find that setportprio would only have any effect for values 0 to 63 (on 2.6.12.3 and using bridge-utils 0.9.6). It seems the port priority has been handled as 6 bits since this: http://lists.osdl.org/mailman/htdig/bridge/2004-April/000274.html On page 322 of the book, it describes it as originally 8 bits, then changed to 4bits with 802.1t (in 2001). I'm not sure if there has there been any movement/talk on working on conformance with 802.1t, but I wonder if it would be good to go with one of the two standards. In 802.1t, it seems that the bridge priority was changed from 16 bits to 4 bits, with changes for port cost as well. Chris