Thus wrote zhangliang: > > I think the prorosal is very good, I also want to do something for it, but > first we should have some more knowledge about rstp, Now what only I can do > is to read librstp, but I find that is so difficult to understand rstp, can > u give some more info about it? Apart from reading librstp (which is considered to be messy etc.) we have two main sources: a) The RSTP standard itself can be downloaded from the IEEE webpage for free. It's code-number is 802.1d. Don't be put off by it's technical language. b) RSTP is based on STP. We have a decent working STP implementation inside the Linux kernel - it can give a general idea of how to implement some parts of RSTP. -- tadeusz andrzej kad?ubowski <przekaz podprogowy> kup mi iBooka </przekaz podprogowy>