On Fri, Mar 26, 2010 at 03:33:56PM -0700, Owen DeLong wrote: > Switches that support STP?
Yes, "soho" or "desktop" switches I mean. Apparently Netgear GS105's do not do STP at all, at least they don't claim to. > There are switches that have STP protection such that they are > portfast until they see an inbound BPDU and then revert to > spanning tree on that port (it blocks, listens, learns, then > forwards if appropriate). Do the ports so configured also send BPDUs such that a loop on a "desktop" switch uplinked to that port will cause the port to see its own BPDUs and revert to STP Blocking? Even if that is the case, I think the detection of BPDU and subsequent transition to Blocking will happen too slowly. By then the damage is already done upstream in the collapsed L2/L3 core.
