What should I do if my switch (which has switched ports to the desktop) reports many Spanning Tree Protocol (STP) topology changes, even if I am not having connectivity problems?
You can view how many topology changes are occurring by looking at the Topology Change Count in the Status and Counters—SpanningTree Information screen on your HP ProCurve Switch 8000m, 4000m, 2424m, 2400m, or 1600m. STP was developed to manage switch-to-switch links, or bridge-to-bridge links as they were initially called. For most of STP’s lifetime, a topology change was a serious event as it indicated a change in the LAN topology. It also indicated a likelihood that STP had to bring (at least) a portion of the LAN down for awhile in order to rebuild a new working topology. Of course, in a LAN we expect the topology to change only rarely. Over the past few years, the cost of switch ports has dropped dramatically. Users can now afford to dedicate switch ports to end nodes. Once an STP topology is stable, establishing an Ethernet link on a switch port results in a topology change. This happens every time a user powers up their PC (assuming that the PC is directly connected to a switch
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