Cisco WS-C3560E-48PD-SF Command Reference - Page 839
debug spanning-tree mstp
View all Cisco WS-C3560E-48PD-SF manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 839 highlights
Appendix B Catalyst 3560 Switch Debug Commands debug spanning-tree mstp debug spanning-tree mstp Use the debug spanning-tree mstp privileged EXEC command to enable debugging of the Multiple Spanning Tree Protocol (MSTP) software. Use the no form of this command to disable debugging. debug spanning-tree mstp {all | boundary | bpdu-rx | bpdu-tx | errors | flush | init | migration | pm | proposals | region | roles | sanity_check | sync | tc | timers} no debug spanning-tree mstp {all | boundary | bpdu-rx | bpdu-tx | errors | flush | init | migration | pm | proposals | region | roles | sanity_check | sync | tc | timers} Syntax Description all boundary bpdu-rx bpdu-tx errors flush init migration pm proposals region roles sanity_check sync tc timers Enable all the debugging messages. Debug flag changes at these boundaries: • An multiple spanning-tree (MST) region and a single spanning-tree region running Rapid Spanning Tree Protocol (RSTP) • An MST region and a single spanning-tree region running 802.1D • An MST region and another MST region with a different configuration Debug the received MST bridge protocol data units (BPDUs). Debug the sent MST BPDUs. Debug MSTP errors. Debug the port flushing mechanism. Debug the initialization of the MSTP data structures. Debug the protocol migration state machine. Debug MSTP port manager events. Debug handshake messages between the designated switch and the root switch. Debug the region synchronization between the switch processor (SP) and the route processor (RP). Debug MSTP roles. Debug the received BPDU sanity check messages. Debug the port synchronization events. Debug topology change notification events. Debug the MSTP timers for start, stop, and expire events. Defaults Debugging is disabled. Command Modes Privileged EXEC Command History Release 12.1(19)EA1 Modification This command was introduced. 78-16405-05 Catalyst 3560 Switch Command Reference B-79