HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 137

Note Multiple Instance Spanning-Tree Operation Configuring MSTP Example. To configure BPDU protection on ports 1 to 10 with SNMP traps enabled, enter: ProCurve(config)# spanning-tree 1-10 bpdu protection ProCurve(config)# spanning-tree trap errant-bpdu The following steps will then be set in process: 1. When an STP BPDU packet is received on ports 1-10, STP treats it as an unauthorized transmission attempt and shuts down the port that the BPDU came in on. 2. An event message is logged and an SNMP notification trap is generated. 3. The port remains disabled until re-enabled manually by a network administrator using the interface enable command. To re-enable the bpdu-protected ports automatically, configure a timeout period using the spanning-tree bpdu-protection-timeout command. Viewing BPDU Protection Status. The show spanning-tree bpdu-protection command displays a summary listing of ports with BPDU protection enabled. To display detailed per port status information, enter the specific port number(s) as shown in Figure 4-8 below. ProCurve(config)# show spanning-tree bpdu-protection a1 Status and Counters - STP BPDU Protection Information BPDU Protection Timeout (sec) : 0 Protected Ports : A1 Specifying the port displays additional status information for the designated ports. Port Type Protection State Errant BPDUs A1 100/1000T Yes Bpdu Error 1 Figure 4-8. Example of Show Spanning Tree BPDU Protection Command 4-33