3Com 5500G-EI Command Reference Guide - Page 319
To display a brief STP summary for the Switch, enter the following
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RSTP Configuration Commands 323 Maximum transmission limit is 3 Packets / hello time Times: Hello Time 2 sec, Max Age 20 sec Forward Delay 15 sec, Message Age 0 BPDU sent: 0 TCN: 0, RST: 0, Config BPDU: 0 BPDU received: 0 TCN: 0, RST: 0, Config BPDU: 0 Table 50 Display information Field Description Protocol mode Current Switch is executing RSTP. The bridge ID (Pri.MAC): 32768.00e0-fc00-5600 The bridge times: Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec Root bridge ID(Pri.MAC): 32768.00e0-fc00-5600 The RSTP configuration of the Switch, including priority and MAC address of local bridge, Configured time parameter (Hello Time, Max Age, Forward Delay), priority and MAC address of root bridge, the path cost from this Switch to the root path cost mode, timeout time. Root path cost: 0 Bridge bpdu-protection: disabled Default path cost standard is dot1t Timeout factor: 3 Port 2 (GigabitEthernet1/0/2) of bridge is DOWN Port spanning tree protocol: enabled Port role: Disabled Port Port path cost: 200000 Port priority: 128 Designated bridge ID(Pri.MAC): 32768.00e0-fc00-5600 The Port is a non-edged port Connected to a non-point-to-point LAN segment The RSTP configuration of port 2, including the port's status is down, the port RSTP is enabled, this port is Disabled Port, the cost to root of this port , the priority of this port, the priority and MAC address of Designated bridge, this port is configured as a non-edge port, the link of this port is non-point-to-point, Maximum transmission limit is 3 BPDUs per hello time, configured RSTP time parameters(Hello Time, Max Age, Forward Delay, Message Age), the statistics of BPDU (TCN specifies the number of topology-change-notify datagram, RST specifies the number of RSTP datagram, Config BPDU specifies the number of STP datagram) Maximum transmission limit is 3 Packets / hello time Times: Hello Time 2 sec, Max Age 20 sec Forward Delay 15 sec, Message Age 0 BPDU sent: 0 TCN: 0, RST: 0, Config BPDU: 0 BPDU received: 0 TCN: 0, RST: 0, Config BPDU: 0 To display a brief STP summary for the Switch, enter the following: display stp brief The summary is displayed as shown in the following example. unitID 2 Port Ethernet2/0/6 Role STP State Protection PA DISA FORWARDING NONE NONE