Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 1672

Usage Information Version 8.4.2.1 8.3.7.0 7.7.1.0 7.5.1.0 6.2.1.1 Description Added support for the optional guard keyword on the C-Series, S-Series, and ESeries TeraScale. Introduced on the S4810. Introduced on the S-Series. Introduced on the C-Series. Introduced on the E-Series. Enable spanning tree group 0 prior to using this command. The following describes the show spanning-tree 0 command shown in the example. Field Description "Bridge Identifier..." Lists the bridge priority and the MAC address for this STP bridge. "Configured hello..." Displays the settings for hello time, max age, and forward delay. "We are..." States whether this bridge is the root bridge for the STG. "Current root..." Lists the bridge priority and MAC address for the root bridge. "Topology flag..." States whether the topology flag and the detected flag were set. "Number of..." Displays the number of topology changes, the time of the last topology change, and on what interface the topology change occurred. "Timers" Lists the values for the following bridge timers: hold time, topology change, hello time, max age, and forward delay. "Times" List the number of seconds since the last: ● hello time ● topology change ● notification ● aging "Port 1..." "Port path..." "Designated root..." "Designated port..." Displays the Interface type slot/port information and the status of the interface (Disabled or Enabled). Displays the path cost, priority, and identifier for the interface. Displays the priority and MAC address of the root bridge of the STG that the interface belongs. Displays the designated port ID. The following describes the show spanning-tree 0 guard command shown in the Example (Guard). Field Description Interface Name Instance Sts Guard Type STP interface. STP 0 instance. Port state: root-inconsistent (INCON Root), forwarding (FWD), listening (LIS), blocking (BLK), or shut down (EDS Shut). Type of STP guard configured (Root, Loop, or BPDU guard). The peGigE ports and VP-LAG ports information is displayed as part of theshow spanning-tree 0 command output, only when the guard option is entered. 1672 Spanning Tree Protocol (STP)