Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1775

Command History This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. The following is a list of the Dell Networking OS version history for this command. Version 9.9(0.0) 9.2(1.0) 8.3.19.0 8.3.11.1 8.5.1.0 8.4.2.1 8.3.7.0 7.7.1.0 7.5.1.0 6.2.1.1 Description Introduced on the C9010. Introduced on the Z9500. Introduced on the S4820T. Introduced on the Z9000. Added support for 4-port 40G line cards on the E-Series ExaScale. 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. Usage Information Enable spanning tree group 0 prior to using this command. The following describes the show spanning-tree 0 command shown in the example. Field "Bridge Identifier..." "Configured hello..." "We are..." "Current root..." "Topology flag..." "Number of..." "Timers" "Times" Description Lists the bridge priority and the MAC address for this STP bridge. Displays the settings for hello time, max age, and forward delay. States whether this bridge is the root bridge for the STG. Lists the bridge priority and MAC address for the root bridge. States whether the topology flag and the detected flag were set. Displays the number of topology changes, the time of the last topology change, and on what interface the topology change occurred. Lists the values for the following bridge timers: hold time, topology change, hello time, max age, and forward delay. List the number of seconds since the last: • hello time • topology change • notification • aging "Port 1..." "Port path..." "Designated root..." 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. Spanning Tree Protocol (STP) 1775