Dell S6000 FTOS 9.0(2.0) Command Line Reference Guide for the System - Page 919

spanning-tree z S6000 Configure Spanning Tree group id, cost, priority, and Portfast for an interface. Syntax spanning-tree stp-id [cost cost] [portfast [bpduguard]] [priority priority] To disable Spanning Tree group on an interface, use the no spanning-tree stp-id [cost cost] [portfast [bpduguard] [shutdown-on-violation]] [priority priority] command. Parameters stp-id cost cost priority priority portfast [bpduguard] shutdown-onviolation Enter the Spanning Tree Protocol group ID. Range: 0 (OPTIONAL) Enter the keyword cost followed by a number as the cost. Range: 1 to 65535 Defaults: • 100 Mb/s Ethernet interface = 19 • 1-Gigabit Ethernet interface = 4 • 10-Gigabit Ethernet interface = 2 • Port Channel interface with 100 Mb/s Ethernet = 18 • Port Channel interface with 1-Gigabit Ethernet = 3 • Port Channel interface with 10-Gigabit Ethernet = 1 (OPTIONAL) Enter keyword priority followed by a number as the priority. Range: zero (0) to 15. Default: 8 (OPTIONAL) Enter the keyword portfast to enable Portfast to move the interface into forwarding mode immediately after the root fails. Enter the keyword bpduguard to disable the port when it receives a BPDU. (OPTIONAL) Enter the keyword shutdown-on-violation to hardware disable an interface when a BPDU is received and the port is disabled. Defaults cost = depends on the interface type; priority = 8 Command Modes INTERFACE Command History Version 9.0.2.0 Version 8.3.11.1 Version 6.2.1.1 Introduced on the S6000. Introduced on Z9000 Introduced Usage Information If you enable portfast bpduguard on an interface and the interface receives a BPDU, the software disables the interface and sends a message stating that fact. The port is in ERR_DISABLE mode, yet appears in the show interface commands as enabled. If shutdown-on-violation is not enabled, BPDUs will still be sent to the RPM CPU. Spanning Tree Protocol (STP) | 919