Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1777

Example (Brief) Example (Guard) Dell#show span 0 brief Executing IEEE compatible Spanning Tree Protocol Root ID Priority 32768 Address 0001.e800.0a56 Root Bridge hello time 2, max age 20, forward delay 15 Bridge ID Priority 32768, Address 0001.e800.0a56 Configured hello time 2, max age 20, forward delay 15 Interface Designated Name PortID Prio Cost Sts Cost Bridge ID PortID Te 1/1 8.26 8 4 FWD 0 32768 0001.e800.0a56 8.26 Te 1/2 8.27 8 4 FWD 0 32768 0001.e800.0a56 8.27 Te 1/3 8.28 8 4 FWD 0 32768 0001.e800.0a56 8.28 Dell# Dell#show spanning-tree 0 guard Interface Name Instance Sts Guard type Te 0/1 0 INCON(Root) Rootguard Te 0/2 0 LIS Loopguard Te 0/3 0 EDS (Shut) Bpduguard spanning-tree 0 Assigns a Layer 2 interface to STP instance 0 and configures a port cost or port priority, or enables loop guard, root guard, or the Portfast feature on the interface. C9000 Series Syntax spanning-tree stp-id {cost cost | | portfast [bpduguard [shutdown-onviolation]] | 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 portfast [bpduguard [shutdown-onviol ation]] Enter the STP instance ID. The range is 0. Enter the keyword cost then a number as the cost. The range is from 1 to 65535. The defaults are: • 10-Gigabit Ethernet interface = 2. • Port Channel interface with 10-Gigabit Ethernet = 1. Enter the keyword portfast to enable Portfast to move the interface into Forwarding mode immediately after the root fails. Enter the optional keyword bpduguard to disable the port when it receives a BPDU. Enter the optional keyword shutdown-on-violation to hardware disable an interface when a BPDU is received and the port is disabled. Spanning Tree Protocol (STP) 1777