Dell S3100 Command Line Reference Guide for the Series 9.82.0 - Page 1523

Dell#show spanning-tree rstp Root Identifier has priority 32768, Address 0001.e801.6aa8 Root Bridge hello time 2, max age 20, forward delay 15, max hops 0 Bridge Identifier has priority 32768, Address 0001.e801.6aa8 Configured hello time 2, max age 20, forward delay 15, max hops 0 We are the root Current root has priority 32768, Address 0001.e801.6aa8 Number of topology changes 1, last change occurred 00:00:31 ago on Gi 1/1 Port 257 (GigabitEthernet 1/1) is LBK_INC Discarding Port path cost 20000, Port priority 128, Port Identifier 128.257 Designated root has priority 32768, address 0001.e801.6aa8 Designated bridge has priority 32768, address 0001.e801.6aa8 Designated port id is 128.257, designated path cost 0 Number of transitions to forwarding state 1 BPDU : sent 27, received 9 The port is not in the Edge port mode Example (Guard) Dell# show spanning-tree rstp guard Interface Name Instance Sts Guard type Gi 0/1 0 INCON(Root) Rootguard Gi 0/2 0 FWD Loopguard Gi 0/3 0 BLK Bpduguard spanning-tree rstp Configure an RSTP interface with one of these settings: port cost, edge port with optional bridge port data unit (BPDU) guard, port priority, loop guard, or root guard. Syntax Parameters spanning-tree rstp {cost port-cost | edge-port [bpduguard [shutdown-on-violation]] | priority priority | {loopguard | rootguard}} cost port-cost Enter the keyword cost then the port cost value. The range is from 1 to 200000. The defaults are: • 100 Mb/s Ethernet interface = 200000 • 1-Gigabit Ethernet interface = 20000 • 10-Gigabit Ethernet interface = 2000 • Port Channel interface with one 100 Mb/s Ethernet = 200000 • Port Channel interface with one 1 Gigabit Ethernet = 20000 • Port Channel interface with one 10 Gigabit Ethernet = 2000 • Port Channel with two 1 Gigabit Ethernet = 18000 Rapid Spanning Tree Protocol (RSTP) 1523