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Port 257 (TenGigabitEthernet 0/0) 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
--------- -------- -------------------
Te 0/1 0 INCON(Root) Rootguard
Te 0/2 0 FWD Loopguard
Te 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.
Z9500
Syntax
spanning-tree rstp {cost port-cost | edge-port [bpduguard
[shutdown-on-violation]] | priority priority | {loopguard |
rootguard}}
Parameters
cost port-cost Enter the keyword cost then the port cost value. The range
is from 1 to 200000. The defaults are:
• 10-Gigabit Ethernet interface = 2000
• Port Channel interface with one 10-Gigabit Ethernet =
2000
• Port Channel with two 10 Gigabit Ethernet = 1800
edge-port Enter the keywords edge-port to configure the interface as
a rapid spanning tree edge port.
bpduguard
(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.
1588
Rapid Spanning Tree Protocol (RSTP)