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BPDU sent 449, received 0
The port is not in the Edge port mode, bpdu filter is disabled
Port 450 (TenGigabitEthernet 5/41) is disabled Discarding
Port path cost 2000, Port priority 128, Port Identifier 128.450
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.450 , designated path cost 0
Number of transitions to forwarding state 0
BPDU sent 0, received 0
The port is not in the Edge port mode, bpdu filter is disabled
Port 459 (TenGigabitEthernet 5/50) is designated Forwarding
Port path cost 2000, Port priority 128, Port Identifier 128.459
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.459 , designated path cost 0
Number of transitions to forwarding state 1
BPDU sent 457, received 0
The port is not in the Edge port mode, bpdu filter is disable
Modifying Global PVST+ Parameters
The root bridge sets the values for forward-delay and hello-time, and overwrites the values set on other PVST+ bridges.
● Forward-delay — the amount of time an interface waits in the Listening state and the Learning state before it transitions
to the Forwarding state.
● Hello-time — the time interval in which the bridge sends bridge protocol data units (BPDUs).
● Max-age — the length of time the bridge maintains configuration information before it refreshes that information by
recomputing the PVST+ topology.
To change PVST+ parameters on the root bridge, use the following commands.
● Change the forward-delay parameter.
PROTOCOL PVST mode
vlan forward-delay
The range is from 4 to 30.
The default is 15 seconds.
● Change the hello-time parameter.
PROTOCOL PVST mode
vlan hello-time
NOTE:
With large configurations (especially those configurations with more ports), Dell Networking recommends
increasing the hello-time.
The range is from 1 to 10.
The default is 2 seconds.
● Change the max-age parameter.
PROTOCOL PVST mode
vlan max-age
The range is from 6 to 40.
The default is 20 seconds.
The values for global PVST+ parameters are given in the output of the show spanning-tree pvst command.
Per-VLAN Spanning Tree Plus (PVST+)
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