Modify Global Pvst+ Parameters - Dell Force10 MXL Blade Configuration Manual

Display the PVST+ forwarding topology by entering the
from EXEC Privilege mode
Figure 23-4. Display the PVST+ Forwarding Topology
FTOS(conf-if-te-5/41)#do show spanning-tree pvst vlan 2
VLAN 2
Root Identifier has priority 32768, Address 001e.c9f1.00f3
Root Bridge hello time 2, max age 20, forward delay 15
Bridge Identifier has priority 32768, Address 001e.c9f1.00f3
Configured hello time 2, max age 20, forward delay 15
Bpdu filter disabled globally
We are the root of VLAN 2
Current root has priority 32768, Address 001e.c9f1.00f3
Number of topology changes 2, last change occured 00:14:39 ago on Po 23
Port 24 (Port-channel 23) is designated Forwarding
Port path cost 1600, Port priority 128, Port Identifier 128.24
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.24
Number of transitions to forwarding state 1
BPDU sent 449, received 0
The port is not
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
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

Modify 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 is the amount of time an interface waits in the Listening State and the Learning State
before it transitions to the Forwarding State.
• Hello-time is the time interval in which the bridge sends bridge protocol data units (BPDUs).
• Max-age is the length of time the bridge maintains configuration information before it refreshes that
information by recomputing the PVST+ topology.
(Figure 23-4).
, designated path cost 0
in the Edge port mode, bpdu filter is disabled
in the Edge port mode, bpdu filter is disabled
in the Edge port mode, bpdu filter is disabled
show spanning-tree pvst [vlan vlan-id]
Per-VLAN Spanning Tree Plus (PVST+) | 407
command