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Spanning tree PVST vlan changes

afsharki2
Level 1
Level 1

Hello,

When looking at the spanning-tree summary page, what does it mean when counters increment under the "Forwarding and STP active" column?

For example for VLAN0005 and 0006, I saw that the counters increment by 1 over the weekend.  What does this tell me?

show spann tree summary

Switch is in pvst mode
Root bridge for: none
EtherChannel misconfig guard is enabled
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is enabled
Portfast BPDU Filter Default is disabled
Loopguard Default is enabled
UplinkFast is disabled
BackboneFast is disabled
Configured Pathcost method used is short

Name     Blocking     Listening          Learning        Forwarding        STP Active
---------------------- -------- --------- -------- ---------- ----------
VLAN0001 0 0 0                                                                       1                  1
VLAN0002 0 0 0                                                                       2                  2
VLAN0003 0 0 0                                                                       1                  1
VLAN0004 0 0 0                                                                       10                10
VLAN0005 0 0 0                                                                       4                  4
VLAN0006 0 0 0                                                                       9                  9
VLAN0007 0 0 0                                                                       14                14
---------------------- -------- --------- -------- ---------- ----------
7 vlans 0 0 0 41 41

1 Accepted Solution

Accepted Solutions

Milos Megis
Level 3
Level 3

Hi,
it should be number of active ports in each VLAN (access ports and trunks which permitted VLAN).

Try to type command "show spanning-tree" and if you count number of interfaces for each VLAN you will get number in show spanning-tree summary

View solution in original post

1 Reply 1

Milos Megis
Level 3
Level 3

Hi,
it should be number of active ports in each VLAN (access ports and trunks which permitted VLAN).

Try to type command "show spanning-tree" and if you count number of interfaces for each VLAN you will get number in show spanning-tree summary

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