need help decoding spanning tree info

[jaredhmr]

Hello,

I have four switches. two switches uplinked to two other switches. Switch 1 and Switch 2 are both uplinked to switch 3 and 4 with two gig uplinks each. The uplink ports 1/1 and 1/2 on both switches.
I need to understand this show output to figure out which ports are being blocked and which are active on the uplinks.
Here is the output.
Switch1# show spantree active VLAN 1
Port State Role Cost Prio Type
------------------------ ------------- ---- --------- ---- ---------------
1/1 forwarding DESG 4 32 P2P, PEER(STP)
1/2 forwarding ROOT 4 32 P2P, PEER(STP)
4/14 forwarding DESG 19 32 P2P, PEER(STP)
8/23 forwarding DESG 19 32 P2P, PEER(STP)

show spantree blocked
T = trunk
g = group
Ports VLANs
----- ----------
1/2 (T) 5,7,8,9,10,11,12,15,20,22,25,26,40,42,44,45,46,48,50,51,106,128,142,
254,500,777
Number of blocked ports (segments) in the system : 26

Switch2:
show spantree active
Port Vlan Port-State Cost Prio Portfast Chan
------------------------ ---- ------------- --------- ---- -------- ----
1/1 1 forwarding 4 32 disabled 0
1/2 1 forwarding 4 32 disabled 0
3/1 1 forwarding 19 32 disabled 0

show spantree blocked
T = trunk
g = group
Ports VLANs
----- ----------
1/2 (T) 5,7,8,9,10,11,12,15,20,22,25,26,40,42,44,45,46,48,
254,500,777
Number of blocked ports (segments) in the system : 26

Any help is appreciated.
Thank you,

 

[RookThis]

you want to see the information for just vlan 1 or all the vlans...

I would issue the show spanning-tree command on the uplinks... that way it will tell you which are forwarding and which are being blocked.