That seems right to be. The link should not go down just because spanning tree is blocking a port.
"" Curious"" wrote in message news:[EMAIL PROTECTED] > Hello friends, I have an spanning tree question for you! > > I have a lot of switches connected between them, but I have seen > something that I can not explain very well. Two of these switches are > connected using two cables: > > Switch1 Switch2 > Port 29 ------------- Port 29 > Port 30 ------------- Port 30 > > I expected to see one port in blocking state (spanning-tree) and the other > in forwarding state, but suprisingly I have seen that port 30 is in blocking > state > in Switch1 but it is in forwarding state in Switch 2. Let's see these > outputs: > > > > Switch1#sh spanning-tree interface FastEthernet 0/29 > Interface Fa0/29 (port 35) in Spanning tree 1 is FORWARDING > Port path cost 19, Port priority 128 > Designated root has priority 32768, address 0002.fd3c.18b5 > Designated bridge has priority 32768, address 0005.5e0c.57b6 > Designated port is 35, path cost 23 > Timers: message age 0, forward delay 0, hold 0 > Switch1#sh spanning-tree interface FastEthernet 0/30 > Interface Fa0/30 (port 36) in Spanning tree 1 is FORWARDING > Port path cost 19, Port priority 128 > Designated root has priority 32768, address 0002.fd3c.18b5 > Designated bridge has priority 32768, address 0005.5e0c.57b6 > Designated port is 36, path cost 23 > Timers: message age 0, forward delay 0, hold 0 > BPDU: sent 264503, received 2 > > > > Switch2#sh spanning-tree interface FAstEthernet 0/29 > Interface Fa0/29 (port 35) in Spanning tree 1 is FORWARDING > Port path cost 19, Port priority 128 > Designated root has priority 32768, address 0002.fd3c.18b5 > Designated bridge has priority 32768, address 0005.5e0c.57b6 > Designated port is 35, path cost 23 > Timers: message age 4, forward delay 0, hold 0 > BPDU: sent 2, received 264561 > Switch2#sh spanning-tree interface FAstEthernet 0/30 > Interface Fa0/30 (port 36) in Spanning tree 1 is BLOCKING > Port path cost 19, Port priority 128 > Designated root has priority 32768, address 0002.fd3c.18b5 > Designated bridge has priority 32768, address 0005.5e0c.57b6 > Designated port is 36, path cost 23 > Timers: message age 3, forward delay 0, hold 0 > BPDU: sent 2, received 264573 > > > Why a port is in blocking state and the other is in forwarding??? I > expected to > see both ports in blocking, but one forwarding and the other blocking > doesn't make > sense!!! > > Thanks a lot! > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74618&t=74594 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
