Dell Force10 S2410-01-10GE-24P Configuration Manual page 160

Figure 10-120
of individual ports:
Figure 10-120. Example Output of show spanning-tree mst port summary Command
S50-2 #show spanning-tree mst port summary 0 1/0/1
MST Instance ID................................ CST
Interface
--------- -------- ------- ----------------- ----------
1/0/1
S50-2 #show spanning-tree mst port summary 0 1/0/2
MST Instance ID................................ CST
Interface
--------- -------- ------- ----------------- ----------
1/0/2
The selection of 1/0/1 as the root port was based, in this case, on the value of the assigned cost. As shown
by the use of the
1/0/1 is 0 (zero), because it is directly connected to a designated port on the root bridge, and it is receiving
a 0 cost value to the root bridge. 1/0/2 is receiving a cost of 20000 to the root from its connection to 1/0/2
of S50-3. So the shorter route to the root is through 1/0/1.
Figure 10-121. Example Output from show spanning-tree mst port detailed Command for
Individual Ports
S50-2 #show spanning-tree mst port detailed
Designated Port Cost........................... 0
S50-2 #show spanning-tree mst port detailed
Designated Port Cost........................... 20000
160 | Spanning Tree
displays the output from the
STP
Mode Type State
Enabled Forwarding
STP
Mode Type State
Enabled Forwarding
show spanning-tree mst port detailed
show spanning-tree mst port summary
STP Port
Role
Root
STP Port
Role
Designated
command in
0 1/0/1
0 1/0/2
command for STP details
Figure 10-121, the cost through