Dell PowerConnect B-FCXs, Configuration Manual

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PowerConnect B-Series FCX Configuration Guide 235
53-1002266-01
Configuring STP related features
8
NOTE
Proposed will never be asserted if the port is connected on a shared media link.
In Figure 29 , Port3/Switch 200 is elected as the Root port
FIGURE 29 Proposing and proposed stage
•
Sync – Once the Root port is elected, it sets a sync signal on all the ports on the bridge. The
signal tells the ports to synchronize their roles and states (
Figure 30 ). Ports that are non-edge
ports with a role of Designated port change into a discarding state. These ports have to
negotiate with their peer ports to establish their new roles and states.
Switch 100
Root Bridge
Switch 200
Switch 300 Switch 400
Port2
De
s ign a ted port
Proposing
Port1
Root port
Proposed
Port2
Port2
Port3
Port3
RST BPDU
s ent with a
Propo sa l
fl a g