Dell PowerConnect B-FCXs Configuration Manual page 284

8
Configuring STP related features
FIGURE 36
•
242
Sync and rerooted
Proposing
Switch 200
Port2
Sync
Rerooted
Discarding
Port2
Switch 300
Indicates an 802.1W signal controlled by the current Root port
Synced and Agree – When all the ports on the bridge assert their synced signals, the new Root
port asserts its own synced signal and sends an RST BPDU to Port4/Switch 60 that contains
an agreed flag (Figure 36). The Root port also moves into a forwarding state.
Designated
Switch 100
Port2
Root port
Port1
Port1
Designated port
Sync
Rerooted
Discarding
BigIron
Port4
Root port
Sync
Rerooted
Discarding
Port3
Sync
Rerooted
Discarding
Port3
Switch 400
PowerConnect B-Series FCX Configuration Guide
Port2
port
Switch 60
Port4
Designated port
53-1002266-01