Dell PowerConnect B-FCXs Configuration Manual page 285

FIGURE 37
The old Root port on Switch 200 becomes an Alternate Port
are elected to appropriate roles.
The Designated port on Switch 60 goes into a forwarding state once it receives the RST BPDU with
the agreed flag.
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Rerooted, synced, and agreed
Switch 100
Port1
Proposing
Port1
Rerooted
Synced
Discarding
Switch 200
Port2
Port3
Rerooted
Rerooted
Synced
Synced
Discarding
Discarding
Port2
Switch 300
Indicates a signal
Configuring STP related features
Port2
Designated
port
Port 2
Root port
RST BPDU
sent with
an Agreed
BigIron
flag
Port4
Root port
Rerooted
Synced
Forwarding
Port3
Switch 400
(Figure
Switch 60
Port4
Designated port
Forwarding
38). Other ports on that bridge
8
243