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