Dell PowerConnect B-RX Configuration Manual page 432

13
State machines
•
FIGURE 49
Switch 300
360
Sync and Reroot – The Root port then asserts a sync and a reroot signal on all the ports on the
bridge. The signal tells the ports that a new Root port has been assigned and they are to
renegotiate their new roles and states. The other ports on the bridge assert their sync and
reroot signals. Information about the old Root port is discarded from all ports. Designated
ports change into discarding states
Sync and reroot
Proposing
Switch 200
Port2
Sync
Reroot
Discarding
Port2
Indicates a signal
(Figure 49).
Switch 100
Port2
Root port
Port1
Port1
Root port
Sync
Reroot
Forwarding
BigIron
Port4
Root port
Sync
Reroot
Discarding
Port3
Sync
Reroot
Discarding
Port3
Port2
Designated
port
Port4
Designated port
Proposing
Switch 400
BigIron RX Series Configuration Guide
Switch 60
53-1001810-01