Dell PowerConnect B-RX Configuration Manual page 434

13
State machines
•
FIGURE 51
Switch 300
The old Root port on Switch 200 becomes an Alternate Port
are elected to appropriate roles.
362
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 50). The Root port also moves into a forwarding state.
Rerooted,synced, and agreed
Proposing
Switch 200
Port2
Rerooted
Synced
Discarding
Port2
Indicates a signal
Switch 100
Port 2
Root port
Port1
Port1
Rerooted
Synced
Discarding
BigIron
Port4
Root port
Rerooted
Synced
Port3
Forwarding
Rerooted
Synced
Discarding
Port3
Port2
Designated
port
Port4
Designated port
Forwarding
RST BPDU
sent with
an Agreed
flag
Switch 400
(Figure 52). Other ports on that bridge
BigIron RX Series Configuration Guide
Switch 60
53-1001810-01