Configuration Guide User guide

BigIron RX Series Configuration Guide 373
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State machines
13
FIGURE 50 Sync and rerooted
• 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.
BigIron
Switch 100
Port2
Designated
port
Switch 60
Port4
Designated port
Port2
Root port
Port1
Port1
Designated port
Sync
Rerooted
Discarding
Port4
Root port
Sync
Rerooted
Discarding
Port3
Sync
Rerooted
Discarding
Port2
Sync
Rerooted
Discarding
Switch 200
Proposing
Port2
Port3
Switch 300
Switch 400
Indicates an 802.1W signal controlled by the current Root port