A SERVICE OF

logo

Open as PDF
next previous
PowerConnect B-Series FCX Configuration Guide 235
53-1002266-01
Configuring STP related features
8
NOTE
Proposed will never be asserted if the port is connected on a shared media link.
In Figure 29, Port3/Switch 200 is elected as the Root port
FIGURE 29 Proposing and proposed stage
• Sync – Once the Root port is elected, it sets a sync signal on all the ports on the bridge. The
signal tells the ports to synchronize their roles and states (Figure 30). Ports that are non-edge
ports with a role of Designated port change into a discarding state. These ports have to
negotiate with their peer ports to establish their new roles and states.
Switch 100
Root Bridge
Switch 200
Switch 300 Switch 400
Port2
Designated port
Proposing
Port1
Root port
Proposed
Port2
Port2
Port3
Port3
RST BPDU
sent with a
Proposal
flag