Dell PowerConnect FCS624S Configuration Guide - Page 285

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