Brocade BigIron RX Series Configuration Guide - Manual (Page 462)

384 BigIron RX Series Configuration Guide
53-1002484-04
Convergence in a complex RSTP topology
13
FIGURE 59 Beginning of topology change notice
Switch 2 then starts the TCN timer on the Designated ports and sends RST BPDUs that contain the
TCN as follows (
Figure ):
• Port5/Switch 2 sends the TCN to Port2/Switch 5
• Port4/Switch 2 sends the TCN to Port4/Switch 6
• Port2/Switch 2 sends the TCN to Port2/Switch 1
Switch 1
Bridge priority = 1000
Switch 2
Bridge priority = 200
Switch 5
Bridge priority = 60
Switch 6
Bridge priority = 900
Switch 4
Bridge priority = 400
Switch 3
Bridge priority = 300
Port2 Port2
Port2
Port2
Port3
Port3 Port3
Port3
Port3
Port3
Port4 Port4
Port4
Port4
Port5 Port 5
Port5
Port7 Port8
Indicates the active Layer 2 path
Indicates direction of TCN