Configuration Guide User guide

BigIron RX Series Configuration Guide 385

53-1002484-04

Convergence in a complex RSTP topology

FIGURE 60 Sending TCN to bridges connected to Switch 2

Then FRY1, Switch 5, and Switch 6 send RST BPDUs that contain the TCN to Switch 3 and Switch 4

to complete the TCN propagation (Figure 61).

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

Port3

Port4 Port4

Port4

Port2

Port5

Indicates the active Layer 2 path

Indicates direction of TCN

Port7 Port8