Configuration Guide Owner manual

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 60 ):
• 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
Spanning Tree Protocol
296 FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide
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