PLANET GS-4210-8P2S - Manual (Page 149)

User’s Manual of GS-4210 Series
The switch with the lowest Bridge ID (switch C) was elected the root bridge, and the ports were selected to give a high port cost
between switches B and C. The two (optional) Gigabit ports (default port cost = 20,000) on switch A are connected to one
(optional) Gigabit port on both switch B and C. The redundant link between switch B and C is deliberately chosen as a 100 Mbps
Fast Ethernet link (default port cost = 200,000). Gigabit ports could be used, but the port cost should be increased from the
default to ensure that the link between switch B and switch C is the blocked link.
This section has the following items:
 STP Global Setting Configures STP system settings
 STP Port Setting Configuration per port STP setting
 CIST Instance Setting Configure system configuration
 CIST Port Setting Configure CIST port setting
 MST Instance Setting Configuration each MST instance setting
 MST Port Setting Configuration per port MST setting
 STP Statistics Display the STP statistics
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