User’s Manual of IGS-4215-16T2S
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 Configures system configuration
CIST Port Setting Configures CIST port setting
MST Instance Setting Configuration each MST instance setting
MST Port Setting Configuration per port MST setting
STP Statistics Displays the STP statistics