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User’s Manual of ISW-1022M
83
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 = 4) 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 = 19). 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.
5.6.2.4 RSTP System Configuration
This section provides RSTP-System Configuration from the Switch, the screen in
Figure 5-42
appears.
The user can view spanning tree information of Root Bridge.
The user can modify RSTP state. After modification, click
Apply
.
Figure 5-42
RSTP System Configuration interface
The page includes the following fields:
Object
Description
RSTP mode:
The user must enable the RSTP function first before configuring the related
parameters.