Filter
Top Products
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide
Figure 5-4. Before Applying the STA Rules
In this example, only the default STP values are used.
Figure 5-6. After Applying the STA Rules
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 =
10) 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.
Link Aggregation
Link aggregation is used to combine a number of ports together to make a single high-bandwidth data
pipeline. The participating parts are called members of a link aggregation group, with one port
35