Network Configuration Example 1-5Priority Access Control Enabled (PACE)The Switch recognizes the PACE bit set by 3Com Etherlink® adaptersand other devices supporting PACE. When enabled, traffic with thesebits receives priority service from the Switch.Spanning Tree Protocol (STP)The Switch 3800 supports the IEEE 802.1d Spanning Tree Protocol(STP), which is a bridge-based mechanism for providing fault toleranceon networks. STP allows you to implement parallel paths for networktraffic, and ensure the following:n Redundant paths are disabled when the main paths are operational.n Redundant paths are enabled if the main traffic paths fail.For more information on STP, refer to Chapter 7.IP Unicast RoutingThe Switch 3800 can route IP traffic between the VLANs configured asvirtual router interfaces. Both dynamic and static IP routes aremaintained in the routing table. RIP version 1 and RIP version 2 aresupported.For more information on IP unicast routing, refer to Chapter 8.NetworkConfigurationExampleThis section describes where to position the Switch 3800 within yournetwork. One common use of the Switch 3800 is on a Gigabit Ethernetbackbone. Figure 1-2 shows an example of a Gigabit Ethernetbackbone within a building.
