3Com 2226 PWR User Guide - Page 38

38 CHAPTER 4: CONFIGURING THE SWITCH Figure 17 Uplink VLAN Configuration Endstation in VLAN 1 (Desktop) Server in VLAN 1 (Desktop) Endstation in VLAN 2 (Desktop) Switch 1 Switch 2 Port 16 in VLANs 1 and 2 (Uplink) Port 8 in VLANs 1 and 2 (Uplink) Endstation in VLAN 2 (Desktop) Endstation in VLAN 1 (Desktop) Server in VLAN 2 (Desktop) To set up the configuration shown in Figure 17, do the following: 1 Create VLAN2 on both Switch 1 and Switch 2, and assign the same name to it. You need not create VLAN1 since it exists by default. 2 On Switch 1, set the ports that you want to be part of VLAN2 to D (desktop egress packet). Set one port (for example, port 16) to U (uplink egress packet). Click Apply. 3 On Switch 2, set the ports that you want to be part of VLAN2 to D (desktop egress packet). Set one port (for example, port 8) to U (uplink egress packet). Click Apply. 4 Connect the uplink port on Switch 1 (in this example, port 16) to the uplink port on Switch 2 (in this example, port 8). Those ports on Switch 1 that are members of VLAN2 can now communicate with those ports on Switch 2 that are members of VLAN2. Removing a VLAN To remove an existing VLAN: 1 In the VLAN ID list, select the VLAN ID that you want to delete. 2 Click Remove. The VLANs page refreshes, and the VLAN ID that you deleted disappears from the VLAN ID list. Configuring Link Aggregation Link aggregation, also called "port trunking", refers to bonding multiple ports into a single group to effectively combine the bandwidth into a single connection or a "trunk". If you are connecting the Switch to another switch or to an Internet backbone, you can aggregate links on the Switch to increase throughput and prevent packet loopback between switches. For link aggregation to work, the trunks must be configured on both ends (switches).