3Com 2928 User Guide - Page 441

1 Port Isolation Group Configuration Overview Usually, Layer 2 traffic isolation is achieved by assigning ports to different VLANs. To save VLAN resources, port isolation is introduced to isolate ports within a VLAN, allowing for great flexibility and security. Currently: z 3Com Switch 2900 series support only one isolation group that is created automatically by the system as isolation group 1. You can neither remove the isolation group nor create other isolation groups on such devices. z There is no restriction on the number of ports assigned to an isolation group. Usually, Layer 2 traffic cannot be forwarded between ports in different VLANs. However, the Layer 2 data transmission between ports within and outside the isolation group is supported. Configuring a Port Isolation Group Select Security > Port Isolate Group from the navigation tree and in the page that appears, click the Modify tab to enter the page shown in Figure 1-1. Figure 1-1 Configure a port isolation group Table 1-1 describes the port isolation group configuration items. 1-1