D-Link DGS-3100-48 Product Manual - Page 88

DGS-3100 Series Gigabit Stackable Managed Switch User Manual Defining Asymmetric VLAN The device configuration allows a port to be defined as an untagged member only in one VLAN and tagged in multiple VLANs. By enabling Asymmetric VLAN on the device, a port is defined as an untagged member in multiple VLANs. This allows ports from separate VLANs access to a remote server without accessing other hosts. When Assymetric VLAN is enabled, if a port is an untagged member in VLAN #1, VLAN #1 must be the PVID. The following scenerio illustrates the feature: Port1 Server Port3 2 Port9 Port17 3 4 VLAN2 VLAN3 Figure 0-7. Asymmetric VLAN scenerio Port 1 connect to Server; port 1, port 3, port 9 and port 17 are untagged ports; PC3 & PC4 are in the same VLAN#3; port 1 is a untagged member of VLAN#2 and VLAN#3 (untagged member overlap). Then the server can talk with VLAN#2, VLAN#3; PC3 and PC4 can talk to the server and to each other; PC2 can talk to the Server; VLAN#2 can't communicate with VLAN3. In this example port 1 need to be untagged member in VLAN#2 & VLAN#3, so Asymmetric VLAN should be enabled NOTE: In order to support this network scenario, the user will need to activate also 'DLF Filtering' feature which will be released in DGS-3100-xx R3.0 as well 1. Click L2 Features >Asymmetric VLAN. The . Asymmetric VLAN Page opens: 72