User guide

5-2 SUMMIT SWITCH INSTALLATION AND USER GUIDE
V IRTUAL LAN S (VLAN S )
¥ VLANs provide extra security.
Devices within each VLAN can only communicate with member devices in the same
VLAN. If a device in VLAN Marketing must communicate with devices in VLAN
Sales, the trafÞc must cross a routing device.
¥ VLANs ease the change and movement of devices.
With traditional networks, network administrators spend much of their time dealing
with moves and changes. If users move to a different subnetwork, the addresses of
each endstation must be updated manually.
For example, with a VLAN, if an endstation in VLAN Marketing is moved to a port
in another part of the network, and retains its original subnet membership; you must
only specify that the new port is in VLAN Marketing.
TYPES OF VLANS
The Summit supports a maximum of 256 VLANs. Summit VLANs can be created
according to the following criteria:
¥ Physical port
¥ 802.1Q tag
¥ Ethernet protocol type
¥ A combination of these criteria
PORT-BASED VLANS
In a port-based VLAN, a VLAN name is given to a group of one or more ports on the
Switch. A Switch port can be a member of only one port-based VLAN.
SUMMIT.BK Page 2 Thursday, September 25, 1997 12:33 PM