Allied Telesis AT-S60 - Manual (Page 276)

AT-S60 Management Software User’s Guide
Section II: Local and Telnet Management 275
Multiple VLAN Mode Overview
The Multiple VLAN modes simplify the task of configuring a switch in a
network environment that requires a high degree of network
segmentation. These modes are useful in isolating the traffic on each
port from all other ports. They are fixed VLAN configurations that cannot
be changed.
When a Multiple VLAN mode is activated, the switch automatically
places each port in a separate VLAN as an untagged port. Each VLAN is
given a unique name and VID number based on the port number. For
example, the VLAN for Port 1 on the module in Slot 1 is called Client_1
and is given the VID of 1, the VLAN for Port 2 is called Client_2 and has a
VID of 2, and so on.
PVIDs are assigned automatically. For example, the PVID for Port 1 on the
module in Slot 1 is assigned as 1, to match the VID of 1.
A user-specified port on the switch is designated as an uplink port and is
made a member of all the VLANs. The uplink port can be connected to a
shared device, such as a router for access to a WAN.
This highly segmented configuration is useful in situations where traffic
generated by each end node or network segment connected to a port
on the switch needs to be kept separate from all other network traffic,
while allowing access to an uplink port. Unicast traffic received by the
uplink port is effectively directed to the appropriate port and end node,
and is not directed to any other port on the switch.
The AT-S60 software supports two types of Multiple VLAN modes:
❑ 802.1Q-compliant multiple VLANs
❑ Non-802.1Q compliant multiple VLANs
The VLAN modes are discussed in the following sections. Procedures for
selecting a VLAN mode is in Selecting a VLAN Mode on page 279.