Vlan Tagging; Multi Vlan Binding - Avaya W310 User Manual

In Figure 11.3, the W310 has three separate VLANs: Sales, Engineering, and Marketing.
Each VLAN has several physical ports assigned to it with PCs connected to those ports.
When traffic flows from a PC on the Sales VLAN for example, that traffic is only forwarded
out the other ports assigned to that VLAN. Thus, the Engineering and Marketing VLANs are
not burdened with processing that traffic.
Figure 11.3
Engineering
Marketing

VLAN Tagging

VLAN Tagging is a method of controlling the distribution of information on the network.
The ports on devices supporting VLAN Tagging are configured with the following
parameters:
• Port VLAN ID is the number of the VLAN to which the port is assigned.
• Tagging Mode. Untagged frames (and frames tagged with VLAN 0) entering the port
are assigned the port's VLAN ID. Tagged frames are unaffected by the port's VLAN ID.
The Tagging Mode determines the behavior of the port that processes outgoing frames:
— If Tagging Mode is set to "Clear", the port transmits frames that belong to the port's
VLAN table. These frames leave the device untagged.
— If Tagging Mode is set to "IEEE-802.1Q", all frames keep their tags when they
leave the device. Frames that enter the switch without a VLAN tag will be tagged
with the VLAN ID of the port they entered through.

Multi VLAN Binding

Multi VLAN binding (Multiple VLANs per port) allows access to shared resources by
stations that belong to different VLANs through the same port. This is useful in applications
such as multi-tenant networks, where each user has a VLAN for privacy, but the whole
building has a shared high-speed connection to the ISP.
Avaya W310 User's Guide
VLAN Switching and Bridging
Sales
Chapter 11 W310 WLAN Gateway Layer 2 Features
Marketing
Sales
Engineering
69