Layer 2 Features; Vlans; Multiple Vlans Per Port; Spanning Tree - Avaya P334T-ML User Manual

Layer 2 Features

VLANs

The P334T-ML module is fully IEEE 802.1Q compliant and can handle up to 252
tagged VLANs from a range of 1 to 3071.
• Automatic VLAN Learning — This module learns the VLANs automatically
from traffic received on ports in "bind to all" mode. The maximum number of
VLANs, 252, includes these dynamically learned VLANs and any VLANs you
added manually.
Note: A P334T-ML, being a stack master, imposes a maximum number of 252
VLANs on the entire stack.

Multiple VLANs per Port

The P334T-ML provides the ability to set multiple VLANs per port. The three
available Port Multi-VLAN binding modes are:
• Bind to All - the port is programmed to support the entire 3K VLANs range.
Traffic from any VLAN is forwarded through a port defined as Bound to All.
• Bind to Configured - the port supports all the VLANs configured in the
switch/stack. These may be either Port VLAN IDs (PVID) or VLANs that were
manually added to the switch.
• Statically Bound - the port supports VLANs manually configured on it.
Note: VLAN Binding — The forwarding mechanism of the P330-ML switches is
based on frame's VLAN and MAC address. If a frame is destined to a known MAC
address but arrives on a different VLAN than the VLAN on which this MAC
address was learnt, this frame will be flooded as unknown to all ports that are
bound to its VLAN. Hence, VLAN binding should be executed with care, especially
on ports connected to workstations or servers.

Spanning Tree

P334T-ML supports the IEEE 802.1D Standard Spanning Tree Protocol. This
protocol detects and eliminates logical loops in the network and automatically
places some ports on standby to form a network with the most efficient pathways.
P334T-ML User's Guide
Chapter 1 Overview
3