Chapter 1

Overview

 

 

Layer 2 Features

Auto-Negotiation

Every 10/100 port on the Cajun P330 supports Auto-Negotiation which automatically detects and supports the operating mode and speed of a connected device. Auto-negotiation is also supported on the Gigabit Ethernet ports for flow control mode only.

This means that you can simply connect the Cajun P330 to Ethernet or Fast Ethernet equipment at full or half duplex without configuration.

Congestion Control

Congestion control is a key element of maintaining network efficiency as it prevents resource overload.

The Lucent Cajun P330 supports congestion control on all Ethernet ports, using the following:

Back Pressure in half duplex mode

IEEE 802.3x Flow Control in full duplex mode

VLANs

The Cajun P330 VLANs are fully IEEE 802.1Q compliant and can handle up to 3k tagged VLANs.

Special VLAN (Virtual Sideband) for management provides physical security for key applications.

Link Aggregation Group (LAG)

LAG provides increased bandwidth and redundancy for critical high-bandwidth applications such as inter-stack links and connections to servers. You can aggregate the bandwidth of up to eight 10/100Base-Tx ports, two 100Base-FX or 1000Base-X ports.

Load sharing ensures that if one of the port connections fails, the other connections will assume the load seamlessly. Load balancing guarantees that the traffic load at any level will be evenly divided among all the LAG links.

IP Multicast Filtering

IP Multicast allows you to send a single copy of an IP packet to multiple destinations, and can be used for various applications including video streaming and video conferencing.

On LANS, IP Multicast packets are transmitted in MAC Multicast frames. Traditional LAN switches flood these Multicast packets to all stations in the VLAN.

2

Cajun P332MF User’s Guide

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Lucent Technologies P332MF manual Layer 2 Features