Fujitsu BX600 manual Self-Learning MAC Addresses, Automatic Aging for MAC Addresses, Port Security

Features of the IBP Module Introduction

from incoming frames. These user-defined entries are not subject to aging, and are preserved across resets and reboots.

Self-Learning MAC Addresses

The IBP Module enables automatic MAC address learning from incoming packets. The MAC addresses are stored in the Bridging Table.

Automatic Aging for MAC Addresses

MAC addresses from which no traffic is received for a given period are aged out. This prevents the Bridging Table from overflowing.

Port Security

Port security prevents unauthorized users from accessing your network. It allows each port to learn, or be assigned, a list of MAC addresses for devices authorized to access the network through that port. Any packet received on the port must have a source address that appears in the authorized list, otherwise it will be dropped. Port security is disabled on all ports by default, but can be enabled on a per-port basis.

MAC Multicast Support

Multicast service is a limited broadcast service, which allows one-to-many and many-to-many connections for information distribution. Layer 2 Multicast service is where a single frame is addressed to a specific Multicast address, from where copies of the frame are transmitted to the relevant ports.

2.1.2Layer 2 Features

IGMP Snooping

IGMP Snooping examines IGMP frame contents, when they are forwarded by the IBP Module from work stations to an upstream Multicast router. From the frame, the IBP Module identifies work stations configured for Multicast sessions, and which Multicast routers are sending Multicast frames.

Broadcast Storm Control

Storm Control enables limiting the amount of Multicast and Broadcast frames accepted and forwarded by the IBP Module. When Layer 2 frames are forwarded, Broadcast and Multicast frames are flooded to all ports on the relevant VLAN. This occupies bandwidth, and loads all nodes connected on all ports.

VLAN Transparency Supported Features

The IBP supports VLAN transparency feature. All packets will be forwarded without any modifications as they are received.

Link Aggregation

One Aggregated Links may be defined, with up to 8 member ports, to form a single Link Aggregated Group (LAG). This enables:

•Fault tolerance protection from physical link disruption

•Higher bandwidth connections

•Improved bandwidth granularity

•High bandwidth server connectivity

LAG is composed of ports with the same speed, set to full-duplex operation.

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