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About bridging – Allied Telesis AT-WL2411 User Manual

Page 78

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AT-WL2411 Installation and User’s Guide

78

attached to the network. Each hello message contains the LAN ID of the
access point that originated the message. The protocol does not allow
wireless links to exist between access points that do not have matching
LAN IDs.

About Bridging

Wireless end devices operate similarly to other Ethernet products;
therefore, all of your existing Ethernet applications will work with the
wireless network without any special networking software. Figure 31
shows the general architecture of the access point.

Figure 31 General Architecture of the Access Point

By default, wireless traffic is not bridged to a remote IP subnet. Any
access point on a remote subnet that can receive IP hello messages can
establish an IP tunnel; therefore, multiple IP tunnels can exist between
the root access point and a single remote IP subnet.

If bridging is disabled, all traffic for end devices is forwarded between
access points using data link encapsulation, which means that the MAC
source/destination addresses correspond to the access points
originating/receiving the traffic for the end devices. By using data link
encapsulation, you prevent network monitoring tools and other
network components from detecting end device MAC/IP addresses that
belong to the remote subnet. It is strongly recommended that you use
the default setting when you are using IP tunnels to provide mobility of
other routable protocols, such as IPX. In some network installations,
detecting these addresses may generate alarms or cause switches to
behave erroneously. There is no additional forwarding overhead for
disabling bridging in this situation.

Management and Configuration

MIB

DHCP

SNMP

Agent

TCP/IP

TFTP

HTTP

Telnet

File

System

Configuration

Settings

Bridging

Multiport Bridge

Forwarding

Database

Ethernet

Port

Antenna

Connectors

Antenna

Connectors

Ethernet

Connector

RS-232 Connector

Configuration Port

Spanning

Tree

Wireless ARP

Server

Radio

Port 1

Radio

Port 2

IP

Port

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