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13
Configuring Bridging
The ATU-R130 can be configured to act as a bridging device between your LAN and your ISP.
Bridges are devices that enable two or more networks to communicate as if they are two
segments of the same physical LAN. This chapter describes how to configure the ATU-R130 to
operate as a bridge.
Note
Using the Bridging Feature
Although the ATU-R130 is preconfigured to serve as a router for providing Internet connectivity to
you LAN, there are several instances in which you may also want to configure bridging:
? Your ISP may use protocols that require bridging with your LAN. The device can be
configured to appear as a bridge when communicating with your ISP, while continuing to
provide router functionality for your LAN.
? Your LAN may include computers that communicate using " layer-3" protocols other than
the Internet Protocol. These include IPX
configured to act as a bridge for packets that use these protocols while continuing to
serve as a router for IP data.
In both cases, you need to specify the device' s interfaces as bridge interfaces.
Defining Bridge Interfaces
To enable bridging{ XE "Bridging:defining interfaces" }, you simply specify the device interfaces on
which you want to bridge data, and then enable bridging mode:
1.
Log into Configuration Manager and click the Bridging tab.
The Bridge Configuration page displays, as shown in Figure 45.
Figure 44. Bridge Configuration page{ XE "Bridge Configuration Page" }{ XE "Pages:Bridge
The table may be empty { XE "Bridge Configuration page" }{ XE "Pages:Bridge
Configuration" }if bridging has not yet been configured.
2.
Select the interface names on which you want to perform bridging and click
For example, select eth-0 (LAN) and eoa-0 (WAN) interfaces. If you use such protocols on a
USB-connected computer, you can also select usb-0.
59
Before changing your bridge configuration, check with your ISP to
determine the type of connection they use to exchange data with
their customer' s DSL modems (such as Ethernet bridging or IP
routing).
®
and AppleTalk
Configuration" }
ATU-R130 ADSL Ethernet Router User' s Guide
®.
. In this case, the device can be
.
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