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290 Appendices

The following diagram shows a four interface router which also supports

bridging. Two of the router’s interfaces (Port 0 and Port 1) are set to bridge

IP, and two interfaces (Port 1 and Port 2) are also set to bridge IPX.

Bridge Groups on a Multiport Router

The diagram illustrates two Bridge Groups. The IP Bridge Group consists of

Port 0 and Port 1. The network segments connected to these two interfaces

appear as a single logical segment for IP routing purposes. That is, they will

share a single IP network number, subnet mask, and broadcast address. IP

communications between these two segments will be bridged, not routed.

The IPX Bridge Group consists of Port 1 and Port 2. The network segments

connected to these two interfaces appear as a single logical segment for IPX

routing purposes. That is, they will share a single IPX network number. IPX

communications between these two segments will be bridged, not routed.

In this example, the segment connected to Port 3 has its own IP network

number, subnet mask, and broadcast address. It also has its own IPX network

number. Thus all IP and IPX communications between this segment and the

two Bridge Groups is routed.

Finally, assuming that non-routable protocols have not been excluded, Ports

0, 1 and 2 all appear as a single physical segment to NetBEUI and DEC LAT.

Port 0

Port 1

Port 2

Port 3

IP Bridge Group

IPX Bridge Group

Multiport Router/Switch

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Compatible-systems 5.4 Manual de usuario Pagina 296