3Com 3C840 manual 8APPENDIX a Bridging and Routing

A-8APPENDIX A: BRIDGING AND ROUTING

are able to share the same Class B network address, regardless of their location on the bridged network.

Figure A–4Open Systems Interconnection Network Layer Model

Open Systems A routing environment allows stations to communicate indirectly. Interconnection Following the example in under “Routing IP”, let us assume that a station

Network Layer Model on LAN 1 wants to communicate with a network server on LAN 2. The station on LAN 1, constructs a Layer 2 datalink header (see Figure directly above), with the source station's hardware address, and also the destination hardware address of the local router. To direct the packet to its final network destination, the source station must complete the Layer 3 network header with the destination network address of LAN 2.