Part one of term paper
Both the physical distance that Local Area Network (LAN) can cover and the number of hosts that can be attached to it are limited. To overcome this limitation, bridges are introduced as devices which connect LANs at the MAC layer. The purpose of bridges is to allow hosts attached to different LANs to communicate as if they were located on the ...

Part two of term paper
... frame so that it reaches its destination. There are two different bridge standards: Source-Routing (SR), which is common in Token Ring environment, and Transparent Spanning Tree (TST), which common in Ethernet environment. The IEEE standard for MAC bridges is ANSI/IEEE 802.1D: MAC Sub-layer Interconnection. Bridge Routing Requirements In general, LANs are low-cost, low-delay, high-bandwidth (e.g., 1-10 Mbps) broadcast channels. A bridged LAN environment preserves the low-delay and high-bandwidth f ...