Advantages of bus LAN Advantages of bus LAN
802.3 Fast Ethernet 802.12 Demand Priority 802.4 Token Bus 802.11 Wireless networks 802.5 Token ring 802.16 WMAN Broadband wireless access
IEEE 802.3 is the standard for Ethernet LAN. It is a collection of IEEE standards for physical layer and Data link layer's MAC sublayer. According to these standards, the Ethernet LAN card works. IEEE 802.4 is a Token Bus standard which was standardised by IEEE. It grants the Bus physical topology to use token messages to access physical layer.
In a token bus network architecture, the nodes at either end of the bus do not actually meet. In a token ring, the network logically functions as a ring, but is wired as a star.
ethernet
You can't get on the bus without a token.
A token bus uses a shared bus for communication. Hosts on the bus are ordered in a logical ring, with access to the bus coordinated by passing a token (a special packet) around the ring, indicating permission to transmit. The intent is to get the robustness of a simple bus protocol with the deterministic response time of a token ring. Unfortunately, because the bus is shared, each host on the bus must wait for the token to be completely transmitted before it can pass it on. This is in contrast to a token ring, where the token passes through each host with only a few bits delay. This gives the token bus considerably worse latency than a token ring. The reliability of a token protocol over a (CSMA protocl such as Ethernet ) is undermined by the complex protocols needed to recover the token at exactly one host should it become corrupted.
$2, this is a standard set price of any bus token/transit slip in bc
Ethernet
bus token bus
less cable
IEEE 802.4 token bus
How does Token Bus (IEEE 802.4) enforce discipline on a logical ring topology? ----