jbdemo Jerry
Azusa Pacific University Ed Tech Instructor
Network Transport Systems...

Characteristics of Ethernet Communications...

  • There is no central control that governs data transmission
  • The network is multi-access and all nodes have equal ability to transmit on the network
  • Data units are transmitted as encapsulated
  • Each transmitted packet contains addresses of the sending and receiving nodes
  • Packet addressing includes the ability to specify one node, multiple nodes, or all nodes on the network
  • The packets reach every network node
  • It is the responsibility of the receiving or target node to recognize and accept packets with its address as the destination
  • Data transmission is relatively high speed at 10 or 100 Mbps
  • Efficient error detection reduces transmission delays to a minimum
  • The communication specification discourages the implementation of special features that might lead to incompatible network variations

ATM Compared to Bus Architectures...

  • ATM switching enables data to be transmitted at access speeds appropriate to the type of data sent
  • ATM permits use of higher bandwidths
  • Each ATM connection (communication session) has its own dedicated bandwidth
  • Connection processes are more clearly defined with ATM, since they are handled by switch from point-to-point

Characteristics of Thick Coaxial Cable for Ethernet

  • Device attachments possible every 2.5 meters
  • Maximum cable length is 500 meters
  • Maximum cable length with repeaters is 2500 meters
  • Transmission speed on the cable equals 10 Mbps
  • Up to 100 nodes can be attached per segment
  • Minimum Vp of .77c
  • Maximum Medium Delay per segment is 2165 ns
  • Cable is RG-8
  • Uses 50-ohm terminators
Useful links
Last updated  2008/09/28 07:39:47 PDTHits  337