grants@usage.csd.unsw.oz (Grant Sayer) (01/30/89)
What is the maximum length for an AppleTalk network ? Thanks in advance Grant Sayer (grants%usage.csd.unsw.oz@munnari.oz)
ksand@appleoz.oz.au ( A/UX Support) (01/31/89)
In article <256@usage.csd.unsw.oz> grants@usage.csd.unsw.oz (Grant Sayer) writes: >What is the maximum length for an AppleTalk network ? > >Thanks in advance >Grant Sayer (grants%usage.csd.unsw.oz@munnari.oz) 300 meter, point to point. Maximum number of nodes is recommended 32 (due to congestion problems), with different zones and bridges between zones you are able to build bigger networks. Other trivia info: Uses statistical contention resolution, i.e. CSMA/CA. Data packets are sent as frames using an HDLC/SDLC format. The data rate is 230.4 Kbits/s (LocalTalk, i.e. RS-422 cable). The node ID is an 8-bit identification number for node addressing on the bus. Node ID 255 is used for broadcasting, node ID 0 is reserved. Node IDs are defined dynamically when you join the network. Actually Appletalk looks a lot like TCP/IP, you have sockets that communicate with each other on different nodes. You have protocol stacks that provide socket-to-socket transport of datagrams (gee, like IP), reliable data streams, reliable Transaction (TCP), name Bindning (you bind a name to a socket ID + node ID) and so on. Hope that helps someone, reg, Kent Sandvik -- Kent Sandvik, A/UX Support Apple Australia - ADA is a virus from outer space ksand@appleoz.oz.au