cl2kw@sdcc12.ucsd.EDU (Kevin Walsh) (06/19/87)
We are shopping for some buffered repeaters to make a number of baseband ethernet segments appear as one across a broadband channel. Are there any other functionally equivalent devices that are worth looking at other than the one from Ungermann Bass? Especially for less $$$? Thanks in advance for any responses. Kevin Walsh UCSD Library Systems
ron@topaz.rutgers.edu (Ron Natalie) (06/19/87)
CHIPCOM makes a device called an ethermodem that directly simulates an 10 MHz ethernet over an 18MHz broadband channel. Each box appears to be a transciever (with one or two ports). You use either a normal baseband-baseband repeater such as the DEREP or a data-link level bridge such as the LANBRIDGE to inter- connect your baseband net to this. If you don't want to use the repeater approach, several companies such as Applitek and Bridge make BASEBAND to BROADBAND data-link bridges. Rather than simulating an ethernet on the broadband, these trasnmit the packets to another like box which dumps it back on the remote LAN. They filter packets that can safely remain local to one segment similar to the way the LANBRIDGE works. These boxes both consume one 6 MHz channel (in each direction) on the Broadband. I posted a description of the various broadband ethernet interconnections not too long ago. -Ron