We went through this internally a month ago, and couldn't get any straight
answers from our ISP's, so we decided to put our circuits to the test. We
found that not only our T1's were "full duplex" but our ATM, PPP, and HDLC
DS3's were able to take inbound + outbound traffic that amounted to more
than 45 Mbit/s.
Soon we'll have POS OC3s and OC12s to test out... but I expect I'll find the
same thing. Our understanding is that since different tx and rx lines are
used, they should have full capacity.
----
Dani D. Roisman
[EMAIL PROTECTED]
> -----Original Message-----
> From: Rakers, Jason [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, April 13, 2000 6:58 AM
> To: Linux Network Mailing List (E-mail)
> Subject: Networking duplex
>
> I was recently asked an intriguing question. Are point-to-point WAN
> circuits (T1 frame relay, T1 dedicated, etc.) full-duplex? In that data
> is
> transmitted and received at the same time. My answer was yes, although I
> never thought of it as full-duplex. Usually when someone says full-duplex
> I
> think of LAN topologies and switches, but not WAN. Interesting.
>
> So, are most WAN topologies full-duplex? I would think point-to-point
> topologies are, but multipoint topologies may not.
>
> Thoughts.
>
> Jason
>
>
>
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