North American Network Operators Group
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Historical
Re: SONET and full duplex
- From: Ron Buchalski
- Date: Fri Jun 08 14:21:36 2001
Vinay,
SONET BLSR rings consist of four fibers and two full duplex paths, where the
working path handles full duplex data, and the protect path sits idle. When
the working path fails, the protect path (the other full duplex path) is
activated, and handles full duplex data.
-rb
From: Vinay Bannai <bannai@pacbell.net>
Reply-To: bannai@pacbell.net
To: Joao Takeda <joao_takeda@optiglobe.com.br>
CC: "'nanog@merit.edu'" <nanog@merit.edu>
Subject: Re: SONET and full duplex
Date: Fri, 08 Jun 2001 10:58:27 -0700
Joao Takeda wrote:
>
>
> Hi, ALL.
>
> Can anyone confirm if links using SONET are full duplex?
> Thanks.
>
> Takeda.
Sonet when deployed in rings tend to have dual rotating rings. Each ring
carries traffic in a particular direction. Each node on the ring
transmits on one of the rings and the other ring is used for receiving.
However when using POS links which tend to point to point, then usually
there are two fibers (one for transmitting and one for receiving). So to
answer your question, most of the SONET links are full duplex.
Vinay
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
|
