[65920] in North American Network Operators' Group
Re: pon's and ethernet to the home
daemon@ATHENA.MIT.EDU (Rubens Kuhl Jr.)
Thu Dec 18 15:34:36 2003
Reply-To: "Rubens Kuhl Jr." <rubens@email.com>
From: "Rubens Kuhl Jr." <rubens@email.com>
To: "Miguel Mata-Cardona" <mmata@intercom.com.sv>,
"Marshall Eubanks" <tme@multicasttech.com>
Cc: <nanog@merit.edu>
Date: Thu, 18 Dec 2003 18:33:39 -0200
Errors-To: owner-nanog-outgoing@merit.edu
> Having heard no answer, I will take a shot :
>
> I actually think that EPONs have a good chance to be the future method
> of distributing video from the "cable" provider to the home. As they
> are passive, it minimizes the amount of equipment out there. A
May be not... all xPON systems have a wavelength window reserved for DWDM
broadcast, that seems more suited to the task.
> 10-Gigabit Ethernet running multicast IP (probably with some form of
> packet tagging like MPLS) could more than support all of the video and
> data needs of a typical cable head-end customer base.
EPON/IEEE 802.3ah is a 1-Gigabit system (actually a 1.25 Gbps but 20% is
used by the 8B10B encoding); I haven't seen any spec for a 10-Gig PON; even
recently standardized GPON is limited to 2.5 Gbps downlink, 1.25 Gbps
uplink.
> You might look at alloptic as a equipment provider here
> http://www.alloptic.com/
Or
http://www.alcatel.com/fttu
http://www.flexlight-networks.com/
http://www.broadlight.com
http://www.teknovus.com
Rubens
