[190568] in North American Network Operators' Group
Re: L3 over OTN vs pure IP/MPLS
daemon@ATHENA.MIT.EDU (McDonald Richards)
Fri Jul 8 19:00:15 2016
X-Original-To: nanog@nanog.org
From: McDonald Richards <mcdonald.richards@gmail.com>
Date: Fri, 8 Jul 2016 16:00:10 -0700
To: =?UTF-8?Q?Manuel_Mar=C3=ADn?= <mmg@transtelco.net>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
This sounds like somebody is trying to sell you equipment.
Can you elaborate on the degradation you're experiencing? Are you sure
you're utilizing all your link bandwidth effectively and packets are not
being stuck in large buffers or crammed into a starving forwarding class?
On Thu, Jul 7, 2016 at 7:43 PM, Manuel Mar=C3=ADn <mmg@transtelco.net> wrot=
e:
> Dear Nanog community
>
> We are currently experimenting TCP degradation issues in some metro marke=
ts
> where there are multiple POPs and the IP packets have to pass multiple L3
> access devices (routers) before reaching the core router. The more L3 hop=
s
> that it goes through the more degradation we see in the Internet service.
> L3 routers have the capacity in terms of pps and BW and we are using just=
a
> small percentage of that capacity but anyway the service is degraded (No
> CRC/Input errors in the links). A couple of vendors are recommending usin=
g
> OTN or MPLS-TP to backhaul the connections from the access to the core bu=
t
> obviously deploying OTN means a considerable amount of capex. The
> flexibility and simplicity of the L3 based access network is great but
> given the performance issues we are experimenting I would appreciate if y=
ou
> can share your experience/recommendation with either OTN or MPLS-TP. Does
> it really make sense to use a OTN/Photonic layer to backhaul the L3
> connections in a metro network?
>
> Your input is greatly appreciated
>
> Thanks and have a great day
>
