[188895] in North American Network Operators' Group
Re: CDN, Steam, Origin and NAT.
daemon@ATHENA.MIT.EDU (Blake Dunlap)
Thu Apr 21 12:18:43 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <CY1PR07MB22003BA8D8E025B259BC8A11FA6E0@CY1PR07MB2200.namprd07.prod.outlook.com>
From: Blake Dunlap <ikiris@gmail.com>
Date: Thu, 21 Apr 2016 09:18:20 -0700
To: Steve Mikulasik <Steve.Mikulasik@civeo.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
It really depends on how stupid the nat device is. If the mappings are
global you're looking at about 200 per user, if they aren't you're no
where near an issue.
Either way you're likely fine unless everyone tries to torrent at once
On Thu, Apr 21, 2016 at 9:07 AM, Steve Mikulasik
<Steve.Mikulasik@civeo.com> wrote:
> I do the network for a few lan parties. Last year we had 400+ people on 3=
IPs and didn't have any issues. I don't think those services are that pick=
y anymore since the rise of CGN.
>
> Just a side thing, but my advice is to look into setting up a lancache se=
rver for Steam.
>
>
> -----Original Message-----
> From: NANOG [mailto:nanog-bounces+steve.mikulasik=3Dciveo.com@nanog.org] =
On Behalf Of Laurent Dumont
> Sent: Wednesday, April 20, 2016 8:28 PM
> To: nanog@nanog.org
> Subject: CDN, Steam, Origin and NAT.
>
> Hi,
>
> We are running a small-ish LAN event in Toronto where we have to use a si=
ngle IP address to NAT between 250-350 players. I have been made aware of p=
ossible issues with different services like Steam, Origin and Twitch who ca=
n run into issues when a large number of connections seem to originate from=
a single IP address. I just wanted to poke the list to see if anyone can c=
hime him on their experiences with NATing customers and the impact it might=
have on public services. I am usually using public IP address space for pl=
ayers when designing most large LAN events. Dealing with NAT for a medium-i=
sh amount of customers is not something I am used to do.
>
> It feels silly to worry about that when you assume that WISP
> sometimes(mostly?) use CGN when providing internet to customers. The same=
could be said of most large office buildings around the world.
>
> I appreciate any input on the matter!
>
> Thanks
>
> Laurent
>
