[179840] in North American Network Operators' Group
Re: Thousands of hosts on a gigabit LAN, maybe not
daemon@ATHENA.MIT.EDU (John Levine)
Fri May 8 16:06:47 2015
X-Original-To: nanog@nanog.org
Date: 8 May 2015 20:05:52 -0000
From: "John Levine" <johnl@iecc.com>
To: nanog@nanog.org
In-Reply-To: <CAA93jw6BNYQEh0E8kX8kj1eMqjZsgF87LzWrc_Y0XKCsQyp-Qw@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
>> to have 10,000 entries or more in its ARP table.
>
>Agreed. :) You don't really want 10,000 entries in a routing FIB
>table either, but I was seriously encouraged by the work going
>on in linux 4.0 and 4.1 to improve those lookups.
One obvious way to deal with that is to put some manageable number of
hosts on a subnet and route traffic between the subnets. I think we
can assume they'll all have 10/8 addresses, and I'm not too worried
about performance to the outside world, just within the network.
R's,
John
