[121600] in North American Network Operators' Group
Re: Using /31 for router links
daemon@ATHENA.MIT.EDU (Seth Mattinen)
Fri Jan 22 19:53:43 2010
Date: Fri, 22 Jan 2010 16:53:25 -0800
From: Seth Mattinen <sethm@rollernet.us>
To: nanog@nanog.org
In-Reply-To: <20100123004123.GA64506@gweep.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Joe Provo wrote:
> On Fri, Jan 22, 2010 at 04:08:28PM -0800, Seth Mattinen wrote:
>> In the past I've always used /30's for PTP connection subnets out of old
>> habit (i.e. Ethernet that won't take unnumbered) but now I'm considering
>> switching to /31's in order to stretch my IPv4 space further. Has anyone
>> else does this? Good? Bad? Based on the bit of testing I've done this
>> shouldn't be a problem since it's only between routers.
>
> rfc3021 is over 9 years old, so should be no suprise that it works
> well. :-)
>
I'm never surprised anymore by something that should work turning out to
have some obscure quirk about it, so I figured it was worth asking. ;)
~Seth
