nanog mailing list archives
Re: Point 2 point IPs between ASes
From: "Justin M. Streiner" <streinerj () gmail com>
Date: Thu, 29 Jun 2017 08:49:36 -0400 (EDT)
On Thu, 29 Jun 2017, William Herrin wrote:
Heck, I’m gonna do whatever it takes to NOT subnet on bits with my v6deployment. Hopefully with v6, gone are the days of binary subnetting math.
I hedged my bets when I laid out our v6 space at my previous $dayjob. We used /126s for point-to-point links, but carved out a /64 for each point-to-point link in our IPAM system. That way, if we ever encountered a device that wouldn't play nicely with a /126 on a point-to-point link, we could just change the mask to /64 (or something else, if the device requires a byte or nibble boundary) on the interface and any relevant ACLs and not have to re-provision addresses for the link.
I seem to recall that our upstreams generally standardized on /126s for point-to-point interconnects to us. We had one interconnect that was a /64, but that also wasn't a point-to-point link.
jms
Current thread:
- Re: Point 2 point IPs between ASes, (continued)
- Re: Point 2 point IPs between ASes Job Snijders (Jun 27)
- Re: Point 2 point IPs between ASes Tom Beecher (Jun 28)
- RE: Point 2 point IPs between ASes Aaron Gould (Jun 28)
- Re: Point 2 point IPs between ASes William Herrin (Jun 28)
- Re: Point 2 point IPs between ASes Chris Adams (Jun 28)
- Re: Point 2 point IPs between ASes Olivier Benghozi (Jun 28)
- Re: Point 2 point IPs between ASes joel jaeggli (Jun 28)
- Re: Point 2 point IPs between ASes William Herrin (Jun 28)
- RE: Point 2 point IPs between ASes Aaron Gould (Jun 28)
- Re: Point 2 point IPs between ASes William Herrin (Jun 29)
- Re: Point 2 point IPs between ASes Justin M. Streiner (Jun 29)
- Re: Point 2 point IPs between ASes Tom Beecher (Jun 28)
- Re: Point 2 point IPs between ASes Job Snijders (Jun 27)
- Re: Point 2 point IPs between ASes Thomas Bellman (Jun 29)
- Re: Point 2 point IPs between ASes William Herrin (Jun 28)
- Re: Point 2 point IPs between ASes joel jaeggli (Jun 28)
- Re: Point 2 point IPs between ASes Job Snijders (Jun 29)
- Re: Point 2 point IPs between ASes Mark Andrews (Jun 29)
- RE: Point 2 point IPs between ASes Aaron Gould (Jun 30)