nanog mailing list archives
RE: Cogent IPv6
From: George Bonser <gbonser () seven com>
Date: Thu, 9 Jun 2011 12:35:13 -0700
Some networks prefer a uniform numbering scheme. /112 allows for reasonable addressing needs on a circuit. In addition, while Ethernet is often used in a point-to-point access circuit, such layouts may change and renumbering would be annoying. Finally, having chunks 4-7 define the circuit and chunk 8 provide the circuit addressing makes it more human readable and is prone to less mistakes by those who suck at math. Jack
I actually see that as a pretty good compromise. You could have all of your point-to-points at a pop in the same /64, you can give them all ::1 and ::2 addressing, and the addressing scheme supports both point-to-point and point-to-multipoint topologies. A customer with multiple locations in a region could run a circuit from each location and they could possibly all be in the same /112. If they want to multihome to you, they run similar links to a different pop in a different /112 in a different /64 that is part of that pop's /48. And the numbering is consistent at the user end. The ::2 site or ::3 site would be the ::2 site or ::3 from both pops with a different prefix. Seems reasonable to me.
Current thread:
- Re: Cogent IPv6, (continued)
- Re: Cogent IPv6 ryan (Jun 08)
- Re: Cogent IPv6 Owen DeLong (Jun 08)
- RE: Cogent IPv6 Kelly Setzer (Jun 08)
- Re: Cogent IPv6 William Herrin (Jun 08)
- Re: Cogent IPv6 Chris Adams (Jun 08)
- Re: Cogent IPv6 Aftab Siddiqui (Jun 08)
- Re: Cogent IPv6 Jack Bates (Jun 09)
- Re: Cogent IPv6 William Herrin (Jun 09)
- Re: Cogent IPv6 Jack Bates (Jun 09)
- Re: Cogent IPv6 Joel Jaeggli (Jun 09)
- RE: Cogent IPv6 George Bonser (Jun 09)
- Re: Cogent IPv6 ryan (Jun 08)
- Re: Cogent IPv6 Chuck Anderson (Jun 09)
- Re: Cogent IPv6 Rob Evans (Jun 09)
- Re: Cogent IPv6 Grzegorz Janoszka (Jun 09)
- Re: Cogent IPv6 sthaug (Jun 09)
- Re: Cogent IPv6 Owen DeLong (Jun 09)
- Re: Cogent IPv6 Chuck Anderson (Jun 09)
- Re: Cogent IPv6 sthaug (Jun 09)
- Re: Cogent IPv6 Iljitsch van Beijnum (Jun 09)
- Re: Cogent IPv6 Ray Soucy (Jun 09)
- Re: Cogent IPv6 Nick Hilliard (Jun 09)