nanog mailing list archives
Re: IPv6 Addressing Help
From: Jack Bates <jbates () brightok net>
Date: Mon, 17 Aug 2009 09:15:23 -0500
Jon Lewis wrote:
On Fri, 14 Aug 2009, David Freedman wrote:Will keep it simple, this is what I (and I suspect many others) do /128 - Loopback (what else?) /126 - Router p2p /112 - Router LAN shared segments (p2mp)Why even go that big on LAN segments? i.e. If you have a LAN/VLAN where you have say 20 devices (routers, switches, etc.) and know you'll never have more than say 50-100 devices, why not go as far as using a /120?
As long as it makes the nibble, I don't think it really matters much. I wouldn't assign anything to a router p2p unless it's on the nibble, just for administrative ease. That being said, presentation in routers is much cleaner using /64's, with perhaps 1 /64 broken into loopbacks, which will still stay relatively short in display. It may be wasteful, but minimal in waste compared to the /48's we hand out to customers.
My first /48 was assigned for internal use, and as an ISP, I doubt I'll ever use it all even with an extreme amount of waste.
My favorite shortcut was 2607:f780::1 which is assigned to the reachability server, as easy as I could make it for customers to ping by number when troubleshooting with the helpdesk.
-Jack
Current thread:
- Re: IPv6 Addressing Help, (continued)
- Re: IPv6 Addressing Help David Freedman (Aug 14)
- Re: IPv6 Addressing Help Owen DeLong (Aug 14)
- Re: IPv6 Addressing Help Randy Bush (Aug 14)
- Re: IPv6 Addressing Help Larry Blunk (Aug 14)
- Re: IPv6 Addressing Help Randy Bush (Aug 14)
- Re: IPv6 Addressing Help Jon Lewis (Aug 14)
- Re: IPv6 Addressing Help David Freedman (Aug 14)
- Re: IPv6 Addressing Help Mark Smith (Aug 15)
- Re: IPv6 Addressing Help Randy Bush (Aug 15)
- Re: IPv6 Addressing Help Mark Smith (Aug 15)
- Re: IPv6 Addressing Help Jack Bates (Aug 17)
- Re: IPv6 Addressing Help Mark Andrews (Aug 14)
- RE: IPv6 Addressing Help David Freedman (Aug 14)
- Re: IPv6 Addressing Help steve ulrich (Aug 14)
- Re: IPv6 Addressing Help Jeroen Massar (Aug 14)
- Re: IPv6 Addressing Help William Herrin (Aug 14)
- Re: IPv6 Addressing Help trejrco (Aug 14)
- Re: IPv6 Addressing Help William Herrin (Aug 14)