nanog mailing list archives
Re: IPv6 addressing for core network
From: Sam Stickland <sam () spacething org>
Date: Wed, 9 Feb 2011 13:35:03 +0000
On 9 Feb 2011, at 09:48, sthaug () nethelp no wrote:
Is there a NANOG FAQ we can add this to?1- Use Public Ipv6 with /122 and do not advertise to Internet 2- Use Public Ipv6 with /127 and do not advertise to InternetThe all zeros address is the all routers anycast address so on most non-Cisco routers you can't use it, ruling out /127. The top 128 addresses in any subnet are also reserved anycast addresses although they don't do much in practice. So the longest prefix length you should use is /120 and only use addresses 1 - 127.A /127 mask is still the best way to handle real point-to-point links like SDH/SONET today, to avoid the ping-pong problem. Works fine with Cisco and Juniper, not tried with other vendors.
Can you elaborate on this? What's the ping-pong problem? Sam (who's experience is pretty much mostly ethernet)
Current thread:
- RE: Ipv6 addressing for Core network, (continued)
- RE: Ipv6 addressing for Core network George Bonser (Feb 08)
- Re: Ipv6 addressing for Core network Vikas Sharma (Feb 10)
- Re: Ipv6 addressing for Core network Jimmy Hess (Feb 08)
- Re: IPv6 addressing for core network Iljitsch van Beijnum (Feb 09)
- Re: IPv6 addressing for core network sthaug (Feb 09)
- Re: IPv6 addressing for core network Iljitsch van Beijnum (Feb 09)
- Re: IPv6 addressing for core network sthaug (Feb 09)
- Re: IPv6 addressing for core network Mohacsi Janos (Feb 09)
- Re: IPv6 addressing for core network sthaug (Feb 09)
- Re: IPv6 addressing for core network Iljitsch van Beijnum (Feb 09)
- Re: IPv6 addressing for core network sthaug (Feb 09)
- RE: Ipv6 addressing for Core network George Bonser (Feb 08)
- Re: IPv6 addressing for core network Sam Stickland (Feb 09)
- Re: IPv6 addressing for core network sthaug (Feb 09)
- Re: IPv6 addressing for core network David Freedman (Feb 09)
- Too bigs are sacred, was: Re: IPv6 addressing for core network Iljitsch van Beijnum (Feb 09)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network David Freedman (Feb 09)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network Owen DeLong (Feb 09)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network David Freedman (Feb 09)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network Iljitsch van Beijnum (Feb 10)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network David Freedman (Feb 10)
- Re: Too bigs are sacred, was: Re: IPv6 addressing for core network Valdis . Kletnieks (Feb 10)
- Re: IPv6 addressing for core network Owen DeLong (Feb 09)