nanog mailing list archives
Re: IPv6 addressing for core network
From: Mohacsi Janos <mohacsi () niif hu>
Date: Wed, 9 Feb 2011 11:50:32 +0100 (CET)
On Wed, 9 Feb 2011, sthaug () nethelp no wrote:
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.I know it's immature, but I can't wait for some new hire at vendor C or vendor J to reread the RFCs and implement the all routers anycast address according to spect and then see sparks fly. Like I said, global scope addresses on your router-to-router interfaces is such IPv4 thinking.Global scope addresses on router-to-router interfaces are necessary today for traceroute to work. Some ISPs are *requiring* working traceroute (without MPLS hiding of intermediate hops) in RFPs to transit providers. If you can get router ICMP handling changed such that the ICMP packet generated by traceroute is sent from the loopback address, we might be able to do without global scope addresses on router-to-router interfaces. But until then...
You can do it on C and J vendor. Without link-local ICMPv6 will use loopback0. Example on C:
ipv6 unnumbered loopback0 Best Regards, Janos Mohacsi
Current thread:
- Ipv6 addressing for Core network Vikas Sharma (Feb 08)
- 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)