nanog mailing list archives
Re: IPv6 Default Allocation - What size allocation are you giving out
From: Lee <ler762 () gmail com>
Date: Sat, 11 Oct 2014 11:52:25 -0400
On 10/10/14, Tore Anderson <tore () fud no> wrote:
* Baldur NorddahlWhy do people assign addresses to point-to-point links at all? You can just use a host /128 route to the loopback address of the peer. Saves you the hassle of coming up with new addresses for every link.
Some people think the benefit is worth the hassle.
Why do you need those host routes?
network management, logging, troubleshooting.. you need at least one loopback with a global address.
Most IPv6 IGPs work just fine without global addresses or host routes. https://tools.ietf.org/html/draft-ietf-opsec-lla-only-11
Look at the discussion of the draft - there seemed >>to me<< a clear consensus that using only link local addressing was a Bad Idea. I thought the caveats section made the draft worth publishing, but this bit was left out: And while the caveats hint at it, there's also an operational complexity burden that isn't called out - the ping and NMS/discovery limitations also apply to human operators troubleshooting faults and attempting to understand a deployed topology. LLDP and NDP add a layer of indirection in identifying what devices should be adjacent to a given interface, and only work when there is operational state available and links are up (whereas GUAs on interconnected devices can be compared by configuration alone, telling you what's supposed to be there). Erik Muller so the draft isn't as clear as I'd hoped regarding the caveats :( Best Regards, Lee
Current thread:
- Re: IPv6 Default Allocation - What size allocation for Loopback Address, (continued)
- Re: IPv6 Default Allocation - What size allocation for Loopback Address William Herrin (Oct 12)
- Re: IPv6 Default Allocation - What size allocation for Loopback Address joel jaeggli (Oct 12)
- Re: IPv6 Default Allocation - What size allocation for Loopback Address Mark Andrews (Oct 12)
- Re: IPv6 Default Allocation - What size allocation are you giving out Owen DeLong (Oct 10)
- Re: IPv6 Default Allocation - What size allocation are you giving out Roland Dobbins (Oct 10)
- Re: IPv6 Default Allocation - What size allocation are you giving out William Herrin (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Owen DeLong (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Baldur Norddahl (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Roland Dobbins (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Tore Anderson (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Lee (Oct 11)
- Re: IPv6 Default Allocation - What size allocation are you giving out Owen DeLong (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out William Herrin (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Faisal Imtiaz (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Paul S. (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Owen DeLong (Oct 09)
- Re: IPv6 Default Allocation - What size allocation are you giving out Faisal Imtiaz (Oct 09)