Re: addition of TLV to locator ID or locator ID set

[Paul Jakma <paul@clubi.ie>]

On Fri, 23 Sep 2005, Iljitsch van Beijnum wrote:

> Do people really buy lines just to use them as backups? I never 
> understood this.

Yep people do, for cost reasons. It's all about the â's. :)

Eg because the backup was negotiated with a low fixed rental cost in 
return for really high per-MB cost (comparatively at least: maybe 
your 'primary' line you just got exceptionally good rates on). So you 
try avoid using that line, hence it's effectively a backup. Cost can 
also lead to strange things like preferring one line up until some 
quota of traffic is reached and then preferring another, within some 
arbitrary billing period.

Indeed, I'd say cost is as significant a reason for multihoming as 
redundancy is (perhaps even more so, imle).

Shim6 has to be malleable to policy routing (the easiest way to 
achieve this probably is to provide for shimming to be done at an 
'edge' device rather than at each host). If it is not malleable in 
this way it will, I suspect, weigh against shim6.

regards,
--
Paul Jakma	paul@clubi.ie	paul@jakma.org	Key ID: 64A2FF6A
Fortune:
We all live under the same sky, but we don't all have the same horizon.
		-- Dr. Konrad Adenauer