Re: [lisp] Mapping system observations

[[e-mail] (Noel Chiappa)]

    > From: Damien Saucez <[e-mail]>

    > However, we observe a much more variable delay now with DDT than before
    > where delays were very stable with time.

Is this variation for a single MR<->{something} interaction, or is this the
overall time from i) an ITR needing a mappping to ii) it getting the mapping?
If the latter, it makes sense that there is more variation.

Previously, the Map-Request was sent over the ALT (via the ALT's root, in
almost all cases) to the ETR, and then the reply came back. Not a lot to vary
there (although the path from the root to the Map-Server would vary a bit).

Now, depending on how the delegation tree is configured (i.e. how many layers
from the root to the Map-Server for the mapping in question), how many of
those delegations are cached in the Map-Resolver the ITR is talking to, etc
you would expect to see a certain amount of variation.

	Noel