Re: [mpls] MPLS_RT review of draft-mirsky-mpls-residence-time-06.txt

["Osborne, Eric" <[e-mail]>]

Inline

...

> > It might be worth spending a few lines in the introduction talking about
> who might want to use this and what sort of restrictions it places on a
> network design.
> 
> All the caveats that were discussed in the context of the TICTOC draft apply
> here as well.
> 
> In particular, all packets of timing flows must follow the same path, thus
> ruling out LAG, ECMP, entropy labels, etc.
> Protection switching must also be avoided, since undetected delay changes
> are more detrimental than not receiving timing packets and going into
> holdover.

Guh.  I remember being in the room for some of this stuff.  This essentially boils down to TE LSPs specifically for timing.  This sort of stuff needs to be spelled out very particularly, since these sorts of things aren't obvious to everyone who might consider the technology.  It doesn't have to be much, but IMO this draft needs "here's how to design your network around this protocol".




eric