On Monday, December 13, 2010 11:20:20 am Owen DeLong wrote:
> WOL is unfortunately terribly deficient in that the spec. never envisioned 
> the possibility
> of a need for wake on WAN.

Use case I can think of: 'green' data center running VMware VI3 or vSphere with 
DRS and dynamically bringing blades online through WoL to handle load peaks and 
still stay green (when a host is empty, using the VMware API you can take it to 
maintenance mode and shut it down; use WoL to boot it back up when you need it).
 
> Bottom line, it's a non-routeable layer 2 protocol. Your choices boil down to 
> the
> helper address nightmare you describe or proxy servers on every subnet.

In the use case I mention it wouldn't be a problem, since under VMware DRS 
(which relies on VMotion) you have to have layer 2 transparency anyway.  Would 
this not be a use case also for something like VPLS or EoMPLS?

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