[133576] in North American Network Operators' Group
Re: Wake on LAN in the enterprise
daemon@ATHENA.MIT.EDU (Lamar Owen)
Mon Dec 13 11:39:22 2010
Date: Mon, 13 Dec 2010 11:39:04 -0500
From: Lamar Owen <lowen@pari.edu>
To: nanog@nanog.org
In-Reply-To: <BD346C3A-1807-4B2B-AB44-FDFF39F88E40@delong.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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?
