Mapping a MAC to an IP...

[Luis Fernando Lacayo]

Sorry everyone, I meant to say phase not face. 

L

On Wed, 2009-01-21 at 10:36 -0600, Luis Fernando Lacayo wrote:

> Todd, 
> 
> have you considered creating a new subnet for servers that are not
> Production ready?  
> 
> During our deployment face, we have what we call a management network,
> we use it for during the deployment face and also for the DELL OM /
> ITA.  When the server is ready for production, we activate the other
> nic to the production network.  
> 
> You can make your second network as large as you want so you will not
> run out of IP's and if you make your lease time long enough you should
> not have a problem. 
> 
> good luck. 
> 
> 
> 
> On Wed, 2009-01-21 at 11:17 -0500, Todd Snyder wrote: 
> 
> > The spot we ran in to this problem the most is on a provisioning network
> > - there can be 1 or 200 servers being provisioned, and we found it
> > simplest at times to just make host declarations, but we want the range
> > for any NEW servers that come in.  Because it's during provisioning
> > stuff, we don't want the IP to change, so we ended up assigning the
> > first IP they were given by DHCP as their static IP.  not a great
> > system, but not something we wanted to fight with, and it just kept
> > growing and growing and growing, as hack jobs tend to do :)
> > 
> > 
> > I will have to give the reservation a shot - thanks!!
> > 
> > Todd.
> > 
> >  
> > 
> > -----Original Message-----
> > From: dhcp-users-bounces at lists.isc.org
> > [mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of Simon Hobson
> > Sent: Wednesday, January 21, 2009 11:00 AM
> > To: Users of ISC DHCP
> > Subject: RE: Mapping a MAC to an IP...
> > 
> > At 10:51 -0500 21/1/09, Todd Snyder wrote:
> > >My understanding is that you have to "break" the range to add host 
> > >declarations.
> > >
> > >This, to me, is the biggest pain I have with DHCP in a a production 
> > >environment.  What could be a nice general range declaration, with some
> > 
> > >hosts entries turns into a bunch of broken up and hard to dissect range
> > 
> > >declarations with hosts declarations sprinkled throughout.  for 5 
> > >entries, it's no biggie, but when putting in 50 or 60 hosts into a /24 
> > >there are a lot of lines. Multiply that by a few /24's and maintenance 
> > >gets to be quite difficult at times.
> > 
> > I've never had a problem that way, but then I'm managed my IP's rather
> > than scattering stuff all over the subnet in a random manner ! 
> > I guess that's no help if you've inherited a network from an admin that
> > just plugged stuff in and let it keep the address it got :-(
> > 
> > Also, if you are in that situation, there is now (I believe) another
> > option - you can mark a lease as reserved and it will be handled the
> > same as a dynamic address EXCEPT that it will be kept for use by the
> > same client and never re-allocated.
> > 
> > --
> > Simon Hobson
> > 
> > Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> > author Gladys Hobson. Novels - poetry - short stories - ideal as
> > Christmas stocking fillers. Some available as e-books.
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> -- 
> ______________________________________________________
> 
> Luis Fernando Lacayo
> Chicago Public Schools
> Senior Unix Administrator
> ITS/ UNIX Infrastructure
> Office: 773-553-3835
> Cell: 773-203-4493
> lflacayo at cps.k12.il.us
> ______________________________________________________
>                "In God we trust, the rest we monitor ..."
> 
> 
> 
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-- 
______________________________________________________

Luis Fernando Lacayo
Chicago Public Schools
Senior Unix Administrator
ITS/ UNIX Infrastructure
Office: 773-553-3835
Cell: 773-203-4493
lflacayo at cps.k12.il.us
______________________________________________________
               "In God we trust, the rest we monitor ..."


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