At 04:11 PM 3/15/01, Groupstudy wrote:
>I beg to differ a little here. If you have ever monitored the DHCP servers
>utilization, you will have noted it barely creeps over a percent or
>two...ever. You certainly don't need it running on a high performance
>computer.
OK, I believe you. I was worried about the case of 100s of computers
contacting the DHCP server at once, say first thing in the morning. But I
guess this wouldn't happen unless the lease time ran out on the 100s of
computers at the same time.
Also, I thought he was going to put DHCP services on a router also doing
routing. If he's thinking about putting it on an old router that is no
longer routing, that's different. Could be a lot cheaper than using NT!
Thanks,
Priscilla
>It is also very simple to setup and in the event your DHCP server
>took a dump, you could have another one up and running in about 10 minutes
>provided you wisely documented your original server parameters. The beauty
>of DHCP is also in the fact that is leases IP addresses. When a DHCP server
>crashes it does not affect many clients until their leases expire. In the
>case of NT, the default lease period is three days I believe. This means
>you can essentially live without it for quite a few hours, more than enough
>time to configure and install a new one.
>
>Case in point, I once got a call from a IT manager who had his DHCP server
>take a dive right in front of him. He was managing a 2000 node network and
>using NT for is DHCP services. He was frantic that his users would start
>calling him any time to complain about their not being able to get on the
>network. I told him to calm down and I would be there in about an hour.
>When I got there I was able to retrieve the old DHCP server config files off
>the crashed server and rebuild a new DHCP server on a nearby NT workstation
>(pentium 133 with 32 mb RAM!) and have it up and running in about 45 minutes
>including the newly installed NT Server OS. There were a couple of users
>who called in bacause their leases were obviously renewable at that time. I
>had desktop support reboot their PC's and they were happy. 99% of the
>users didn't even blink. They went about their business as usual and their
>PC's happily re-leased their IP addresses from the new DHCP server after
>their daily shutdowns! Total downtime about 2 hours.
>
>I agree with Pricilla to a certain extent in that I would not condone adding
>DHCP services to a router that performs any kind of routing. I do think it
>would be a good idea to dedicate an old 2500 for it though. Just make sure
>you have a spare one around though in case it takes a dive.
>
>
>
>----- Original Message -----
>From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>To: Eric Waguespack <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
>Cc: ElephantChild <[EMAIL PROTECTED]>
>Sent: Thursday, March 15, 2001 3:03 PM
>Subject: Re: IOS DHCP vs NT DHCP
>
>
> > At 01:52 PM 3/15/01, Eric Waguespack wrote:
> > >does anyone have any links to documentation comparing
> > >the two? or opinions / personal experience to draw
> > >from?
> > >
> > >i really dig the idea of yanking an nt dhcp server out
> > >and replacing it with a 2600/3500 ios router running
> > >dhcp
> >
> > That seems risky to me. A 2600 router has a 68000 CPU of some sort (I
> > think). The same CPU on old Macintoshes. It doesn't have a whole lot of
> > memory. And most importantly it's optimized to do one job: routing.
>Routing
> > is mission-critical. I wouldn't want to take away resources from that
> > essential job.
> >
> > An NT server could be installed on a machine with 512 MB of memory, a 1
>GHz
> > P4 processor, a speedy and large hard drive, etc.
> >
> > Since DHCP is mission critical to most networks, I would want it running
>on
> > a high-performance system that isn't also doing routing.
> >
> > Priscilla
> >
> >
> >
> > >me ccnp/voice mcse ccdp cnx bla bla
> > >
> > >__________________________________________________
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> > ________________________
> >
> > Priscilla Oppenheimer
> > http://www.priscilla.com
> >
> > _________________________________
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________________________
Priscilla Oppenheimer
http://www.priscilla.com
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