[41380] in Resnet-Forum
Re: NetBoot/PXE network configuration in the enterprise
daemon@ATHENA.MIT.EDU (Hunter Fuller)
Tue Sep 13 09:35:54 2016
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Date: Tue, 13 Sep 2016 13:35:30 +0000
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From: Hunter Fuller <hf0002@UAH.EDU>
To: RESNET-L@listserv.nd.edu
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We aren't all that experienced in PXE, but I'm curious as to why the
machines would need to be in a single VLAN for all this to work. Since all
the configuration is done DHCP-side, and since TFTP can be routed, I would
say that it should work regardless of the VLAN the system is in.
I would warn against using bootp for this or anything else, unless I'm
missing something.
On Tue, Sep 13, 2016 at 8:30 AM Burkhalter, Chris <chris.burkhalter@yale.ed=
u>
wrote:
> Hi all!
>
>
> I've recently started to tackle the complex issue of enterprise level
> network booting and re-imaging for a large number of PC's and Macs en
> masse. We here at Yale have come to the preliminary conclusion that we'll
> need to configure a virtual LAN that will span all our subnets and layer
> 2/3 networks in order to provide sufficient co-existence for NetBoot and
> PXE to exist and work (along with isolated multicast). Since our clusters
> physically co-exist on networks with other systems we have a particularly
> difficult set of challenges in making this work.
>
>
> Being that I can't be the first person to have done or attempted this I
> wanted to reach out and hear about everyone's experiences. Furthermore, i=
f
> you've done this successfully how was your HP/Cisco/Juniper layer 2/3
> network equipment configured (if at all) to make this work?
>
>
> Our current plan in a nutshell:
>
>
> * Isolate all the systems and consolidate them in to between 4-6 subnets
> campus wide
>
> * configure I.P. helpers for the relaying of necessary DHCP/Bootp/PXE
> broadcasts
>
> * attempt to isolate routing for multicast (to avoid excessive routing
> traffic)
>
>
> Thoughts? Hoping to learn from other's experience :). We are interested i=
n
> hearing your experiences, especially those that dealt with the
> configuration of the network to help us understand how others have done
> this. I've found good resources on Google, but none point to specific
> implementations and their challenges.
>
>
> Many thanks, and looking forward to hearing from you!
>
> Best,
>
> Christopher M. Burkhalter =E2=80=93 ACSP, ACMT
> DSP - Public Computing Services,
> Office of Medical Education
>
> Yale University I.T.S.
> 203-500-3942
> ___________________________________________________ You are subscribed to
> the ResNet-L mailing list.
>
> To subscribe, unsubscribe or search the archives, go to
> http://LISTSERV.ND.EDU/archives/resnet-l.html
> ___________________________________________________
>
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<div dir=3D"ltr">We aren't all that experienced in PXE, but I'm cur=
ious as to why the machines would need to be in a single VLAN for all this =
to work. Since all the configuration is done DHCP-side, and since TFTP can =
be routed, I would say that it should work regardless of the VLAN the syste=
m is in.<div><br></div><div>I would warn against using bootp for this or an=
ything else, unless I'm missing something.</div></div><br><div class=3D=
"gmail_quote"><div dir=3D"ltr">On Tue, Sep 13, 2016 at 8:30 AM Burkhalter, =
Chris <<a href=3D"mailto:chris.burkhalter@yale.edu">chris.burkhalter@yal=
e.edu</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"font-size:12pt;color:#000000;background-color:#ffffff;font-fa=
mily:Calibri,Arial,Helvetica,sans-serif">
<p>Hi all!</p>
<p><br>
</p>
<p>I've recently started to tackle the complex issue of enterprise leve=
l network booting and re-imaging for a large number of PC's and Macs en=
masse. We here at Yale have come to the=C2=A0preliminary=C2=A0conclusion t=
hat we'll need to configure a virtual LAN that will
span all our subnets and layer 2/3 networks in order to provide sufficient=
co-existence for NetBoot and PXE to exist and work (along with isolated mu=
lticast). Since our clusters physically co-exist on networks with other sys=
tems we have a particularly difficult=C2=A0set
of challenges in making this work.</p>
<p><br>
</p>
<p>Being that I can't be the first person to have done or=C2=A0attempte=
d this I wanted to reach out and hear about everyone's experiences.=C2=
=A0Furthermore, if you've done this successfully how was your HP/Cisco/=
Juniper layer 2/3 network equipment=C2=A0configured=C2=A0<span style=3D"fon=
t-family:Calibri,Arial,Helvetica,sans-serif,"Apple Color Emoji",&=
quot;Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","=
Android Emoji",EmojiSymbols;font-size:16px">(if
at all)</span> to make this work?=C2=A0</p>
<p><br>
</p>
<p>Our current plan in a nutshell:</p>
<p><br>
</p>
<p>* Isolate all the systems and consolidate them in to between 4-6 subnets=
campus wide</p>
<p>* configure I.P. helpers for the relaying of necessary DHCP/Bootp/PXE br=
oadcasts</p>
<p>* attempt to isolate routing for multicast (to avoid excessive routing t=
raffic)</p>
<p><br>
</p>
<p>Thoughts? Hoping to learn from other's experience=C2=A0:). We are in=
terested in hearing your experiences, especially those that dealt with the =
configuration of the network to help us understand how others have done thi=
s. I've found good resources on Google, but
none point to specific implementations and their challenges.</p>
<p><br>
</p>
<p>Many thanks, and looking forward to hearing from you!</p>
<div>
<div style=3D"font-size:12pt;color:#000000;background-color:#ffffff;font-fa=
mily:Calibri,Arial,Helvetica,sans-serif">
<div style=3D"font-size:13px;font-family:Tahoma">
<div style=3D"font-size:13px;font-family:Tahoma"><br>
Best,<br>
=C2=A0<br>
Christopher M. Burkhalter =E2=80=93 ACSP, ACMT<br>
DSP - Public Computing Services,<br>
Office of Medical Education<br>
</div>
<div style=3D"font-size:13px;font-family:Tahoma">=C2=A0</div>
<div style=3D"font-size:13px;font-family:Tahoma">Yale University I.T.S.<br>
203-500-3942</div>
</div>
</div>
</div>
</div>
</div>
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</p></blockquote></div>
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