[41382] in Resnet-Forum
Re: NetBoot/PXE network configuration in the enterprise
daemon@ATHENA.MIT.EDU (Osborne, Bruce W (Network Services)
Wed Sep 14 08:16:42 2016
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Date: Wed, 14 Sep 2016 12:13:44 +0000
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: "Osborne, Bruce W (Network Services)" <bosborne@LIBERTY.EDU>
To: RESNET-L@listserv.nd.edu
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Christopher,
We have been doing PXE & NetBoot for many years here at Liberty University=
with Cisco layer 3 switching.
On our Vlan SVI's, we generally have 3 ip helper addresses - DHCP server, P=
XE server, & NetBoot server. The DHCP server handles the IP address leases.=
The PXE server responds with the PXE options. The NetBoot server responds =
with the NetBoot options.
The clients happily ignore what they do not need and everybody happily exis=
ts on separate vlans.
If you wish to contact me off-list I can connect you with our network archi=
tects and our routing/switching team. Since I am working primarily in wirel=
ess, I have not been heavily involved in these particular architecture desi=
gns. I have had to troubleshoot problems, though.
Best regards,
Bruce Osborne
Wireless Engineer
IT Network Operations - Wireless
(434) 592-4229
LIBERTY UNIVERSITY
Training Champions for Christ since 1971
From: Burkhalter, Chris [mailto:chris.burkhalter@YALE.EDU]
Sent: Tuesday, September 13, 2016 9:30 AM
Subject: NetBoot/PXE network configuration in the enterprise
Hi all!
I've recently started to tackle the complex issue of enterprise level netwo=
rk 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 con=
figure 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 an=
d work (along with isolated multicast). Since our clusters physically co-ex=
ist 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 wan=
ted to reach out and hear about everyone's experiences. Furthermore, if 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 ca=
mpus wide
* configure I.P. helpers for the relaying of necessary DHCP/Bootp/PXE broad=
casts
* attempt to isolate routing for multicast (to avoid excessive routing traf=
fic)
Thoughts? Hoping to learn from other's experience :). We are interested in =
hearing your experiences, especially those that dealt with the configuratio=
n of the network to help us understand how others have done this. I've foun=
d 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 - ACSP, ACMT
DSP - Public Computing Services,
Office of Medical Education
Yale University I.T.S.
203-500-3942
___________________________________________________ You are subscribed to t=
he 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 class=3D"WordSection1">
<p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"font-size=
:11.0pt;font-family:"Calibri",sans-serif">Christopher,<o:p></o:p>=
</span></a></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif">We hav=
e been doing PXE & NetBoot for many years here at Liberty Univers=
ity with Cisco layer 3 switching.
<o:p></o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif">On our=
Vlan SVI’s, we generally have 3 ip helper addresses – DHCP ser=
ver, PXE server, & NetBoot server. The DHCP server handles the
IP address leases. The PXE server responds with the PXE options. The NetBo=
ot server responds with the NetBoot options.
<o:p></o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif">The cl=
ients happily ignore what they do not need and everybody happily exists on =
separate vlans.<o:p></o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif">If you=
wish to contact me off-list I can connect you with our network architects =
and our routing/switching team. Since I am working
primarily in wireless, I have not been heavily involved in these particula=
r architecture designs. I have had to troubleshoot problems, though.<o:p></=
o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif">Best r=
egards,
<o:p></o:p></span></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<div>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><b><span style=3D"font-size:10.0pt;font-family:"Ta=
homa",sans-serif;color:black">Bruce Osborne</span></b></span><span sty=
le=3D"mso-bookmark:_MailEndCompose"><span style=3D"font-size:10.0pt;font-fa=
mily:"Tahoma",sans-serif;color:black"><o:p></o:p></span></span></=
p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><i><span style=3D"font-size:10.0pt;font-family:"Ta=
homa",sans-serif;color:black">Wireless Engineer</span></i></span><span=
style=3D"mso-bookmark:_MailEndCompose"><span style=3D"font-size:10.0pt;fon=
t-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></spa=
n></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><b><span style=3D"font-size:10.0pt;font-family:"Ta=
homa",sans-serif;color:black">IT Network Operations - Wireless</s=
pan></b></span><span style=3D"mso-bookmark:_MailEndCompose"><span style=3D"=
font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:=
p></o:p></span></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><span style=3D"font-size:10.0pt;font-family:"Tahom=
a",sans-serif;color:black"> <b>(434) 592-4229</b><o:p></o:p></spa=
n></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><span style=3D"font-size:10.0pt;font-family:"Tahom=
a",sans-serif;color:black"> <o:p></o:p></span></span></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><b><span style=3D"font-size:10.0pt;font-family:"Ta=
homa",sans-serif;color:black">LIBERTY UNIVERSITY</span></b></span><spa=
n style=3D"mso-bookmark:_MailEndCompose"><span style=3D"font-size:10.0pt;fo=
nt-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></sp=
an></p>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"mso-bookma=
rk:_MailEndCompose"><i><span style=3D"font-size:10.0pt;font-family:"Ta=
homa",sans-serif;color:black">Training Champions for Christ since 1971=
</span></i></span><span style=3D"mso-bookmark:_MailEndCompose"><span style=
=3D"font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"=
><o:p></o:p></span></span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"mso-bookmark:_MailEndCompose"><span s=
tyle=3D"font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p>&=
nbsp;</o:p></span></span></p>
<span style=3D"mso-bookmark:_MailEndCompose"></span>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11.0pt;font-family:"=
;Calibri",sans-serif">From:</span></b><span style=3D"font-size:11.0pt;=
font-family:"Calibri",sans-serif"> Burkhalter, Chris [mailto:chri=
s.burkhalter@YALE.EDU]
<br>
<b>Sent:</b> Tuesday, September 13, 2016 9:30 AM<br>
<b>Subject:</b> NetBoot/PXE network configuration in the enterprise<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<div id=3D"divtagdefaultwrapper">
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">Hi all!<o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">I've recently started to tackle the complex issue=
of enterprise level network booting and re-imaging for a large number of P=
C's and Macs en masse. We here at Yale have come
to the preliminary conclusion that we'll need to configure a vir=
tual 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 (alon=
g 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.<o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">Being that I can't be the first person to have do=
ne or attempted this I wanted to reach out and hear about everyone's e=
xperiences. Furthermore, if you've done this successfully
how was your HP/Cisco/Juniper layer 2/3 network equipment configured&=
nbsp;(if at all) to make this work? <o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">Our current plan in a nutshell:<o:p></o:p></span>=
</p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">* Isolate all the systems and consolidate them in=
to between 4-6 subnets campus wide<o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">* configure I.P. helpers for the relaying of nece=
ssary DHCP/Bootp/PXE broadcasts<o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">* attempt to isolate routing for multicast (to av=
oid excessive routing traffic)<o:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">Thoughts? Hoping to learn from other's experience=
:). We are interested in hearing your experiences, especially those t=
hat 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.<o=
:p></o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black"><o:p> </o:p></span></p>
<p style=3D"background:white"><span style=3D"font-family:"Calibri"=
;,sans-serif;color:black">Many thanks, and looking forward to hearing from =
you!<o:p></o:p></span></p>
<div id=3D"Signature">
<div id=3D"divtagdefaultwrapper">
<div>
<div>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"font-size:=
10.0pt;font-family:"Tahoma",sans-serif;color:black"><br>
Best,<br>
<br>
Christopher M. Burkhalter – ACSP, ACMT<br>
DSP - Public Computing Services,<br>
Office of Medical Education<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"font-size:=
10.0pt;font-family:"Tahoma",sans-serif;color:black"> <o:p></=
o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"background:white"><span style=3D"font-size:=
10.0pt;font-family:"Tahoma",sans-serif;color:black">Yale Universi=
ty I.T.S.<br>
203-500-3942<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal">___________________________________________________ =
You are subscribed to the ResNet-L mailing list.
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