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Subject: RE: Linux networking question
Date: Thu, 23 Aug 2007 14:56:49 -0800
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E051AF1DD@onstor-exch02.onstor.net>
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Thread-Topic: Linux networking question
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References: <BB375AF679D4A34E9CA8DFA650E2B04E051AF1C6@onstor-exch02.onstor.net>
From: "Maxim Kozlovsky" <maxim.kozlovsky@onstor.com>
To: "Jonathan Goldick" <jonathan.goldick@onstor.com>,
	"Andy Sharp" <andy.sharp@onstor.com>,
	"Tim Gardner" <tim.gardner@onstor.com>

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You can't do that. (As far as I can see).

_____________________________________________
From: Jonathan Goldick=20
Sent: Thursday, August 23, 2007 3:43 PM
To: Maxim Kozlovsky; Andy Sharp; Tim Gardner
Subject: Linux networking question


 << OLE Object: Microsoft PowerPoint Slide >>=20
Do you know of any way in Linux to use DHCP to generate multiple IP
addresses for the same interface? =20
In the above picture, the use case of 10.2.2.1 and 10.3.3.1 for DATA0
can be thought of as either two different virtual servers, or one
virtual server that has multiple IP addresses because of server
consolidation from two original servers.  The use case of 10.1.1.3 for
MGMT1 and 10.2.2.2 for DATA1 is having a different management IP address
from the nfs/cifs traffic on DATA1...but in reality these interfaces are
built from the same real interface FAIL1.

Making the above configuration with static IP addresses is simple, but I
am less clear on how it could be done with DHCP.  I've done a fair
amount of reading already, but nothing has leapt out.


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<TITLE>RE: Linux networking question</TITLE>
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<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">You can</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#000080" =
SIZE=3D2 FACE=3D"Arial">&#8217;</FONT></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#000080" =
SIZE=3D2 FACE=3D"Arial">t</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial"> do that. =
(</FONT><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">As far as I can =
see).</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2>_____________________________________________<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2>From:</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2> Jonathan =
Goldick<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2>Sent:</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2> Thursday, =
August 23, 2007 3:43 PM<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2>To:</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2> Maxim =
Kozlovsky; Andy Sharp; Tim Gardner<BR>
</FONT></SPAN><SPAN LANG=3D"en-us"><B></B></SPAN><SPAN =
LANG=3D"en-us"><B></B></SPAN><B><SPAN LANG=3D"en-us"><FONT =
SIZE=3D2>Subject:</FONT></SPAN></B><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT SIZE=3D2> Linux =
networking question</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT FACE=3D"Times New =
Roman">&nbsp;&lt;&lt; OLE Object: Microsoft PowerPoint Slide =
&gt;&gt;</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"> =
</SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Do you =
know</FONT> <FONT SIZE=3D2 FACE=3D"Arial">of any way in Linux to use =
DHCP to generate multiple IP addresses for the same interface?&nbsp; =
</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">In the =
above picture, the use case of 10.2.2.1 and 10.3.3.1 for DATA0 can be =
thought of as either two different virtual servers, or one virtual =
server that has mult</FONT><FONT SIZE=3D2 FACE=3D"Arial">iple IP =
addresses because of server consolidation from two original =
servers.&nbsp; The use case of 10.1.1.3 for MGMT1 and 10.2.2.2 for DATA1 =
is having a different management IP address from the nfs/cifs traffic on =
DATA1&#8230;but in reality these interfaces are buil</FONT><FONT =
SIZE=3D2 FACE=3D"Arial">t</FONT><FONT SIZE=3D2 FACE=3D"Arial"> from the =
same real interface FAIL1.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Making =
the above configuration with static IP addresses is simple, but I am =
less clear on how it could be done with DHCP.&nbsp; I</FONT><FONT =
SIZE=3D2 FACE=3D"Arial">&#8217;</FONT><FONT SIZE=3D2 FACE=3D"Arial">ve =
done a fair amount of reading already, but nothing has leapt =
out.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>

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