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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>I am also curious if this can be done. <o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>

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<p class=MsoAutoSig><strong><b><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'>Gideon Viator</span></font></b></strong><font
color=black><span style='color:black'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>IT Systems Administrator </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Kaplan Telecommunications</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
dhcp-users-bounces@lists.isc.org [mailto:dhcp-users-bounces@lists.isc.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Frank Bulk<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, April 22, 2009
14:47<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">dhcp-users@isc.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Restricting ONT's
Ethernet port to singe active IP address</span></font><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>In the cable modem and DSL world it’s pretty easy to
restrict the premise equipment to a single IP address.  <o:p></o:p></span></font></p>

<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>         
</span></font></span></span></font><![endif]><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>In the cable modem world that can
be assigned to the CM configuration file or on the CMTS.  <o:p></o:p></span></font></p>

<p class=msolistparagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>         
</span></font></span></span></font><![endif]><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>DSL has a couple of flavors. 
With PPPoA it’s a single IP address per vp/vc.  With PPPoE it can be
nicely controlled on a per username or connection basis.  With
Cisco’s RBE there’s “DHCP Lease Limit per ATM RBE Unnumbered
Interface” to control handing out IP addresses.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>But an RFC-1483-like FTTH implementation doesn’t come
with all those benefits.  We could put a $50 CPE in each home with PPPoE
and be responsible for managing it, but we would prefer to let customers plug
in their own equipment into the ONT, but just get one IP address.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Option 82 support seems like the closest way to get it
done, by creating classes and handing out an static IP, but I understand the
process correctly, it requires generating a class for each Option 82 string and
assigning a static IP address.  That has the negatives of creating classes
in advance and giving out statics when I don’t want to give out statics.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>What it <i><span style='font-style:italic'>seems</span></i>
I want is to be able to use dynamic classes and hand out just one IP address
for each Option 82 string.  I know that dhcp is built around using the MAC
address as the standard identifier, but is there any solutions to the challenge
we’re facing?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>We also want our customers to be able to change CPE
half-way through a lease and not have to call the helpdesk to flush their
legacy DHCP leases because their new CPE doesn’t get an IP address. ;)<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>I’m open for suggestions, and for those who can
design an elegant solution that doesn’t require any re-compiling of code,
a bounty.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Frank<o:p></o:p></span></font></p>

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