<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I believe just about every phone will re-dhcp when reset from CCMAdmin. You should expect the phone to take the lease provided at each DHCP operation. <div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div>-Ryan</div></span>
</div>
<br><div><div>On Oct 12, 2011, at 12:07 PM, Scott Voll wrote:</div><br class="Apple-interchange-newline">at my old place of employment we did it because the 1/2 life of DHCP would cause a short outage on the phones due to the renewing of the DHCP address. Thus we moved to a infinite lease time. But we then upgraded software hardware and in the process needed to change IP's on the CM servers.<div>
<br></div><div>So we needed to change the lease time to something we could easily migrate the day of the upgrade which was 1 day.</div><div><br></div><div>--Scott<br><br><div class="gmail_quote">On Wed, Oct 12, 2011 at 8:51 AM, Stephen Welsh <span dir="ltr"><<a href="mailto:stephen.welsh@unifiedfx.com">stephen.welsh@unifiedfx.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word"><div>Interesting problem,</div><div>I wasn't aware of many people setting an infinite DHCP lease, I assume this is to prevent from the impact of a loss of DHCP server?</div>
<div><br></div><div>I suspect if you go to the phone settings and erase the phones config that will force the phone to re-aquire an IP Address?</div><div><br></div><div>If that worked it would give you the option of using a key press macro and sending the key sequence to the phones remotely, or asking users to perform the sequence for you.</div>
<div><br></div><div>This would only apply to the normal IP Phones, the ATA's would need to be done separately, possibly web browse into each one?</div><div><br></div><div>Thanks</div><div><br></div><font color="#888888"><div>
Stephen</div></font><div><div></div><div class="h5"><div><br></div><div><div>On 12 Oct 2011, at 15:34, Anthony Kouloglou wrote:</div><br><blockquote type="cite">
<div bgcolor="#FFFFFF" text="#000000">
Hi Scott,<br>
if all we need is shut no shut it is bearable.<br>
What is not bearable is unplug and replug (all devices are non poe)
of their powercube :-(<br>
<br>
Regards<br>
Anthony<br>
<br>
<div>
<br>
</div>
On 12-Oct-11 17:30, Scott Voll wrote:
<blockquote type="cite">it's been too long ago for me to be sure.... but I
think when we moved to new CM hardware and changed IP's this is
what we did...... BUT I think I did a shut no shut on the
switches.
<div><br>
</div>
<div>Scott<br>
<br>
<div class="gmail_quote">On Wed, Oct 12, 2011 at 6:56 AM,
Anthony Kouloglou <span dir="ltr"><<a href="mailto:akoul@dataways.gr" target="_blank">akoul@dataways.gr</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi all,<br>
suppose a ip phones (79XX, ATA186, ATA187, 69XX) are
registered to a CUCM and the dhcp has assigned them an
infinite IP.<br>
If i disable this dhcp and set up a new one with different
lease time (a day for example), will the ip phones get the
new settings after i reset them from the CCM admin?<br>
<br>
Regards<br>
<font color="#888888"> Anthony<br>
<div><span style="font-size:10.0pt;color:silver" lang="EN-US"><br>
</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif"" lang="EN-US"></span>
<div> </div>
</div>
</font></div>
<br>
_______________________________________________<br>
cisco-voip mailing list<br>
<a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br>
<a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</blockquote>
</div>
_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><br>
</blockquote></div><br></div></div></div></blockquote></div><br></div>
_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>https://puck.nether.net/mailman/listinfo/cisco-voip<br></div><br></div></body></html>