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>
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