the serial number is visible from the network side of the modem. It's used to verify that you are allowed access to the network at all. Verify with them that you are listed as having a customer-provided equipment account.<br>
<br><div class="gmail_quote">On Fri, Feb 15, 2013 at 11:16 AM, Edward Holcroft <span dir="ltr"><<a href="mailto:eholcroft@mkainc.com" target="_blank">eholcroft@mkainc.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div class="gmail_default" style="font-size:small">So today I got a call from Comcast, after all was set up and working fine: they want the "customer serial number" of the modem.</div><div class="gmail_default" style="font-size:small">
<br></div><div class="gmail_default">I have two questions:</div><div class="gmail_default"><br></div><div class="gmail_default">1. Is a "customer serial number" and a "serial number" the same thing? My new modem has a "serial number" right next to the MAC address, but nowhere does it say "customer serial number".</div>
<div class="gmail_default">2. Why would they want or need any additional number? Clearly there's no technical reason to have any further information about my stuff, since everything works.</div><div class="gmail_default">
<br></div><div class="gmail_default">When I see posts like this, I get a little nervous:</div><div class="gmail_default"><a href="http://forums.comcast.com/t5/Customer-Service/Comcast-stole-my-modem/td-p/1022493" target="_blank">http://forums.comcast.com/t5/Customer-Service/Comcast-stole-my-modem/td-p/1022493</a><br>
</div><div class="gmail_default"><br></div><div class="gmail_default">If Comcast does not have the serial number of my equipment, they'd be hard pressed to claim that it's theirs.</div><div class="gmail_default">
<br></div><div class="gmail_default">ed</div></div><div class="gmail_extra"><div><div class="h5"><br><br><div class="gmail_quote">On Fri, Feb 15, 2013 at 12:53 AM, JD <span dir="ltr"><<a href="mailto:jdp@algoloma.com" target="_blank">jdp@algoloma.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I had comcast residential service on dhcp for about 10 yrs. During that time, my IP changed 4 times. Only once did that change cause any issues - I was in China, ddclient automatically changed the IP for the DNS entry, but propagation took about a day to get to over there for some reason. Now when I go on travel, I reduce the TTL for DNS in case I need to take drastic steps for any reason - even with static IPs.<br>
<br>
Setup whatever dynamic DNS service and forget about it. My Mom's connection has a subdomain on dyndns that her router manages so I can reach it easily with ssh.<br>
<div><br>
Edward Holcroft <<a href="mailto:eholcroft@mkainc.com" target="_blank">eholcroft@mkainc.com</a>> wrote:<br>
<br>
>Thanks all for the advice on this.<br>
><br>
>I've just hooked my Motorola surfboard 6121. The process with Comcast<br>
>was<br>
>seamless (after they transferred me three times, that is).<br>
><br>
>The SB is showing bonded downstream and upstream, so I guess my<br>
>neighborhood has the newer infrastructure.<br>
><br>
>I use an old Watchguard Firebox that I upgraded to pfSense as my main<br>
>router, with an IPSec link to my office. I noticed that the VPN link to<br>
>the<br>
>office was still up after the changes, which seemed a little strange to<br>
>me,<br>
>'cos that would mean my IP never changed. Indeed, I still have the same<br>
>IP<br>
>address from Comcast even after switching modems. Does anyone know how<br>
>often those Comcast IP's get renewed? I thought it was fairly<br>
>regularly, at<br>
>the very least when equipment gets replaced.<br>
<br>
</div><div>--<br>
Sent from a Linux system.<br>
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