[TriLUG] TWC BC periodic internet disconnections

[Stephen Bryant]

Hi Bill,

I ran into similar issues with my home connection, which also uses the Ubee DDW3611. I was able to resolve the issues by putting the modem in bridge mode, and using another system as the router. The bridge mode option isn't available via the modem menu, but you can access it by going to http://<router_ip>/TlModeChange.asp

--
Stephen Bryant



On Apr 11, 2013, at 9:56 AM, Bill Farrow <bill at arrowsreach.com> wrote:

> Hi,
> I'm struggling with the customer support people at TWC Business Class
> over periodic disconnects.  Every 30 hours or so the internet
> connection stops working, sometimes for a minute or two, but other
> times the outage lasts for several hours until someone gets on site to
> power cycle the modem.  One of these outages happened during a VOIP
> conference call with a customer.
> 
> We are using a TWC BC provided Ubee DDW3611 modem (details below), and
> we have a static IP.  Connected to the modem is an Ubuntu 12.04 server
> running Zentyal 3.0 (Small Business Server).  This Linux server is
> configured with a static IP on the WAN and  uses a fairly complex
> iptables firewall config.  The Ubee modem is configured with a static
> IP, and the server uses that as the gateway IP.
> 
> I am now monitoring this from home using a bash script that pings
> several IP addresses every minute.  When the TWC BC internet
> disconnects, I the script is unable to ping the modem's static IP or
> the linux servers static IP.
> 
> After talking with TWC BC support, they added the modem to their
> "Watch List" for a 72 hour period.  During that time we lost internet
> again and called support.  They claimed there was nothing wrong with
> the modem, and it must be our equipment and we should power cycle it.
> I'm not convinced, so I am asking here - have I missed something on my
> Linux server that could be causing this outage, or is it really a TWC
> BC problem ?
> 
> 
> 
> Cable Modem : DOCSIS 3.0 Compliant
> MAC Address : C4:17:FE:xx:xx:xx
> Serial Number : BC11U2900xxxx
> Boot Code Version : 10.1.2
> Software Version : 8.6.2009
> Hardware Version : 4.31
> CA Key : Installed
> 
> Bill
> -- 
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