Comcast is now shipping these modems out for people to replace their SMC modems. We had 4 sites get tanked today. Support has no idea what we are talking about when we explain the issue. Evidently no techs have SMC modems. It has been said that the firmware fixes this issue but our locations are still dropping every 20 minutes.
Eventually we will get to someone that is willing to help
I would like to recommend you try the following:
The ASA5505 Enet Ports are directly speced at 100MPS. So, whatever Netgear 3000 LanPort 1-4 you have the ASA5505 I-Port plugged into, you need to disable that LanPort's auto-negotiate and set the speed to directly 100MPS and full duplex. ASA5505 are infamous for their EnetPorts not handling the combination auto-negotiate half/full duplex and speed well at all. Therefore, setting both interconnects up direct will prevent any Enet Controller control and data transmission interconnect issues.
Thank you for the response. I placed a switch in between the modem and Firewall to rule this out. I have to many modems in remote locations to travel and fix them all. I wish Comcast would at the very least come clean about the issues with the Netgear. The forums are rittled with issues just like this one and 1 thing in common, Netgear
Has anyone figured this out? If I could put in a static ARP entry, I'm pretty sure it would resolve this issue. . .
Seems its harder and harder to find an SMC to swap-in