Hi all, I use MultiPing on a PC wired directly to the LAN port of our Comcast SMC Business Gateway. I ping 8.8.8.8, 75.75.75.75, www.multiping.com and one internal LAN ip at 1 sec intervals.
Pretty much everyday the 3 internet addresses go to 100% packet loss. The internal IP is fine. Only powercycling the modem clears it up.

My question is this:
While I am down and Multiping is showing 100% PL, from any PC on the network, including the one that bypasses my switches and is cabled direct to a LAN port on the modem, I can ping the modem, LAN functionality is fine. I can log into the modems GUI and access the diagnostic screen from there I CAN ping internet addresses just fine.
I can ping all the addresses that the Multiping on the PC is showing 100% packet loss for.

Any ideas what could be going on here?
Hope I am explaining this clearly.

Thanks a million!
Glen