Why do I have to reboot my Comcast router to access some web sites?
I'm seeing some really odd behavior on my office LAN recently. I have Comcast business class service using an SMC 8014 modem/router. No speed problems, but I lose access to specific web sites and then have to reboot the router to get them back. Two web sites in particular I lost access to in the past few days: www.symantec.com and www.logmein.com. No problem accessing numerous others; just one or two. Reboot the router, and they're back.
I hesitate to call Comcast about this without some background info because I suspect they wouldn't believe me. In fact, I probably would not believe a user if one called and told me the same story. I don't have a clue how a router would prevent access from a few specific sites like that. Enlighten me, someone. Thanks.
I hesitate to call Comcast about this without some background info because I suspect they wouldn't believe me. In fact, I probably would not believe a user if one called and told me the same story. I don't have a clue how a router would prevent access from a few specific sites like that. Enlighten me, someone. Thanks.
Larry Struckmeyer MVP
What supplies the DNS settings to the users on the LAN? Is there a Windows or other server, or is this an ad hoc bunch of computers using the router for DHCP and DNS? If so, try using a different DNS provider, such as Google or Verizon, just to see if that fixes it. Otherwise, put the Comcast thingy in bridge mode and get a router/firewall with a bigger cache that does not fill up and to to sleep.
ASKER
No domain here; just a couple of peer-to-peer clients connected to the Comcast router/switch. Default gateway, DNS server and DHCP server all handled by the Comcast router. Next time this happens, I will switch DNS provider and see if that works. Can you point me to an article that talks about router caches filling up and such? This is a new concept to me and need to learn more about it. Thanks.
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ASKER
Well, this is a total surprise to me. Had no idea that those devices had arp caches in them. Makes sense now. On another thread I read that Comcast offers a DOCSIS3 compliant modem/router now which is much superior to the SMC device I have. Gotta call and see if I can get them to put in one of those.