I 'm having issues with my internet Drops out for 30 seconds every 10 minutes or so (I think...

[G+_Eddie Foy]

I'm having issues with my internet.  Drops out for 30 seconds every 10 minutes or so.  (I think its the router and not the modem WAN IP stays )

 

My subnet is the typical 192.168.1.0/24

My cable modem's management page has an IP of 192.168.100.1

 

Now since the 192.168.0.0 is non routable...

Is there any way to get to the modem from behind the router so I can monitor the signal levels when it gets flakey?

 

Can I pop a switch between the router & hub with a PC with a static 192.168.100.10 IP and get to the modem?

[G+_Eddie Foy]

Almost screw that the cisco 2851 went live.

(but would still be nice to get to the modem directly, maybe a big subnet change)

[G+_Akira Yamanita]

Unless your router specifically blocks that traffic, you should be able to access the Cable modem from behind the router.

[G+_Andrew Branagan]

What's your DHCP release time set to? A typical setting is 1 to 8 days? but it sounds like yours is set to 10 minutes

[G+_Jeff Brand]

I agree with Akira Yamanita that it should be accessible. "Non-routable" is misleading. It should be "non-routable over the internet". You could do a lot of routing within your own network (10.0.0.0 networks are great for this.) In short, an external 192.168.100.x network is reachable as long as it's not also your internal.

 

As far as cutting out: see if you can troubleshoot this further. Can you connect to other devices on the router during the down time? If not, the fast step would be to swap in a new router. If the problem goes away, then consider whether it might be failing hardware.

 

I've had erratic behavior in routers caused by overheating, water damage, RFI, and old age.  (Once, reliable uptime was a matter of sitting on the floor vs a desktop tower.) There's often little to go on besides the fact that replacing it solves the problem.

[G+_Eddie Foy]

I'm down to modem or cable.  Other devices flake out too.  Everything in the house (17+) are all wired other then a phone and tablet.  I'll test the cable (antenna analyzer will check coax beyond short or open conductor). With the Cisco 2851 router its still flaking out.  Signals, sig:noise & power levels look good via modem's management page.

[G+_Jeff Brand]

I meantime check whether they could see each other, not access the Internet at the same time. A file share would be the easiest test.

 

Contact your cable provider. If you reach a competent support specialist, they can check diagnostics on their end. Otherwise, the next step is the modem..

[G+_Eddie Foy]

Oh, when I test other machine's internet connection I remotely log into them, either VNC or SSH, so internal LAN is fine.  (also the Roku is play off a Plex server)

[G+_Eddie Foy]

I'm thinking I cooked the modem (less then 6 months online, But had a blip a few weeks ago and the modem was hot) have a new one on order and a upstream amplifier.  With everything replaced if it still fails its TimeWarner.  (where's my Giber?  (supposedly coming near me, but as only Murphy would have it, I'll miss it by a couple of blocks)

[G+_Jeff Brand]

Time Warner can check signal levels in the meantime. Granted it involves a phone call, not the most pleasant experience.

[G+_Ben Reese]

A simple ping piped out to a file works too. Something like "ping -t Google.com >GooglePing.txt"

I don't think it gives timestamps, but should give some indication of breakage. Also, both devices should have an uptime listed in the maintenance console. If it's rebooting at random then that would probably tell you.

 

Are you renting the modem from TWC or did you buy your own? I know TWC would come replace it if it's theirs, but I wonder if it's still under warranty in case it's yours.

[G+_Eddie Foy]

Neither is rebooting, the down time is too short ~ 10-20 seconds.  (I just hopped on the neighbor's WiFi till I get it resolved :P )

[G+_Ben Reese]

Hehe. Nice if them to share. I rent my modem but have one of my own that I keep around for when their's fails - which happens every year or so.

[G+_Eddie Foy]

Well, they don't share it.  And its WPA2 :P  Others have guests, but sig is weak.

[G+_Ben Reese]

Yeah, some share without knowing it. Many (apparently not in this case) are just ignorant on the concept of a password. I had a neighbor with the SSID of Netgear and no password. One day "Netgear" had changed to something like "SetAPassword" likely leaving that neighbor confused and without Internet. I was nice though and changed it back for them... I needed the backup lol.