CISCO RV320 & TWC ISP

[lemondrop9344]

I have a 200/20 Mbps plan from TWC.
Hardware is an Arris SB6183 cable modem and a CISCO RV320 router.
In order to attain the advertised speeds, I frequently need to reset the cable modem. This normally happens when I am not actively using the internet or the 1st thing in the AM when I power up the pc's (there are 2) after having shut them down overnight.
In discussions on the TWC forum, they are saying TWC does not support the RV320, however, this was not an issue when the TWC tech was out here.
Once I reset the cable modem, the speeds jump back up to where they are supposed to be. Looking for some trouble shooting tips to see where the issue really resides.
Thanks in advance.

 

[sfx2000]

Time to find a replacement for the RV320... good device, but time has moved on...

 

[System Error Message]

Consider moving up to ubiquiti or mikrotik or even x86 based such as pfsense or the many UTMs that are around. Make sure to check that the modem isnt at fault though.

 

[lemondrop9344]

At this time, replacing the RV320 is not an option. I am looking for trouble shooting tips which do not include replacing the router (RV320), and, will help me isolate what is causing the issue identified above.
The cable modem is brand new. It replaced an SB6141 so I can attain the higher speeds offered by TWC. I suspect TWC has not loaded their firmware onto the modem as it was activated on the 13th. At this time, replacing the RV320 is not an option. I am looking for trouble shooting tips which do not include replacing the router (RV320). Looking at the status of the modem (192.168.100.1), the error code seems to suggest the latest firmware (TWC loads it from what I understand) is not loaded. The forum response is, 'the router is causing the problem with the modem' and the router is creating the error code.

 

[Nullity]

Are you bridging the modem or doing double-NAT?

 

[lemondrop9344]

I have done nothing to the SB6183 modem other than reset it. The cable modem has no provisions for me to really do anything.
With regards to the RV320 router, I don't see any provisions to bridge it within the various menus, so I assume it's not bridged. I have only one router, my WIFI is with access points... no WIFI routers. To the best of my knowledge I am not doing double NAT.
I have determined TWC does support the RV320 router. So far, all I've done with the RV320 router is assign a password and assign static IP's to the printers and access points. I have a lot to learn.

 

[Nullity]

I have done nothing to the SB6183 modem other than reset it. The cable modem has no provisions for me to really do anything.
With regards to the RV320 router, I don't see any provisions to bridge it within the various menus, so I assume it's not bridged. I have only one router, my WIFI is with access points... no WIFI routers. To the best of my knowledge I am not doing double NAT.
I have determined TWC does support the RV320 router. So far, all I've done with the RV320 router is assign a password and assign static IP's to the printers and access points. I have a lot to learn.

Lot's of ISP's do not "support" devices they do not supply, but that says nothing about whether the device can function flawlessly. Routing is such generic networking function that the RV320 should be able to work.

You should be able to access your modem by surfing to http://192.168.100.1

If you have not read the manual for the Arris SB6183, I would do that. Perhaps read the manual for the RV320 as well.

 

[lemondrop9344]

Lot's of ISP's do not "support" devices they do not supply, but that says nothing about whether the device can function flawlessly. Routing is such generic networking function that the RV320 should be able to work.

You should be able to access your modem by surfing to http://192.168.100.1

If you have not read the manual for the Arris SB6183, I would do that. Perhaps read the manual for the RV320 as well.

 

[lemondrop9344]

Just got off the phone with Tier 3 support a TWC. Information from the TWC forum regarding support was erroneous. They (TWC) have acknowledged there is an issue on there end.
Thanks for the help

 

[sfx2000]

Lot's of ISP's do not "support" devices they do not supply, but that says nothing about whether the device can function flawlessly. Routing is such generic networking function that the RV320 should be able to work.

Cable ISP's will usually have a supported modem list - devices they've tested and approved.

The Arris/Motorola 6183 is pretty common, and if I recall, this is one of Comcast's favorite standalone devices for folks that do not want the home gateway option...

 

[stevech]

Is the Arris CM820A the same as the Motorola SBxxx that is being discussed? DOCSIS 3?
My ISP is Time Warner Cable, So. Calif.

I have the CM820A. I have one router. No double-NAT.
192.168.100.1 works fine for me.
My LAN is 192.168.1.x with the usual 255.255.255.0 mask
There is one ethernet switch between my PC and the router (ASUS) which is connected (WAN) to the cable modem.

I've used three prior Moto cable modems - all used the same 192.168.100.1.

I never quite understood why switches connect the 192.168.100.1 to my LAN. I guess it's just layer 2 switching and the IP address doesn't matter, only the MAC.

 

[System Error Message]

at least try 2 different modems just to make sure. Perhaps updating the modem firmware might help too.

Even with layer 2 switching you can still access the modem if you use the IP address (this is actually quite a problem security wise)

 

[sfx2000]

The Arris/Motorola 6183 is pretty common, and if I recall, this is one of Comcast's favorite standalone devices for folks that do not want the home gateway option...

Whoops - mentioned Comcast, when it should have been TWC in response to OP's question - any event - always check with the provider's list of approved modems if they allow for consumer owned devices (some cableCo's might not)

TWC/Comcast/Charter/Cox, for the most part, support the Moto/Arris devices - they're pretty good - if sometimes a bit spendy compared to other modem vendors...

 

[coxhaus]

The Cisco RV320 router worked fine for me using TWC 300 meg down. I actually got 358 meg down when using DSLreports speedtest. I never had any TWC problems using this router. I would look elsewhere for your problem.

If you can't link to the 192.168.100.1 IP address on the modem it is because you have something configured wrong in your network. Maybe you are using a 16 bit mask instead of a 24 bit mask on your local LAN. I see this a lot on this forum.