looking to buy a Router

[iamskippy]

Originally Posted by JohnR

Could 20 reasons it doesn't work. And once yo do get it working - hope your ARP cache doesn't fail with the provider a/la COX.

Hmmm john are you saying that your isp is responsible for a failing arp cache?
Posted from my iPhone/Mobile device

[JohnR]

Originally Posted by iamskippy

Hmmm john are you saying that your isp is responsible for a failing arp cache?
Posted from my iPhone/Mobile device

No - I'm saying that COX will often need to release THEIR ARP cache if you switch between several devices connected to the cable modem if you don't power it off for less than 6-8 hours . This has happened to me several times when installing equipment on COX Biz class lines.

(also knew that comment would get you out of bed )

[iamskippy]

Originally Posted by JohnR

No - I'm saying that COX will often need to release THEIR ARP cache if you switch between several devices connected to the cable modem if you don't power it off for less than 6-8 hours . This has happened to me several times when installing equipment on COX Biz class lines.

(also knew that comment would get you out of bed )

It did sir my good sir, and please allow me to clarify, they are releasing the ARP stored within YOUR modem, not our CMTS equipment, and depending on the modem, the memory sizes do vary, and this may become a splinter in your operation.

Sadly that is the nature of the beast and is not specific to COX, all ISP that use broadband technology with static ip capabilities have the same issues. Just imagine if you were managing a 1500 work station environment and you used static routing with a self constructed ARP tables inside your routers and you decided to fat finger a number or two.

You are however correct about having to unplug it if you do not want to call in. Some modems however do have resets on the back which should clear all info and depending on the modem you can just access the menu by going to 192.168.100.1 and clearing/resetting the info. Other then that you are correct if its not unplugged for about 6 hours it will not clear itself unless you call in.

The only variable to this is if you do not have a static IP and are configured for DHCP, which is typically a 24 hour lease on a IP address or someone else get assigned the IP while the modem is unplugged.

Thanks for giving me flash backs while recovering

[JohnR]

Ahhh, but only my cable modem based customers (95% of which are COX customers) have this issue - And it is the COX end that has the issue - not the customer equipment

[iamskippy]

Originally Posted by JohnR

Ahhh, but only my cable modem based customers (95% of which are COX customers) have this issue - And it is the COX end that has the issue - not the customer equipment

That is correct because cable modem customers are not DSL 2 different back ends and types of technology.

I would be interested in seeing the accts, and what you are being told, and what issues you are experiencing, when our "alleged" ARP table needs to be cleared.

I am good friends with the Net Ops team and would be more then happy to investigate this for you and get to the " nitty gritty " of the problem and gain a better understand as to what you are experiencing.