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[p23185]

I know this is not the right board, but cannot find a board for DI-524.  How can I determine if the continuous interruptions on my home network is due to a fault of DI-524 router, a Motorola SB5100 cable modem, or the Cox ISP?

This is what goes on constantly, and it drops the PCs offline and the XBox 360 Live connection.  The lease is set for 7 days.  How can I tell if the router is not accepting the Cox ISP address, the modem, or if there is interruptions in the ISP network?

Jan/20/2010 00:30:51
 DHCP Request success   68.3.209.153
Jan/20/2010 00:30:51
 DHCP Request   68.3.209.153
Jan/20/2010 00:30:49
 DHCP Request   68.3.209.153
Jan/20/2010 00:29:48
 DHCP Request   68.3.209.153
Jan/20/2010 00:28:45
 DHCP Request   68.3.209.153
Jan/20/2010 00:26:38
 DHCP Request   68.3.209.153
Jan/20/2010 00:22:25
 DHCP Request   68.3.209.153
Jan/20/2010 00:13:59
 DHCP Request   68.3.209.153
Jan/19/2010 23:57:07
 DHCP Request   68.3.209.153
Jan/19/2010 23:23:22
 DHCP Request   68.3.209.153
Jan/19/2010 22:15:52
 DHCP Request   68.3.209.153
Jan/19/2010 20:47:57

------------------------
 DHCP Request success   68.3.209.153
Jan/16/2010 12:30:48
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:48
 DHCP Discover   
Jan/16/2010 12:30:46
 DHCP Request no response
Jan/16/2010 12:30:46
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:29
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:21
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:17
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:15
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:14
 DHCP Request   68.3.209.153
Jan/16/2010 12:30:13
 DHCP Discover   
Jan/16/2010 12:30:10
 DHCP Discover   
Jan/16/2010 12:30:10
 System started 

[gunrunnerjohn]

Did you try connecting directly to the modem (after a power cycle) and seeing if you have a problem?  How about resetting the DI-524 router to factory defaults and reconfiguring it?

[JoeSchmuck]

A few questions:

1. Is the Cable Modem the DHCP client?
2. Is the DI-524 the DHCP client?
3. Which unit is posting these messages?  Looks like the cable modem due to the actual cox ip address.

My advice is to ensure only one unit is a DHCP.  In my opinion it should be the Router.  If you can assign static IP addresses to your devices, do it.  I prefer to know the IP address of each equipment.  I would recommend someting like 192.168.1.100 for maybe your computer, 192.168.1.101 for the XBox, and so on.  This way if you really want a DHCP, just set it's limits to 192.168.1.10 through .20 and I'd say 10 slots is pleanty for any home network for visitors on your system.

Even though this is not a router forum, I don't mind helping.

-Joe

[gunrunnerjohn]

Actually, you're wrong about the DHCP server for a cable ISP.

Remember, the cable modem is on the WAN side of the router, and almost all cable ISP's do indeed have DHCP capability and the router is normally set for WAN dynamic addressing.  On the LAN side of the router, most home networks also run the DHCP server.  I normally let it have 100 addresses, and then assign any static IP addresses in the unused area of the subnet.

With a plain cable modem, resetting that router to factory defaults should result in a good wired connection.  For that router, you'll also have a wireless connection, though it'll have no encryption.

[JoeSchmuck]

Sounds good to me.  I have a DSL modem so I didn't think there was any real difference.  When looking up that specific model it recommends using a hub/switch to connect multiple computers to the cable modem, not a router due to it's built in DHCP.

So, guess I'm incorrect with regaurds to this setup, sorry for the bum dope.

-Joe

[gunrunnerjohn]

Most DSL "modems" are really modem/routers.  OTOH, most (at least many) cable DOCSIS modems are plain modems.  Since almost all residential ISP accounts only include a single public IP address, you normally need a router to have more than one machine connected.  With a DSL modem/router, even though it only has one Ethernet connection, you still can just use a switch to expand it, the routing function (NAT) is already there.

[JoeSchmuck]

My DSL modem is old as dirt.  It can connect to a single computer directly or via a router to multiple computers.  It's not fancy.  I do have a newer DSL modem that has NAT and a DHCP but it doesn't maintain the connection very well so it's my backup.  Someday I will have Verizon FIOS whenever they drop the fiber in the ground where I live.  Hopefully it's within a year.

I'm not a big network guy either.  If it works, I'm happy to stop playing with it.  Well, my router is running third party firmware vice the original Linksys firmware, all my components have static IPs, I have a DMZ and use it periodically, I do other things so maybe you could say I dabble in it.  Not a guru for certain.

I haven't see another post from the author here so maybe he/she found the solution.

[gunrunnerjohn]

Even many of the single port DSL modems were really modem/routers.  Why they gave you a router with a single port is another question!