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[AlanSaysYo]

A little background first:

I have a DAP-1522 (firmware v1.21) in bridge mode connected to a DIR-615. The DIR-615 (IP 192.168.0.1) is set as a DHCP server to use addresses in a range of 192.168.0.100-199. The DIR-615 is connected to a 2wire DSL modem, but the DHCP function on the 2wire is disabled (and for good measure it doesn't even use the same subnet). Wireless on the 2wire is also disabled. Default gateway is 192.168.1.254 from the 2wire.

The DAP-1522 has a static IP of 192.168.0.99. It connects to the 615 just fine: I can access the web config for both the 2wire and the 615 from a laptop connected to the 1522. I can access the 1522 web config from a PC connected directly to the 615. In short, everything talks to everything just fine.

Now here's the scenario: the 615 will assign an address to a client (laptop, PC, 360, DVR, whatever). The address will be within range and the client will list its DHCP server as 192.198.0.1 (the 615). Intenet connectivity is great. Everything works, much rejoicing, etc.

Then I wake up the next morning, and device IPs have randomly changed. This has happened to devices connected via wireless, devices hardwired to the 615, and devices hardwired to the 1522 (basically anything). It never happens at the same time to all of them, usually just one or two at a time, and there doesn't appear to be any sort of pattern.

Now here's the funny part: the new IPs are on the same subnet (usually something low like 192.168.0.10) and the devices with the rogue IPs list their DHCP server as 192.168.0.99, which is the static IP of the 1522.  Surely a bridge is not passing out IPs, right? Coincidentally or not, every device that gets one of these rogue IPs no longer connects to the internet. They show the same default gateway of 192.168.1.254 as the devices that work, but the internet access is gone.

Any suggestions? I have been working on this for several days and it is driving me crazy. I don't have any other device on my network capable of pasing out IP addresses, so the culprit has to be the 1522 or the 2wire, and like I mentioned, the 2wire is disabled for DHCP, and the saved settings for it have a completely differenct DHCP scope, so if it was the problem, the IPs would be in a different range.

Edit: After some further testing, it looks like the 1522 is assigning IPs on its own because the 615 router is revoking them seemingly at random. This appears to be a router issue. To workaround I have started using static IPs, which is a shame since the DHCP server should be a core functionality of the 615.

[pellajl]

Sound like a familiar problem with IP address issue. However, I have no issue with the internet connection.

I have the same setup and have found the DIR-615 to have a number of bugs and the areas of concern are:

1. DHCP Reserve list does not work properly. You cannot enter multiple DAP-1522 units as the DIR-615 unit does not pick up the DAP's network device name. Funny, the old DLink router did have any issues.

2. If you have a device with a static IP address in the DHCP range, the DIR-615 does not check the availability of the address before allocating the IP address. Results IP conflicts. Once again, the old Dlink router did not have these issues. Workaround. Ensure the Static IP address are allocated outside the DHCP range.

3. LAN computer table under the Status tab does not contain all devices. Yet the devices may appear in the DHCP table. Static IP address devices do not apprear in this table. As in point 1 above, DAP-1522 device name does not appear in the table. Not sure whether this is a DIR-615 or DAP-1522 problem.

I have reported these issues to Dlink and awaiting their response.


Regards

John

[irok760]

Turn the dhcp server off on the 1522.

[tynopex]

Do you have the switch on the back set to bridge mode? I find the device goes crazy occasionally if left in auto mode.