Click to See Complete Forum and Search --> : WAP's keep dropping off network


CSC
03-12-2008, 03:40 PM
I manage a small school network. My WiFi access points (mostly D-Link routers configured as access points: DHCP off and the uplink plugged into a LAN port) will work for part of a day then go "Limited Connectivity" (no IP for the wireless workstation) or what is weirder, I get an IP and DNS address on the wireless laptop (after ipconfig release and renew) but no connectivity to the LAN or the Internet. The IP,subnet mask, and DNS are correct for the schools router, so none of my WAP's have reset themselves to router mode and gone rouge.

I've had the "Limited Connectivity" problem with one WBR-2310 since it was new and assumed it was defective. In the last week, I've had the IP and DNS but still no connectivity (I can't ping any other IP's, no connection to the servers or the Internet) on a couple other AP/Router's (DI-524 and 624) and a Netgear FS108 unmanaged switch. I replaced the DI-624 with an actual access point, a D-Link DWL-G700AP and had the same problem. Toggeling power on the AP or the building managed switch doesn't always seem to reset the connection. I finally woke up the port on the building switch by plugging a laptop's wired Ethernet into it.

I have one lab of laptops connected to wired Ethernet. During a normal day, several are borrowed and taked to other rooms where they connect via WiFi. When they are returned, both connections are still active (my student and instructor users are not sophisicated enough to disconnect from the access point or disable wireless). Could the dual connection sudenly be confusing the school's router (each interface would have it's own IP and MAC, so the router should see them as separate hosts)?

In each building, we have a Netgear GS748TP managed switch. These are connected via 100BaseT or fiber to a SonicWall router (new configuration since last fall, so far the contractor has the management page on the SonicWall blocked on the LAN side). I don't see any option on the Netgear switch to automatically refresh any physical port. The network just seems to be "forgetting" the AP's are connected, but most of the time I can log into them from a wired workstation.

I can't think of a configuration adjustment I can make on the AP's or the Netgear swith that will keep them talking. Is there a professional level of AP I should be looking at to match the rest of my equipment?

Thanks