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[GeorgeIoak]

I've got a few problems going on but I'll start with a simple one. I had 1 DIR-655 that just wouldn't work on my network so I returned it and purchased another unit. I initially installed the router slowly bringing everything up and things were going well. I don't know if the trouble started when I turned on the one computer which connects with a DWA-552 NIC but all afternoon the attached device list only shows the wireless computer and that computer isn't even connecting reliably!

The computer that I use to log into the router is connected by wire and that computer isn't listed but obviously it got an IP address and is working. I also have a NAS and 2 printers connected by wire and those work but are not listed. They were listed when I first connected them but I haven't seen them on the list all afternoon.

My network looks like this:

[cable modem]----[DIR-655]
                          |  |  |  |
                          |  |  |  |
                          |  |  |  +-----[1Gbit Switch]----[computer #1]
                          |  |  |             |
                          |  |  |             |+-----------------[NAS]
                          |  |  |
                          |  |  |+-------[1Gbit Switch]----[Printer #1]
                          |  |                |
                          |  |                |+-----------------[Printer #2]
                          |  |                |
                          |  |                |+-----------------[802.11g Router, different IP range]
                          |  |
                          |  |+----------[computer #2]
                          |
                          |+-------------[HD-DVD Player]

Hope someone has some ideas on this!

[JHK]

Try to force the connection speed (speed and duplex) on all your Network devices to 10MB Half Duplex to diagnose. And post the outcome please. Just ensure no software firewalls!

[Fatman]

Are the computers that aren't listed connecting to the internet (or each other) just fine?

[GeorgeIoak]

I haven't had a chance to force 10MB Half Duplex. Computer #2 is turned off at this point but computer #1 is fully functional as well as can access the 2 printers.

Here's what the list of devices looks like right now:

IP Address      Name (if any)   MAC
192.168.0.100   IOAKSTORAGE
192.168.0.102   silverstone
192.168.0.119   pentiumd
192.168.0.197   Nexperia
192.168.0.198   PhotoSma
192.168.0.199                           00:80:xxxxxxxx

First I removed the MAC addresses except for the last entry because I wanted to show that the last entry did not have a name even though it did yesterday (this is printer #2 and the name should be BRN_7BE833) THe Brother printer has a configuration tool and I just confirmed that it can communicate with the printer.

The other odd thing about this list is that "PhotoSma" is suppose to be "PhotoSmart" which is my "printer #1" in my diagram. I can print to this printer and I can access it by entering the IP address but I cannot access it by entering http://photosmart/ but I could prior to using this router.

"Nexperia" is another computer that is trying to connect by a wireless connection (using a D-Link DWA-552 card) and that is just a mess so I won't talk about that machine.

Computer #2 is "silverstone" and is a Media Center PC that turned on last night to record a show but I don't even want to access that computer for fear I'll loose what sanity I have left!

This is just strange...

[Lycan]

The topology that you provided is helpful, however you failed to list the OS's being used. You reverence a Media Center PC which implies XP. Please describe all OS's and software firewalls being used on the network so I can properly assist you in trouble shooting this issue.

[GeorgeIoak]

Sorry, all OS's are either WinXP Pro or Home except for the mentioned Media Center PC. As a test I connected a Buffalo Nfiniti and the network is functioning with 100% access on all devices which should prove that there isn't an issue with any cables, switches, or computer NICs.