1. Computer problem? Tech Support Guy is completely free -- paid for by advertisers and donations. Click here to join today! If you're new to Tech Support Guy, we highly recommend that you visit our Guide for New Members.

Network troubleshooting

Discussion in 'Networking' started by spelaben, Jul 6, 2014.

Thread Status:
Not open for further replies.
  1. spelaben

    spelaben Thread Starter

    Joined:
    Jul 6, 2014
    Messages:
    1
    Hey guys, I have some trouble with my home network and I'm running out of ideas. I don't like to ask for help but here I am, a little desperate as well to be honest. :(

    The network components:

    Switch (10 clients, 1 server (Windows Server 2008 R2 with AD/DNS/DHCP), 1 router)

    Now I bought a new Router (ASUS AC66U) for the second floor, which I configured as Accesspoint so I can use WLAN, also connected to the switch.

    I flashed DD-WRT and everything seemed to work fine, but sporadically I lose Internet connectivity on my WLAN connected devices. Later I discovered, that I also lose connection on my clients when that happens.

    I ran a wireshark capture on one of the clients and what happens now (reproducible) is that when I open a URL I get lots of TCP DUP ACK and TCP RETRANSMISSION packets, the site opens very slowly, if at all. Now the interesting part: When I turn off the AC66U and open up a site it instantly loads and there are maybe 1-2 retransmission packets.

    I didn't run the wireshark trace on other firmwares I tried (ASUSWRT Merlin, stock firmware and TomatoUSB by Shibby) but the symptoms are the same.

    In the source of the packets I see the MAC adress of the first router, which connects to my ISP and I guess there is some kind of conflict but I am by no means an expert to network related stuff.

    I would greatly appreciate it if someone could guide me through the setup of DD-WRT to coexist peacefully with the other router or give me some useful hints on how to solve this problem. :)

    Thanks! Please let me know if you need more information on the setup.
     
As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 733,556 other people just like you!

Loading...
Thread Status:
Not open for further replies.

Short URL to this thread: https://techguy.org/1129126

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice