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WRT54G wireless (only) latency.. any ideas?

Discussion in 'Networking Issues' started by jasperc, Aug 4, 2005.

  1. jasperc

    jasperc Network Guru Member


    I've searched these forums and haven't come up with anything that looks akin to my problem:

    WRT54G V3, using DD-WRT (V22-r2)--I haven't actually used the Linksys firmware yet ;)--when I connect to one of the ethernet ports, my connections experience no latency.

    When I connect via wireless, all connections are extremely lagged. ssh connections to something on my local network, for example, take almost 1.5 minutes to connect (versus practically instantaneous connection from the wired ports). It doesn't matter what OS I attempt to make the connections (have tried Windows XP, Macintosh OS X and various flavors of linux; all are experiencing latency).

    The problem, I think, is DNS related, as wireless connections do lookups which take a while and then connections occur. ALL connectivity is lagged. I've set up the Linksys correctly, I believe, including supplying it with the DNS servers I normally use (1 of which I admin and use to serve domains). There's a config area on the Linksys that can accept "additonal DNS options," but I have seen nothing that indicates *WHAT* those options might be.

    In addition, I'm getting crappy throughput via wireless and the throughput rate goes up and down constantly, but it appears to pretty much top out at around 10kbps (I'm on 1.54 Mbps DSL, so my rate should peak at ~167kbps for sustained transfers out to the internet).

    I'm coming off of a D-Link 624 where I had none of these issues. I "upgraded" to the WRT for it's ability to do WPA (and I hear that WPA2 so far doesn't work?) and the fact that I could tweak it more than I can my D-Link. Hopefully I haven't wasted $50.

    Thanks in advance for any help!
  2. RTSAnime

    RTSAnime Network Guru Member

    some of your issues might be due to a known bug in the DD-WRT firmware that should be fixed with the next (v23) release. Also the v23 release will add WPA2 support.
  3. jasperc

    jasperc Network Guru Member

    It's not just the DD-WRT firmware, unfortunately. I've just flashed the WRT with the latest Linksys firmware for it (4.6.20) and the exact same problem persists. :twisted:

    I've also done some more testing and it doesn't appear to be a DNS issue; I've attempted to connect to devices by IP address--both on my local network and on the internet at large--and the same latency exists.

    I've talked with a networking tech here at my job (sometimes it's nice to work at a ginormous ISP!) who seems to think, from what I'm describing, that the wireless portion of the unit I have is broken. Maybe I'll return it & try another unit.

    Thanks for your reply!

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