QoS question

Discussion in 'DD-WRT Firmware' started by LAGMonkey, Sep 15, 2005.

  1. LAGMonkey

    LAGMonkey Network Guru Member

    Ive got a small question about my router setup. I hear talk of people being able to hammer their internet connections with Bit-torrents and P2P applications whilst still being able to perfom VoIP calls without a problem.
    Currently my problem is that no one can understand me so its an uplink thing and i cant think of anything that ive done wrong, Ive got a 256k uplink and ive set the uplink speed in the firmware to 223k.

    To my knowledge the QoS settings are correct (SIP, skype all using L7). should i lower the uplink to 210? or up it to 230.

    My hardware is WRT54G v2.2 running at 216Mhz using DD-WRT v22 basic
  2. bigjohns

    bigjohns Network Guru Member

    lower the uplink CAP. Set your IP devices to PREMIUM via IP if you can. Set the L7 Protocols, but also set the offending computers to Standard or Bulk.

  3. Lazybones

    Lazybones Network Guru Member

    There are many ways to set it but if you are having problems you will have to set the QoS cap, lower to create a bigger buffer between what is alowd and what your connection can do.

    I set my VOIP box to Premium via mac address.. This ensures that no matter what insternal IP it gets it will be Premium

    I then set the Services Priority of all the P2P networks I use to Bulk..

    Note that the QoS feature does not limit connections, so you should make sure your P2P apps aren't opening too many..
  4. LAGMonkey

    LAGMonkey Network Guru Member

    Thanks, i wasnt entirely sure how the whole system worked. Ill drop the uplink speed to 210 and see what happens with that. All P2P and Bit-torrents have been curtailed at 20k upload and 8 connections so things should start to run smoothly.
  5. knight14th

    knight14th Network Guru Member

    I've still only 128kb upload. I've configured QoS with downspeed at 1024 and upspeed at 128. Bittorrent and edonkey are both "bulk" and skype is "premium".
    Cause both p2p are running on the same computer as my skype this is everything i've configured.
    And well, few days ago I even played Farcry over internet while running bittorrent and there was no lag (~30ms ping). So i think it's enough to bulk a service.
  6. LAGMonkey

    LAGMonkey Network Guru Member

    Ive set it for 210 as stated and i havent made any tests on it as of yet. I know im going to have to reset the speed again in the next few weeks as my internet connection is being upgraded to 10meg down and 384k (telewest).
  7. Grooby

    Grooby Network Guru Member

    you have to configure your voip device at the IP level. The problem is VoIP uses SIP and RTP. SIP setups the session and RTP actually sends the voice data. RTP ports are all over the place. For example Asterisk default is 10000 to 20000.
  8. LAGMonkey

    LAGMonkey Network Guru Member

    Right, thanks for that :) ive gotten it sorted now and managed to make my first decent phone call :cheering:
  9. cgondo

    cgondo Network Guru Member

    so what exactly that you did?
  10. LAGMonkey

    LAGMonkey Network Guru Member

    I first started by reflashing the router with DD-WRT v22 and then increased the Maximum ports to 2045 from 512. TCP and UDP timout were decreased to 900 seconds. I then tested out my internet connection to find out the correct bandwidth avaliable (did 5 tests during the day and then averaged out the result) and then took 90% of those numbers for the Uplink and downlink ports.
    All P2P sofware was then placed in "bulk" with standard HTTP requests being assigned to "standard". All VoIP were assigned to "Premium".
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