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Slingbox QOS Settings

Discussion in 'Tomato Firmware' started by adlerfra, Jul 5, 2007.

  1. adlerfra

    adlerfra LI Guru Member

    When I remote into my Slingbox while on travel and I do not have QOS enabled, web browsing slows down considerably for other family members on my LAN. When I enable QOS with a classification for the Slingbox that is lower than all other services things improve considerably. However, I am not sure how to optimize the classification/bandwidth QOS settings.

    1. Since the Slingbox is of course continuously streaming, what would folks recommend so that the LAN performance is still good while at the same time the video in the Slingplayer doesn't get choppy?

    2. Also with regards to the slingbox upload streaming, since I now have upload Powerboost from Comcast am I better off setting my outbound max. bandwidth to 90% of 768 (my base service) or 90% of the powerboost (1500)?
  2. GeeTek

    GeeTek Guest

    I have heard that power boost is a temporary speed increase for a short period of time. How much bandwidth does the sling box use ? Do you know which ports it uses to transmit ?
  3. adlerfra

    adlerfra LI Guru Member

    The slingbox requires 256K minimum continuous. It can use almost any port but I use 443 since it is not blocked at the office.
  4. GeeTek

    GeeTek Guest

    Set the slingbox to a higher priority than other traffic. It will only consume what it needs. The rest of your LAN traffic would then need addition rules to prioritize it within the remaining bandwidth to keep web browsing snappy. Your QOS bandwidth setting should be 95% of the normal rates, not the power boost rate since power boost is a short and temporary burst.
  5. adlerfra

    adlerfra LI Guru Member

    The slingbox sucks up as much upload bandwidth as available; there is no way to control it in the box. That is why I am using QOS to limit it. I want to maintain a steady reasonable quality picture so my thought is to limit the min to say 256 and the max to 512K.

    If I set the slingbox for a min of 256K to max 720 (my max service) even with a lower priority than DNS and Web browsing, doesn't it take some 8 to 10 seconds to see the effect? There would then be a constant back and forth from sluggish to snappy performance in web browsing.

    All comments are appreciated. Thanks.:)
  6. GeeTek

    GeeTek Guest

    I guess it would help if I knew what I was talking about ! :biggrin: I have made extensive use of the QOS system, so I might still be able to help. I would give the SB it's own dedicated class, like class "E". You can specify class "E" to have only 256 K of upload by putting 256 into both boxes in the range control. If you wish any otherr traffic to be able to interrupt the slingbox bandwidth, give that other traffic a higher priority setting (Higher on the list, use strict rule order). If not, put the "E" (slingbox) rule at the top of the QOS rule list and then divvy up the remaining bandwidth amongst the other traffic with rules below it.
  7. adlerfra

    adlerfra LI Guru Member

    You do know what you are talking about!:smile: I specified class "E" with both boxes set to 40%. Strict Rule Ordering enabled. My classification priorities highest to lowest are:

    Class E - Port 443(Src) Slingbox
    Highest - Port 53(Src/Dst) - DNS
    High - Ports 80,443(Dst) - HTTP/HTTPS
    Low - Ports 1024-65535(Dst) - Bulk Traffic

    Slingbox TV video is now smooth, pretty good quality and uninterrupted since it is always dedicated a fixed and sufficient amount of bandwidth. At the same time there is enough "extra" bandwidth for my other services to maintain good performance.
  8. GeeTek

    GeeTek Guest

    Very cool. I am toying with the idea of getting a SlingBox myself. You just gave me a heads up on how it works and how to control it ! Thanks.

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