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May 10, 2008 07:51 PM

Categories: Connectivity and the Internet

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schef4711

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Joined: 02/10/2007

Hi everyone,

I have some troubles to get speed on my slingbox but I don't know why it is so. The box is connected on a Cisco Switch with 100Mbit/s. Any upstream behind on the Cisco Router is up to 100 Mbit/s too. I had tested it with several boxes (on different ports) - each the same effect.

If I will watch the box from inside through a DSL Line of 2Mbit/s which is directly connected through a VLAN to the Cisco Router I don't get more than 850 to 900 kbit/s. If I will do the same from outside around 11.000 kms (with a DSL Line of 5Mbit/s) away on a other continent also I don't get more than 900 kbit/s from the box.

If I will test the same with like FTP from the same subnet on the same Cisco Switch I will get every time the full speed as I will have on the line. On the DSL Lines told above with full speed of 2Mbit/s and 5MBit/s.

Surely the problem isn't on any outgoing Internet Carrier interfaces, Switches or Router and will be a problem within the box I think. Does anyone know that there is a limitation on the boxes from SlingMedia ??

Maybe there is a solution to get the Video-Signal directly to a (Real-)Streaming Server to push it through RealPlayer or anything else which can stream much faster :) Does anybody know a solution like this or any other hint to get the box faster ??

thx a lot

schef

Discussion:    Add a Comment | Comments 1-15 of 15 | Latest Comment

Generic Member Avatar
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May 11, 2008 9:40 AM

You can set manual stream speeds. Try that and see what happens.

Generic Member Avatar
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May 11, 2008 1:43 PM updated: May 11, 2008 1:50 PM

Here is my setup:
S/B (classic) in UK, with Cisco 2811 router; Watching in California on a PC.

Here are my observations:
ISP in UK: Entanet. U/L specified at 3.3Mbps, measured at 2.7Mbs to UK speed test site & 2.2Mbps to US speed test web site.

ISP in US: Speakeasy. D/L specified at 6 Mbps, measured at > 3 Mbps downloading from UK speed test web sites.

Round trip ping: CA to UK S/B and back: 170 milliseconds.

Stream Rate: from UK to Cal: 1.3Mbps tops, 1.1 to 1.2 Mbps typical.

No difference between manually setting speed or allowing S/B to set the speed. FTP rate from UK to Cal: 1.2 Mbps. Also played with MTU size on receiving end, but no improvement.

Interestingly, I can sling from UK to California at around 1.2 Mbps while simultaneously doing an FTP from UK to Calif at 1.2 Mbps.

I suspect two things:

1. R/T ping time is important.

I base this on two observations:

(a) with my previous ISP in Calif (Verizon, with d/l speed from UK speed test sites measured at 2.5Mbps) the ping time was 200 mSec but the UK to Calif stream rate topped out at only about 1.1 Mbps, and

(b) an acquaintance of mine in Long Island area with a ping time of only just over 100 mSec was able to access my UK S/B at speeds of up to 2 Mbps.

2. MTU setting of S/B:

The MTU setting of the S/B itself could be a factor when slinging over long distances.

Anybody have any ideas of how to use the entire b/w of my connection? TIA

Generic Member Avatar
Member
May 11, 2008 4:15 PM

Phil Pham said: You can set manual stream speeds. Try that and see what happens.

Hi,

the only affect - if I will change the Video bitrate to more than 1000 kbps - is that the video isn't clear and the frequency goes down. I only get a little bit better quality if I will change the video size from 320x240 to 640x240 (with slower bitrate). If I will go to video size 640x480 my Core2Duo goes like death and within the whole player.

bye

schef 

Generic Member Avatar
Member
May 11, 2008 6:17 PM

schef - describe how everything is connected. I think you may have something connected incorrectly.

Cymro - are you streaming the same video program as your griendvin long island? Different video pictures will compress differently.

Generic Member Avatar
Member
May 11, 2008 7:09 PM updated: May 11, 2008 7:21 PM

Phil Pham said: schef - describe how everything is connected. I think you may have something connected incorrectly.

Hi Phil,

the box (not only one) is connected on a Cisco Switch (100FE Port) in an own VLAN and all ports don't have any collisions or anything else. The switch ports (for the boxes) are connected directly with the uplink port to a Cisco 7500 Router on a dedicated port.

After this there are two ways to go out (one directly from the router for local traffic and security backup - or the second through a VLAN-Trunk through a Cisco 7400 Series Router to the internatinal connection or to local DSL Lines).

Here is the standard configuration for the boxes :

1.) local DSL : SB - Switch - Router7500 - Trunk - Router7400 - Layer2VLAN - DSLmodem - PC

2.) remote DSL : SB - Switch - Router7500 - Trunk - Router7400 - Internet - DSLmodem - PC

the way through backup way (if the trunk fails or the 7400 has failed connetions) :

1.) local DSL : SB - Switch - Router7500 - Internet - Router7400 - Layer2VLAN - DSLmodem - PC

2.) remote DSL : SB - Switch - Router7500 - Internet - DSLmodem - PC

the way through testing suppose :

1.) local DSL : SB - Switch - Layer2VLAN through Trunk - Router7400 - Layer2VLAN - DSLmodem - PC

2.) remote DSL : SB - Switch - Layer2VLAN through Trunk - Router7400 - Internet - DSLmodem - PC

connection with VPN :

1.) remote DSL : SB - Switch - VPNBox (same IP net) - VPNconnect/Internet - PC

If have tested it in all ways with every time the same effect. So in fact that I have turned on a Server on the same subnet (where the SB is connected) and I know that I will get much more speed in every mode the problem will be the box or the Player.

I have done also an experiment with different ports but without helpfuly more speed. With standard ports like 21 or 80 it was like a desaster with the speed of not more than 50kpbs.

You got a PM to test the speed :)

bye schef

Generic Member Avatar
Member
May 12, 2008 12:30 PM updated: May 12, 2008 12:35 PM

Here some more background information (privatly beetween Phil and me) :


Phil Pham said : I have logged in and verified that it works. I can't stream faster than 635k/s. I tried manually boosting the settings and it started stuttering. My guess is that your upload speed isn't enough or that there is other network activity going on at the same time.

schef4711 said : Surely the upstream should be enough with 100 Mbit/s :) It is not a juke - the boxes are connected in Europe with a 100 Mbit/s FLAT-Internet-Connection :)

I know that with FTP I will get following speeds (depending on the daytime) :

  • to Frankfurt : 40 - 60 Mbit/s (dedicated Server)
  • to NewYork : 10 - 15 MBit/s (dedicated Server)
  • to Miami : 8 - 10 MBit/s (dedicated Server)
  • to Argentina : 3 - 4,5 Mbit/s (5 Mbit/s DSL Line)


Phil Pham said : something funny is going on with your slingbox then. I know other people on the forum that get 2mbs with their slingbox. Do you have another slingbox to test with? Or to move the box to another location?

Generic Member Avatar
Member
May 12, 2008 12:34 PM

Hi @ all,

right now we have installed a lot of boxes. Some on the network described above and some other on a different 100 Mbit/s network with other international carrier upstreams.

But on each box we get the same speed and so the same problem and it means for me that there is a limitation on the box - maybe against the codec ?? Can it be ??

bye

schef 

Generic Member Avatar
Member
May 12, 2008 12:42 PM

what model slingbox do you have?

Generic Member Avatar
Member
May 12, 2008 12:47 PM

Phil Pham said: what model slingbox do you have?

SlingBox Tuner (US version) and SlingBox Pro (US version). I know from a fewer test that in the same LAn segment we got around 4 Mbit with the Pro version. With the Tuner Box around 3 I guess.

bye

schef 

Generic Member Avatar
Member
May 12, 2008 12:57 PM updated: May 12, 2008 12:59 PM

the revisions of the boxes

Tuner :
Product signature 00:00:04
Hardware version 1.0.1
Firmware version 1.0.10

Pro :
Product signature 00:00:01
Hardware version 1.34.1
Firmware version 1.0.39

Maybe with the round-trip times it will be the maximum what the box will deliver remotely. But if the round-trip will a little bit higher the problem is that the video will go down with the quality.

bye schef

Generic Member Avatar
Member
May 12, 2008 8:00 PM

Have you tried setting up the slingbox in another remote location? Or connected to a different router perhaps?

Generic Member Avatar
Member
May 14, 2008 5:18 PM updated: May 14, 2008 5:21 PM

Phil Pham said: Have you tried setting up the slingbox in another remote location? Or connected to a different router perhaps?

yes, we have tested a box also on 2 different locations with the same effect (max. around 900kbit/s). Only with the PRO version we got one time to NewYork (university connection) arround 1,2Mbit/s for a short while.

On the same location we have 3 identical boxes (tuner) which are connected to another different switch/Router and also different 100Mbit/s upstreams with same effect.

bye schef

Generic Member Avatar
Member
May 15, 2008 2:19 AM

That just doesn't make any sense to me. I think its beyond my help. Try calling support or maybe someone else has an idea.

Generic Member Avatar
Member
May 15, 2008 8:37 PM updated: May 15, 2008 8:45 PM

Just found this article.

http://www.slingcommunity.com/article/15266/

Maybe it will help. Seems like there is a cap on these models. But the pro has a cap of 8Mbs

Generic Member Avatar
Member
May 15, 2008 11:55 PM

Phil Pham said: Just found this article. http://www.slingcommunity.com/article/15266/ Maybe it will help. Seems like there is a cap on these models. But the pro has a cap of 8Mbs

I would be more happy if I can get the original 2.5 Mpbs Cry But on LAN i got on the PRO not more than 4 Mpbs. But I am on the way to test something with the boxes. maybe it will help.

Discussion:    Add a Comment | Back to Top | Comments 1-15 of 15 | Latest Comment

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