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Expert Help Required
January 13, 2012
2:09 pm
Yoshki
Active Member
Forum Posts: 3
Member Since:
January 13, 2012
1
Having posted this on the Slingbox Forums I was advised to re-post here where the true experts hang out

 

My Slingbox PRO-HD is located in the UK. I'm connecting to it from Australia.

 

When I connect directly to my cable modem Ethernet port (there is only 1 Ethernet connection available on the modem) using an ethernet cable I get a good streaming speed of ~1800kbps.

 

If I introduce a router (connected to the same Ethernet port) my streaming speed drops to ~50kbps.

 

Here's what I've tried to do to fix/fault find:

 

Reset my Slingbox PRO-HD and Virgin Media Super Hub (UK) to factory default setting and running through setup. – No Change

Open UDP Port 5001 Close TCP Port 5001 on the Virgin Media Super Hub – Streaming speed increases to ~700kbps

Adding the connecting device to the reserved IP address list on the Router DHCP lease. – No Change

Turning off Router(s) firewall(s)/Add my device to the DMZ both in UK and Australia – No change

Turning off/on QoS setting on Router(s) – No Change

 

Contacted my broadband provider in Australia. – They have replaced the Cable modem and tested the line.

Contacted tech support for all Router manufacturers – They have little technical knowledge!

Contacted Sling support – They can connect with a streaming speed of ~1900kbps from Holland. They have tried changing the MTU. – No Change

 

I'm close to giving up on Sling!

 

Here are the details of my setup:

 

In the UK:

Slingbox PRO-HD with the latest firmware.

Virgin Media Super Hub.

Virgin Cable 30Mb Down 3Mb Up

 

In Australia:

Makbook Pro with the lated Slingplayer Plugin and Slingplayer Desktop App

Windows Laptop/Desktop with the latest Slingplayer Plugin.

 

Cisco DPQ3212 Cable modem

Routers tried:

Dlink N300 Model DIR 632

Belkin N300 Model F9K1002AU

OR

Netgear Cable Modem Router CG300

 

Optus Cable broadband

Line speed is 18.45 Mbps (18453 kbps).
Download speed is 2.25 MB/s (2307 KB/s).

 

Any help will be greatly appreciated!

January 13, 2012
8:49 pm
Brandon C
U.S.
Forum Posts: 1168
Member Since:
April 19, 2010
2

Wow you have tried a lot of things.  There are a lot of experienced Slingbox users here. Good to hear that this site was recommended to you.

Here is what I would do. I assume you want a router connected to your modem if not then you would be happy connecting the Slingbox directly to it. smile

Pick a router and then reset the router and modem to default. Turn off any UPNP that you may may turned on in the router confing.

Then go to watch.slingbox and setup remote viewing. Make sure it says that everything it setup.

What this does is make it so you are not using any tcp/udp port forwarding and basically eliminates any mtu issue.

If it sets up then watch using the browser and see what your speeds are. If ok then you can try the standalone Mac or Windows player but first make sure it works ok in the browser.

January 14, 2012
2:43 am
Yoshki
Active Member
Forum Posts: 3
Member Since:
January 13, 2012
3

Brandon C

 

Thank you for your advice. I have already tried toggling UPNP (forgot about that one!)

 

I am beginning to suspect my ISP in Australia (remote end) is restricting my connection. Sling support advised me to contact them and ensure that port 5001 is available.

 

If they are restricting my connection what tests can I perform to check? It doesn't make sense that a direct connection to my modem would by-pass any restriction.

 

I have tried re-configuring my Slingbox and Router in the UK an opened port 4001. This has no effect.

 

Are there servers the Sling website/client contacts that my ISP could be restricting?

January 14, 2012
8:00 am
Brandon C
U.S.
Forum Posts: 1168
Member Since:
April 19, 2010
4

Sling does use Amazon webservices to help relay some streams that could be something your ISP restricts but hard to tell.

 

When streaming what does it show you as your connection type? Ctrl-left click in browser, Alt-Shift-I in Windows player. If you have a port open for tcp then it should show tcp. If not then it will show Relay or SNATT.

You can also do a tracert from your computer to the slingbox's WAN IP and see if there are any huge latency issues.

Another quick and easy test to see if you can reach your Slingbox's open tcp port from whare you are is to do a

Telnet WanIpofSlingbox Openport

IE: telnet 123.12.123.123 5001

Since support said they can connect fine there must be something between you and the Slingbox causing the problem but I don't know why using the router would cause a problem and direct connect to the modem doesn't.

Unless there is double NAT problem. You can read more on that here.

http://boards.portforward.com/viewtopic.php?t=20073

January 15, 2012
1:53 am
Yoshki
Active Member
Forum Posts: 3
Member Since:
January 13, 2012
5

Thanks Brandon C. I have a few follow up questions.

 

When I ctrl Left click in the browser I just get 'about'. Where should I click?

 

PING 86…….. (86……..): 56 data bytes
64 bytes from 86……..: icmp_seq=0 ttl=253 time=103.102 ms
64 bytes from 86……..: icmp_seq=1 ttl=253 time=99.289 ms
64 bytes from 86……..: icmp_seq=2 ttl=253 time=100.121 ms
64 bytes from 86……..: icmp_seq=3 ttl=253 time=95.854 ms
64 bytes from 86……..: icmp_seq=4 ttl=253 time=106.573 ms

— 86…….. ping statistics —
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 95.854/100.988/106.573/3.624 ms
 
Do these results look acceptable?
 
Telnet WanIpofSlingbox Openport IE: telnet 123.12.123.123 5001 - Please explain how do I do this?

January 15, 2012
3:22 am
wearon
New Member
Forum Posts: 2
Member Since:
July 12, 2011
6

I had a bit of trouble when adding a second slingbox and port forwarding on my virgin media hub.

Eventually I found the slingbox setup software was reporting the slinbox was at a different IP address than it was actually on.  I used the Lantricks "Lanspy" software to check its location.

By the way, I opened TCP 500n and not UDP.

Good luck

Phil

January 15, 2012
7:31 pm
Brandon C
U.S.
Forum Posts: 1168
Member Since:
April 19, 2010
7

You should just click in the video while it is playing.

Those are fairly high ping times but not that bad. Try pinging Google.com to see a comparison.

Re: Telnet, From a cmd window you should be able to type in telnet followed by the WAN ip address of where your slingbox is located and then followed by the port you have opened.

IE

Telnet 123.123.12.123 5001

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