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What exactly is a NonStream Error Rate?

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Oct 13th, 2009 at 12:50pm  
Like the title says what exactly is a nonsteam error rate and what causes it?

Network Time: TUE OCT 13 11:48:00 2009
------------------------------------

Adapter Main Statistics:
------------------------
Signal Strength.............. 94      Stream Msg-Ackd/Nakd........ 101638/84
Flags............... 0x00000000       NonStream Msg-Ackd/Nakd..... 1226/547
Stream Error Rate.......   0.08%      NonStream Error Rate.......  30.85%
UpTime (d:h:m:s).. 000:04:43:20       Aloha Starts................ 875
WakeUp Aloha Starts.......... 9       Ranging Starts.............. 0
Transport Alarm Bit..... 0x0000       Frames Received............. 1779130
Addresses Open............... 7       Frame Errors: CRC/Bad Key... 0/0
Carrier Info....... 007:E:11272       Miscellaneous Problems...... 403
Rate Code........  256k 4/5 (TC)      No Receive Outroute Lock.... 32
Inroute Group................ 1       No FLL Lock................. 427
Inroute...................... 9       No Network Timing Sync...... 648
IQoS ID...................... 4300     Current Modcod............... 8-PSK 8/9 (16)

Ranging Reason: Ranging Done
Inroute Group Selection: Ranged at inroute rate selected by IQoS

Receive Status:  Receiver operational.  (RxCode 5)
Transmit Status: Transmitter ready. (TxCode 8)
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Eric Johnston
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Reply #1 - Oct 13th, 2009 at 6:24pm  
Your stream error rate at 0.08% is rather good.  Greater than 1% is marginal and 5% is bad.

What is also significant is that you are using 256k 4/5 (TC) for your uplink so not stressed at all.  If it was as low as rate 1/2 for long time then marginal (e.g. heavy rain).

Note that the count stats are cumulative, so repeat the record after an hour and note the changes. Large numbers of errors may be accumulated during initial acquisition immediately after power on and during occasional ranging activity.

I am not sure what non-stream errors are but I suspect that these refer to no-acknowledgement for ALOHA bursts.  My, rather simplified, guess is as follows:

Your TDMA uplink is a dynamic shared system, maybe with 50 sites sharing.  If you upload a large file the process up may involve one, or more if necessary, random ALOHA request bursts, which may collide and be lost, to request a time slot allocation for the file transfer, followed by 100 stream bursts in an allocated block of time slots.  A moderately high no-ack rate for ALOHA bursts is normal.  Very old (1970's) TDMA used only ALOHA bursts and the satellite capacity could not be increased above 25-30% efficiency due to burst collisions.  Modern TDMA systems involve the hub allocating time slots on request to particular sites, when required, for the bulk of the traffic such as a file transfer, image download or VoIP phone call. Only a minority of traffic goes ALOHA since it is not sensible to preallocate time slots to all sites, otherwise the TDMA frame would be filled with mostly unused time slots.

There are endless variations on this theme with dynamic allocation of carriers, carriers varying in size, jumping into spare gaps across the transponder etc, all to try and get more used capacity out of the satellite with shared access.

Best regards, Eric.
 
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Reply #2 - Oct 13th, 2009 at 8:05pm  
In my experience, non-stream errors are of no concern whatsoever. To me, anyway. There aren't even any alarm triggers for non-stream errors, so I'm not sure why they're even listed. My guess is comes close to Eric's; in that they may be related to bit errors experienced when your modem requests a seat at the table, and is told to wait for the second serving.

//greg//
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Reply #3 - Oct 14th, 2009 at 5:07am  
Okay, so the nonstream error rate is nothing to worry about.

Well something is up with this thing because I have the HX Business 1000 Premium with one user right now and cant even stay connected to Yahoo Messenger. I always get web acceleration errors.

I just ran a speedtest, with one PC and the system has not been used all night.

80 kbps down
200 kbps up
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Reply #4 - Oct 14th, 2009 at 6:45am  
anyone used pingtest.net yet?

I ran a test and scored an F.

My site is not throttled, I am using one PC connected directly to the modem and this is first thing in the morning after it has not been used since 10pm the night before.

I understand satellite internet has a high latency, but whats up this this packet loss? Is that why web pages never fully load correctly?

...
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« Last Edit: Oct 14th, 2009 at 8:02am by Admin1 »  
 
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Reply #5 - Oct 14th, 2009 at 8:00am  
Quote:
I always get web acceleration errors.

Tell WAFA or Bentley Walker about this, so that they know about it and can investigate.  Sounds to me more like a software problem rather than a satellite radio link problem.

Regarding ping tests it is best to run these yourself from a Command Prompt window (Start, All Programs, Accessories).
Try ping to an IP address e.g. ping 85.148.42.6 -t to check routing.
Try ping to a url e.g ping www.satsig.net -t to check your DNS is correct/working. Do control C to stop so you don't waste your bandwidth or mine.
tracert 85.148.42.6 might reveal where a routing failure exists in the internet.

Best regards, Eric.
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« Last Edit: Oct 14th, 2009 at 9:55am by Admin1 »  
 
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Reply #6 - Oct 14th, 2009 at 9:49am  
Eric Johnston wrote on Oct 14th, 2009 at 8:00am:
Tell WAFA or Bentley Walker about this, so that they know about it and can investigate.  Sounds to me more like a software problem rather than a satellite radio link problem.

Best regards, Eric.


I have told my provider (reseller)
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Reply #7 - Oct 14th, 2009 at 11:00am  
Dear Sir

Please email our support team support@BentleyWalker.com with your modem ESN number as well ..thank you
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Reply #8 - Oct 15th, 2009 at 7:21am  
Pinging www.satsig.net [85.158.42.6] with 32 bytes of data:
Reply from 85.158.42.6: bytes=32 time=826ms TTL=244
Request timed out.
Request timed out.
Reply from 85.158.42.6: bytes=32 time=820ms TTL=244
Reply from 85.158.42.6: bytes=32 time=770ms TTL=244
Reply from 85.158.42.6: bytes=32 time=849ms TTL=244
Reply from 85.158.42.6: bytes=32 time=805ms TTL=244
Reply from 85.158.42.6: bytes=32 time=1405ms TTL=244
Reply from 85.158.42.6: bytes=32 time=768ms TTL=244
Reply from 85.158.42.6: bytes=32 time=955ms TTL=244

Ping statistics for 85.158.42.6:
    Packets: Sent = 10, Received = 8, Lost = 2 (20% loss),
Approximate round trip times in milli-seconds:
    Minimum = 768ms, Maximum = 1405ms, Average = 899ms



Tracing route to s55942006.adsl.wanadoo.nl [85.148.32.6]
over a maximum of 30 hops:

  1     *        *        *     Request timed out.

  2   658 ms   818 ms   679 ms  192.168.14.131

  3     *      747 ms   839 ms  192.168.5.1

  4  1509 ms   758 ms   771 ms 213-209-160-252.ip.skylogicnet.com [213.209.160.252]

  5  1073 ms   839 ms   719 ms  ge-1-1.r03.trn.ip.skylogicnet.com [88.202.127.25]

  6   797 ms   699 ms   729 ms  ge-1-3-0-0.r01.trn.ip.skylogicnet.com [88.202.127.18]

  7   739 ms  1298 ms     *     xe-10-0-0-301.mil-cal-score-1-re0.interoute.net[84.233.225.141]

  8  1296 ms   799 ms   699 ms  ae2-0.fra-006-score-1-re0.interoute.net [89.202.146.90]

  9   727 ms   939 ms   809 ms  ae1-0.ams-koo-score-2-re0.interoute.net [84.233.190.49]

10   847 ms  1158 ms  2090 ms  ae0-0.ams-koo-score-1-re0.interoute.net [84.233.190.1]

11     *      708 ms   817 ms  ams-ix.euro.net [195.69.144.70]

12     *      726 ms   979 ms  PC11.cr1-asd5.nl.euro.net [194.134.161.10]

13   772 ms     *        *     PC18.dr3-asd5.nl.euro.net [194.134.161.22]

14   809 ms   917 ms   799 ms  V520.ar1-Asd-Dim.nl.euro.net [194.134.152.14]

15   857 ms   959 ms   769 ms  s55942006.adsl.wanadoo.nl [85.148.32.6]
Trace complete.
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Reply #9 - Oct 15th, 2009 at 7:24am  
Quote:
Dear Sir

Please email our support team support@BentleyWalker.com with your modem ESN number as well ..thank you


I sent an email.
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Reply #10 - Oct 15th, 2009 at 8:00pm  
well something happened after I posted the last few post. My system is now "red" and shows a sig of 23, receiver not locked to signal and under "system info" it now says "not commisioned"
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Eric Johnston
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Reply #11 - Oct 15th, 2009 at 8:23pm  
In view of the messages above I wonder if the hub has updated the software in your modem and is rebooting your modem?.

Under 30:  No signal, wrong signal or poor receive signal.

Check connectors on LNB cable (most likely), the LNB cable itself, possible movement of the antenna, vehicle parked in the beam, LNB possibly faulty (rare).  The LNB contains an oscillator with may jump in frequency or stop with temperature variations.

Wrong configuration settings can cause under SQF under 30.  This arises prior to initial commissioning or after "reset to factory default" (rf command).

The satellite carrier may be off due to uplink teleport fault.

If the problem persists, call your service provider to verify that the outlink is still up working.  If so, the problem is at your site.

Best regards, Eric
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« Last Edit: Oct 15th, 2009 at 9:57pm by Eric Johnston »  
 
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Reply #12 - Oct 15th, 2009 at 9:13pm  
Im sure they changed something, they replied to the trouble ticket and said they updated some stuff and it should be working fine now, well its just the opposite.

The software date is a old one now, it is Oct 08 now, yesterday it was Aug 09. I checked the cables and the antenna, nothing has changed.

Oh and look at the time of my post, it has not worked all day and still does not work.
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Reply #13 - Oct 15th, 2009 at 9:53pm  
It sounds like your modem has been "reset to factory default" (command rf)  This is sometimes necessary to clear obscure software corruptions.

You will need to go to the config screen and re-enter all the configuration parameters. The receive SQF should come good again.   If this does happen, don't power cycle the modem or otherwise interfere with its activities during the initial several minutes of operation while it is reloading the latest software from the hub.

Best regards, Eric.
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Reply #14 - Oct 16th, 2009 at 5:05am  
All of the info is still in the config window. How do clear it and set it back to default?
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Reply #15 - Oct 16th, 2009 at 9:18am  
I've spoken with Bentley Walker and they will try to get in contact with you.

While you have no receive (SQF =23) the hub cannot see your modem or control it.

All I can suggest for now is:

SQF under 30:  No signal, wrong signal, wrong config or poor receive signal.

Since you did not change the config to cause the fault I suggest you check connectors on LNB cable (most likely), damage to the LNB cable itself, movement of the antenna, vehicle parked in the beam and LNB possibly faulty (rare).

Best regards, Eric.
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Reply #16 - Oct 16th, 2009 at 9:22am  
Sir,

The changes applied by our team initially may relate specificially to the software image the modem is running and not the modems operational configuration.

As changes were applied on some platforms yesterday I would like to confirm your configuration.

My direct email is james@bentleywalker.com, please contact me directly with your ESN serial number and I will be able to provide further clarification. Please be assured of our full attention.
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Reply #17 - Oct 16th, 2009 at 9:34am  
I sent you an email James. Thanks.
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Reply #18 - Oct 17th, 2009 at 6:14pm  
It is back up and running now after 2 days of no service. So at least it works now, I am still getting the Web Acceleration errors.
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