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Topic # 108830 6-Sep-2012 13:14
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Should I be happy with this?? or is there a better test for my connection?




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xpd

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  Reply # 682320 6-Sep-2012 13:34
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More info please...

What connection are you on ?
Which ISP ?
What are you pinging ?
Time of day ?
Anything else running on your network ? (Torrents etc)




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  Reply # 682324 6-Sep-2012 13:38
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If that is to your modem....then no, this is not good :)




 
 
 
 


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  Reply # 682344 6-Sep-2012 14:11
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Never pee into the wind!

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  Reply # 682351 6-Sep-2012 14:20
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OP that trace tell us so little that I expect you'll get equally useless comments back.

That's the sort of ping I get on my wifi network when someone else is pulling a chunk of data though the network at the same time, it's quite normal.





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  Reply # 682364 6-Sep-2012 14:36
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johnr: Never pee into the wind!


lol, it looks like that doesn't it - hence my question.

its a wireless link and that's the base station my radio connects to. i was about to post a comparative ping to trademe but then my connection went down.... *rolls eyes*

pinging my router from any machine on the lan is always <1ms



the reason i ask is if i do a comparative ping say from a telecom adsl connection i get this













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  Reply # 682380 6-Sep-2012 14:47
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here's my WAN interface - as you can see it's not up to much :)





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  Reply # 682384 6-Sep-2012 14:57
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You are going to need to be more specific I'd say.

What kind of wireless connection?
From whom?
Where did you get that IP from and how do you assert that it's just at the other side of your wireless link?



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  Reply # 682395 6-Sep-2012 15:23
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ubergeeknz: You are going to need to be more specific I'd say.

What kind of wireless connection?
From whom?
Where did you get that IP from and how do you assert that it's just at the other side of your wireless link?


5.8GHz point to multipoint,
The obfuscated IP is the gateway my router is statically configured with. The other IP is of course trademe.co.nz
I dont think the ISP's name is relevant here.

My point is not matter where I go and carryout a ping to something like trademe (who I assume will be fairly well connected and resourced) the results are always consistent as per the Telecom ping above. No matter if its wireless from compass, dsl from vodafone, telecom or clear etc and all throughout the north island. All of these connections also use similar hardware to mine (cisco routers/switches etc) and have all been configured by me. None of them jump up and down and vary so wildly as mine. I'm assuming that the problem (which I'm querying given the varying latency of the pings) lies closer to home, hence my inclusion of the first ping to my routers WAN gateway.

Here's one taken just now from a compass wireless connection in Hamilton



And another at the same time from a Vodafone DSL connection in Auckland










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  Reply # 682402 6-Sep-2012 15:37
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ya, post an MTR report so we can see where the issue is.

The problem could be all sorts of things.

Do you control both ends of the link?

Have you done a recent site survey to check if something else is in the 5.8 space you're using?

What channel are you actually using?

What width is the channel?

Are you using NV2? That can impact latency.

Is the router at the other end congested? Is this really a wireless problem at all?

Are there any other layer 2 devices along the way that could be causing the problem?

Is the connection dropping packets?

Are you getting CRC errors?

D




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  Reply # 682430 6-Sep-2012 16:24
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Link is provided by WISP and they control both ends.
I live rurally and there's nothing around me for about 5k's so I'd hazard a guess there no local interference. The link is about 11k but I'm told it is rock solid with good db margins.
I'm certainly not running any 5.8Ghz gear so no interference likely here.
I believe the base stations are MikroTik so maybe NV2 is being used (but isn't this supposed to improve latency with Athereos Chipsets?
This is consistent and replicable at any time of the day or night (month, year, half decade). So unless it is constantly congested, I suspect (+hope) it isn't congestion.
No packet loss or errors that I can see. WAN interface above certainly isnt showing any CRC errors.

Here's how its connected. RADIO<->871ROUTER<->3COM4924SWITCH<->WORKSTATION









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  Reply # 682446 6-Sep-2012 16:47
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pffft.... if you're going to keep all the info confo then it just becomes totally meaningless.

That latency is shocking for 5km.

I've got 3ms on that distance.

D




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  Reply # 682448 6-Sep-2012 16:58
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Yeah it's pretty plain that the 2nd hop there is not ideal.  Although I'm not sure what performance you can expect from a 5.8Ghz link over 11km, you would think latency would be less than 60-180ms and not so variable.

I would hazard a guess that you are getting a lot of errors at a "physical" level that are being covered up by retransmits and a large amount of interleave.  

Raise it with the supplier and let everyone know how you get on.



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  Reply # 682449 6-Sep-2012 16:58
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DonGould: pffft.... if you're going to keep all the info confo then it just becomes totally meaningless.

That latency is shocking for 5km.

I've got 3ms on that distance.

D


i dont know why the specifics matter much, they just show a first hop (local router), second hop gateway and then a series of other non-descript devices inbetween the source and the host.



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  Reply # 682453 6-Sep-2012 17:01
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ubergeeknz: Yeah it's pretty plain that the 2nd hop there is not ideal.  Although I'm not sure what performance you can expect from a 5.8Ghz link over 11km, you would think latency would be less than 60-180ms and not so variable.

I would hazard a guess that you are getting a lot of errors at a "physical" level that are being covered up by retransmits and a large amount of interleave.  

Raise it with the supplier and let everyone know how you get on.


I've done that on multiple occasions (read daily/hourly) and all I get from them is that networks are all built differently. My point is why is this network the only one that appears different

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  Reply # 682454 6-Sep-2012 17:03
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Cos it's either broken, or just not very performant.

If they won't accept that I suggest you take your business elsewhere...

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