[colug-432] Packet Loss

[Thomas W. cranston]

On 10/10/2011 12:18 PM, Rob Funk wrote:
> On Monday, October 10, 2011 10:26:14 am Thomas W. cranston wrote:
>    
>> Wondering why I am getting packet loss between my laptop and Linksys
>> wireless router.
>>      
> A little packet loss occasionally is a good thing. Google for "bufferbloat".
>
> Beyond that, you really need a *long* run of pings to really get valid data.
> 4 just tells you there's something at the other end. 16 is a start, but 160
> is better.
>
> But it's possible that there's other traffic using the bandwidth (I learned
> this way that PulseAudio has a nasty bug that can cause multicast floods),
> or possibly a bug in either the access point or your laptop.
>
> tcpdump might give you a clue, if the problem is other traffic.
>
> I ended up buying a USB spectrum analyzer to find out what was going on with
> my network. (It was less than $100 at Micro Center.)  That mainly showed me
> when things were bad; tcpdump was what pointed to multicast pulseaudio as
> the culprit.
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> http://lists.colug.net/mailman/listinfo/colug-432ran ping 500 times.
>    
I set ping to run 500 times. I got several results that took a lot of time:

64 bytes from 192.168.1.1: icmp_seq=64 ttl=150 time=126 ms

4 bytes from 192.168.1.1: icmp_seq=184 ttl=150 time=126 ms

Tom