Wireshark-users: Re: [Wireshark-users] Spanning tree can slow the network?
From: Patrick Marc Preuss <[email protected]>
Date: Sun, 15 Jul 2012 13:37:57 +0200
Hi Andrea

have you a running installation of this application ? 
What are the differences in the installation, network environment, running protocols (IPv4, IPv6), DNS Resulution and so on? 

Are Parts installed on the fileserver ? You have some questions for ERP App to the file server. 

Can you match packets to events on the Client? 

Packtets to login screen, Packets to Part of the UI, Packets to Full UI and so on. 

When is the application slow ? Startup, During runtime, Special Querys?  

You don't have much multicast in the network. 


Cheers 

Patrick

Am 15.07.2012 um 11:24 schrieb Andrea:

> Il 15/07/2012 09:14, James Howard Young ha scritto:
>> I think that the delay you see between packets 716 and 718 is simply
>> the host processing time it took host 192.168.1.12 (the machine that
>> the sniffer was running on) to generate the HTTP POST packet sent
>> in packet 718.
>> 
>> Hope this helps,
> 
> Thanks  all guys for good answers,  so I see that STP is not the problem in my case and these delay second due to host processing time (client).
> 
> But I don't know why this application take too many time to start (about 25 seconds), please take a look on this second trace (another cusotmer LAN with the same app starts):
> http://www.cloudshark.org/captures/e95c1068086f
> 
> from packets 680 to 701 has been nearly 2 seconds meanwhile there are many multicast packets, can this a contribute to cause this delay?

This is not many multicast this is some multicast. This are IPv6 host telling the world some information. ;-) This is no problem :-) 


> 
> And in the same case (and same trace file but beacuse is too big I've split the file), I've seen many TDS protocol  (SQL transaction) with malformed packets:
> http://www.cloudshark.org/captures/2c90ee59e7fa
> 
> take a look at packets 80 , 156, 213, 245, 251, 275, 297, 307 , etc..
> 
> what do you think of this?
> 
> Andrew
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