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Re: Need to record bandwidth used by branch office VPN tunnels
From: "Laura Chappell" <lchappell () packet-level com>
Date: Fri, 9 Aug 2013 08:28:12 -0700

Oh, yeah... one week is a killer... I've run for just an hour at a customer
we didn't hit a snag. 

Wouldn't it be best if tshark stopped saving the packets once the statistic
is obtained for the timeframe? 

Laura

-----Original Message-----
From: wireshark-users-bounces () wireshark org
[mailto:wireshark-users-bounces () wireshark org] On Behalf Of Sake Blok
Sent: Friday, August 09, 2013 8:16 AM
To: Community support list for Wireshark
Subject: Re: [Wireshark-users] Need to record bandwidth used by branch
office VPN tunnels

On 9 aug 2013, at 03:05, Laura Chappell wrote:

Consider using tshark (command-line tool) with the following parameters
perhaps.
 
tshark -q -z
io,stat,3000,ip.addr==192.168.1.0/24,ip.addr==192.168.2.0/24,ip.addr==192.16
8.3.0/24 > mystats.txt
 
No packets are saved during this process - you're only getting statistics.

Laura, this is not entirely true. As tshark uses dumpcap to capture the
traffic, dumpcap will save all the packets in a temporary file from which
tshark will read. To monitor the traffic for  a week in this manner will
most likely result in a) an out-of-memory error due to the fact that tshark
keeps information about each conversation and b) a disk filling up with
packet data.

Cheers,
Sake


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