Ethereal-users: RE: [Ethereal-users] Using Etheral to pin-point a network throughputproblem
As has been said by Scott, Ethereal can't generate
traffic.
I would :
Use Ethereal to cpature and measure 1 cameras traffic at
the desired frame rate. Depending on whether the codecs are constant quality or
constant bandwidth you may want to make sure you have varied images to
view.
You can then use this info and use a tool such as iperf to
generate appropriate quantities of UDP or TCP traffic. The iperf receiver can
give you a general idea of how the network copes. You might also use ethereal to
measure a single camera's stream while you load up the network with
iperf.
Of course you should also make use of the stats available
on the network equipment itself looking for various layer 1, 2 or 3
anomolies.
Hi All
Getting sent out tomorrow to
do some network analysis which I've only done a very little of.
Some rental place gave me an ancient
version of sniffer pro 3.0.5 on a dinosaur laptop.
The problem is that the client has a number
of CCTV cameras mainly on 100 mb switches but there may be some 10s or 10
links.
When they up the cameras to 25 frames per
second they get dropouts - in fact get dropouts at anything above 6.
They've got about 25 cameras and they said they've done 18 camera installs
before on 100mbs networks - no worries.
So a few Qs: Pointing me to the right bits
of the manual would be peachy
(oh and I have to operate in a strictly
windows environment)
- Does ethereal handle switched networks
and if so do I have to set anything special up.
- Can ethereal generate traffic and do
throughput testing if so - how? and if not do people know of any other free
tools I can use. There used to be this thing called Raccoon speed tester
that did timed transfers but I can't find it anymore on the web. I'm
guessing if it gets down to some switch not handling the type of packets I'll
need something that can throw different packet types.
- Reporting - the client wants the problem
pin-pointed and proved on paper.
- General tips and gotchas
- Should I send the sniffer pro back - is
it going to give me anything important in this scenario that ethereal
won't.
Sorry for all the Qs but I've been chucked
in the deep end on this one :(
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