Did you try dumpcap? It's included with Wireshark (the latest version
of Ethereal) and typically is much better at capturing because it
doesn't do any processing - it just dumps everything to a file. I've
used it in many situations where Wireshark/tshark would drop packets
(1Gbps+) because of processing overhead but dumpcap worked beautifully
with no drops. Once you have the captured information, you can then use
Wireshark to slice/dice/display it.
Keep in mind though that if you use a PC there are many performance
limits imposed. For example - a 1 Gbps NIC is pushing the limits of the
traditional PC architecture unless you're using hi-end PCI/PCI-X/PCIe
with a corresponding high performance card (like Intel's). Don't forget
you need a well tuned driver and fast CPU/Memory. There have also been
some interesting papers published on tuning drivers and capture methods
for high speed networks, check out:
http://www.winpcap.org/docs/
--Jim
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Hello, sirs,
What kind of tools can capture ethernet packets (such as UDP) fast
enough on the Linux platform? Ethereal cannot fulfill my requirements.
I'm using packETH 1.4 to send packets.
I found that Ethereal cannot monitor all of the packets if I send 100000
(or more) packets (100 bytes per packet) consecutively with a delay
between packets of 8 us (= 0.008 ms = 0.000008 s), i.e. at least some
percent of the packets cannot be captured in Ethereal.
96172/100000 = 96.172%, >3% lost
957952/100000 = 95.7952%, >4% lost
After look around in Google, I found the Wireshark is a kind of upgraded
version of ethereal, right? Is it possible to capture all packets as I
want?
Please help me out, thanks in advance.
Winter Song.