On Thu, Apr 25, 2002 at 06:18:04PM -0400, Raghu Uppalli wrote:
> Is there a way, maybe some tools, to know the data rate
> from a captured tcpdump file.
"Data rate" in what sense?
The speed of the link layer is not stored in a tcpdump file - e.g.,
there is no indication of whether a PPP link is a 56K dialup line or PPP
running over a T1 or faster link.
However, a program could compute the average number of bytes/second in
the capture, under the assumption that
1) all the packets on the link were captured - which isn't
necessarily the case on, say, a switched Ethernet;
2) all the data in the packet was captured - which means that
tcpdump was run with a "-s" argument large enough to capture
all the data.
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