On Thu, May 18, 2000 at 08:43:52AM -0500, Ron Flory wrote:
> is this the expected behavior?
Yes.
> It is quite different from tcpdump,
So is the summary-line format:
% tcpdump -r ~/captures/oncrpc/nfs-v2.pcap
02:14:56.401500 155.56.249.123.928954202 > 155.56.2.6.nfs: 40 null
02:14:56.401500 155.56.2.6.nfs > 155.56.249.123.928954202: reply ok 24 null
02:14:56.451500 155.56.249.123.5104450 > 155.56.2.6.nfs: 140 getattr fh 0,33/1
02:14:56.451500 155.56.2.6.nfs > 155.56.249.123.5104450: reply ok 96 getattr DIR 40777 ids 0/0 sz 5120
...
% tethereal -r ~/captures/oncrpc/nfs-v2.pcap
1 0.000000 155.56.249.123 -> 155.56.2.6 NFS V2 NULL Call XID 0x375eb75a
2 0.000000 155.56.2.6 -> 155.56.249.123 NFS V2 NULL Reply XID 0x375eb75a
3 0.050000 155.56.249.123 -> 155.56.2.6 NFS V2 GETATTR Call XID 0x4de342
4 0.050000 155.56.2.6 -> 155.56.249.123 NFS V2 GETATTR Reply XID 0x4de342
...
which is also intentional (I find the latter much easier to read than
the former). Imitating tcpdump's display format was *not* a goal of
tethereal.
> and is documented in the manpage as being a available.
The man page is incorrect; it fails to note that the time stamp isn't
displayed, by default, for live captures. (When I've done live captures
with snoop and not sent the output to a file, my main goal was to get a
general idea of what was happening on the network, to see what I should
look at in more detail to see why things were slow; the time stamp
wasn't useful in this case.)
> If imitating Sun's snoop is important, I'd add another state to the
> 'ts_type' enum (i.e., NO_TIMESTAMP) which could be the default method
> for Suns.
"For Suns"?
No, the default behavior should *not* depend on the platform on which
you're running; it's not a case of "am I running on Solaris or not?"
(one doesn't need to have a Sun to run Solaris; heck, I'm not sure one
needs Solaris to run snoop, as I think it's part of the ONCRPC+ source
package that Sun licenses to vendors who want the RPC and NFS code, and
I think Irix has it as well), it's a case of "what output format do I
want?", which might be, for some, "don't show the time stamp on live
captures" even on a platform that doesn't have snoop, and might be, for
some, "show the time stamp on live captures" even on a platform that
does have snoop.
Adding a "-t n" option would be acceptable.
