Re: TCP Oddities followup

1999-12-23 Thread Matthew Dillon

:Scott Michel wrote:
:> - tcpdump-ing the pn0 interface shows that the host thinks that it's
:>   sending data. tcpdump-ing elsewhere in the network shows that pn0
:>   isn't actually transmitting anything into the wire.
:
:The host appears to be doing retransmissions but nothing goes out
:on the wire.
:
:> - This really is a TCP or interface bug because NFS connections don't
:>   freeze using UDP.
:
:It's not just NFS. I can duplicate this behavior with scp and
:cvsup (things that do bulk data transfer.)
:
:
:-scooter

Try doing a ping on the host with the pn0 interface to another
machine.  See if the packets it thinks it is sending get
transmitted after a bunch of ping packets have accumulated.
somethign like 'ping -i 0.03 remotehost' so it writes a lot of
packets out.

-Matt
Matthew Dillon 
<[EMAIL PROTECTED]>


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Re: TCP Oddities followup

1999-12-23 Thread B. Scott Michel

Scott Michel wrote:
> - tcpdump-ing the pn0 interface shows that the host thinks that it's
>   sending data. tcpdump-ing elsewhere in the network shows that pn0
>   isn't actually transmitting anything into the wire.

The host appears to be doing retransmissions but nothing goes out
on the wire.

> - This really is a TCP or interface bug because NFS connections don't
>   freeze using UDP.

It's not just NFS. I can duplicate this behavior with scp and
cvsup (things that do bulk data transfer.)


-scooter


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