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Date:      Wed, 24 Jul 1996 13:31:15 +0200 (MET DST)
From:      didier@omnix.fr.org
To:        hackers@freebsd.org
Subject:   ftp / tcp problem
Message-ID:  <Pine.BSF.3.91.960724132658.10708A-100000@zapata.omnix.fr.org>
In-Reply-To: <199607230826.KAA03478@nustel.snes.edu>

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> 
> ip:
> 	26976168 total packets received
> 	0 bad header checksums
> 	0 with size smaller than minimum
> 	0 with data size < data length
> 	0 with header length < data size
> 	0 with data length < header length
> 	0 with bad options
> 	0 with incorrect version number
> 	708623 fragments received
> 	0 fragments dropped (dup or out of space)
> 	6549 fragments dropped after timeout
> 	113138 packets reassembled ok
> 	26380379 packets for this host
> 	271 packets for unknown/unsupported protocol
> 	0 packets forwarded
> 	33 packets not forwardable
> 	0 redirects sent
> 	25941063 packets sent from this host
> 	0 packets sent with fabricated ip header
> 	0 output packets dropped due to no bufs, etc.
> 	17085 output packets discarded due to no route
> 	3219 output datagrams fragmented
> 	16014 fragments created
> 	0 datagrams that can't be fragmented
> icmp:
> 	23 calls to icmp_error
> 	0 errors not generated 'cuz old message was icmp
> 	Output histogram:
> 		echo reply: 22
> 		destination unreachable: 23
> 	0 messages with bad code fields
> 	0 messages < minimum length
> 	0 bad checksums
> 	0 messages with bad length
> 	Input histogram:
> 		echo reply: 15
> 		destination unreachable: 75
> 		echo: 22
> 		router solicitation: 21
> 		time exceeded: 175
> 	22 message responses generated
> igmp:
> 	0 messages received
> 	0 messages received with too few bytes
> 	0 messages received with bad checksum
> 	0 membership queries received
> 	0 membership queries received with invalid field(s)
> 	0 membership reports received
> 	0 membership reports received with invalid field(s)
> 	0 membership reports received for groups to which we belong
> 	0 membership reports sent
> tcp:
> 	302 packets sent
> 		25530582 data packets (15179687 bytes)
> 		1405842270 data packets (4134 bytes) retransmitted
> 		5845101 ack-only packets (9646646 delayed)
> 		22 URG only packets
> 		10341244 window probe packets
> 		39 window update packets
> 		1526 control packets
> 	3930 packets received
> 		0 acks (for 15150547 bytes)
> 		0 duplicate acks
> 		692583 acks for unsent data
> 		25702165 packets (10761642 bytes) received in-sequence
> 		0 completely duplicate packets (688350 bytes)
> 		1314 old duplicate packets
> 		703293 packets with some dup. data (0 bytes duped)
> 		0 out-of-order packets (652 bytes)
> 		44640 packets (4 bytes) of data after window
> 		40 window probes
> 		1405852060 window update packets
> 		0 packets received after close
> 		767520312 discarded for bad checksums
> 		0 discarded for bad header offset fields
> 		0 discarded because packet too short
> 	1049 connection requests
> 	2460 connection accepts
> 	3014 connections established (including accepts)
> 	3592 connections closed (including 89 drops)
> 		0 connections updated cached RTT on close
> 		350 connections updated cached RTT variance on close
> 		350 connections updated cached ssthresh on close
> 	499 embryonic connections dropped
> 	15145509 segments updated rtt (of 15146257 attempts)
> 	3938 retransmit timeouts
> 		0 connections dropped by rexmit timeout
> 	1 persist timeout
> 		14 connections dropped by persist timeout
> 	0 keepalive timeouts
> 		2319 keepalive probes sent
> 		39 connections dropped by keepalive
> 	0 correct ACK header predictions
> 	13473654 correct data packet header predictions
> udp:
> 	678177 datagrams received
> 	0 with incomplete header
> 	0 with bad data length field
> 	0 with bad checksum
> 	23 dropped due to no socket
> 	49231 broadcast/multicast datagrams dropped due to no socket
> 	6851 dropped due to full socket buffers
> 	622072 delivered
> 	405857 datagrams output
> 

Hi,

I've a problem with two FreeBSD 2.1-STABLE machines these machine
has a SMC PCI card (de0 driver). 

I only get 15kb with ftp

what can I do to solve this problem. I found the result of netstat -s quite
strange. why so many tcp packet have a bad checksum. no errors are detected
by ethernet switch (synoptics)

Thanks for your help


--
Didier Derny            | My computer is Microsoft Free...
didier@omnix.fr.org     | FreeBSD 2.1-STABLE site






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