Ron, When using a Layer 3 OSA device with the Option "fake_ll=1",only received packets will have the link layer header built. That is why you only the inbound packets in the dump.
>>QETH_LAYER2_SUPPORT='0' >>QETH_OPTIONS='fake_ll=1 buffer_count=64' Duane Beyer IBM Poughkeepsie, TICL (Test and Integration Center for Linux) On 11/3/09, Ron Wells <[email protected]> wrote: > May have deleted any replies...thought I'd try again.. > > ----- Forwarded by Ron Wells/AGFS/AGFin on 11/03/2009 03:55 PM ----- > > From: > Ron Wells/AGFS/AGFin > To: > Linux on 390 Port <[email protected]> > Date: > 11/03/2009 01:27 PM > Subject: > Re:TCPDUMP > > > Not recv'ing / seeing packets being sent from Linux box..only see them > coming inbound?? > > Where can I start looking > Going through VSWITCH where OSA-Gig card is set > z/VM5.4 > SLES 10 SP2 > Linux agfzxt02 2.6.16.60-0.42.4-default #1 SMP Fri Aug 14 14:33:26 UTC > 2009 s390x s390x s390x GNU/Linux > > > tcpdump command: > tcpdump -p -i eth0 -s 0 -vv -w /root/appwork01.lcap "src port not 22 or > dst port not 22" > > Ethereal screen shot (Linux image IP is 10.239.53.217): > > Hardware conf: > STARTMODE='auto' > MODULE='qeth' > MODULE_OPTIONS='' > MODULE_UNLOAD='yes' > SCRIPTUP='hwup-ccw' > SCRIPTUP_ccw='hwup-ccw' > SCRIPTUP_ccwgroup='hwup-qeth' > SCRIPTDOWN='hwdown-ccw' > CCW_CHAN_IDS='0.0.f804 0.0.f805 0.0.f806' > CCW_CHAN_NUM='3' > QETH_LAYER2_SUPPORT='0' > CCW_CHAN_MODE='' > LCS_LANCMD_TIMEOUT='' > QETH_IPA_TAKEOVER='0' > QETH_OPTIONS='fake_ll=1 buffer_count=64' > > Interface conf: > BOOTPROTO='static' > UNIQUE='' > STARTMODE='auto' > IPADDR='10.239.53.217' > NETMASK='255.255.255.0' > NETWORK='10.239.53.0' > BROADCAST='10.239.53.255' > _nm_name='qeth-bus-ccw-0.0.f804' > ETHTOOL_OPTIONS='' > MTU='' > NAME='OSA External' > REMOTE_IPADDR='' > USERCONTROL='no' > PREFIXLEN='' > ARP='no' > > > > ---------------------------------------------------------------------- > Email Disclaimer > This E-mail contains confidential information belonging to the sender, > which may be legally privileged information. This information is intended > only for the use of the individual or entity addressed above. If you are > not the intended recipient, or an employee or agent responsible for > delivering it to the intended recipient, you are hereby notified that any > disclosure, copying, distribution, or the taking of any action in reliance > on the contents of the E-mail or attached files is strictly prohibited. > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
