[openib-general] tcpdump command issue on IB network

Tue Apr 11 10:33:42 PDT 2006

Could you plese check in binaries to svn, or let me get them some other
way?  Thanks....

Scott 

> -----Original Message-----
> From: openib-general-bounces at openib.org 
> [mailto:openib-general-bounces at openib.org] On Behalf Of Bob Woodruff
> Sent: Tuesday, April 11, 2006 10:30 AM
> To: Roland Dreier (rdreier)
> Cc: Jerome Taylor; openib-general at openib.org
> Subject: RE: [openib-general] tcpdump command issue on IB network
> 
> Roland wrote,
> 
> >tcpdump will work fine.  It doesn't look at the hardware address in
> >the structure at all.
> 
> > - R.
> 
> I removed the check and indeed tcpdump does now appear to work in
> a modified 2.6.9-34EL kernel. I can add this change to my  
> backport-to-2.6.9 patches for 2.6.9-34EL for people that use them. 
> 
> [root at iclust-1 woody]# tcpdump -i ib0
> tcpdump: WARNING: arptype 32 not supported by libpcap - 
> falling back to
> cooked socket
> tcpdump: verbose output suppressed, use -v or -vv for full 
> protocol decode
> listening on ib0, link-type LINUX_SLL (Linux cooked), capture 
> size 96 bytes
> 09:48:39.833316 IP iclust-1-ib0 > iclust-16-ib0: icmp 64: 
> echo request seq 0
> 09:48:39.833406 IP iclust-16-ib0 > iclust-1-ib0: icmp 64: 
> echo reply seq 0
> 09:48:40.833356 IP iclust-1-ib0 > iclust-16-ib0: icmp 64: 
> echo request seq 1
> 09:48:40.833419 IP iclust-16-ib0 > iclust-1-ib0: icmp 64: 
> echo reply seq 1
> 09:48:44.832002 arp who-has iclust-1-ib0 tell iclust-16-ib0 
> hardware #32
> 09:48:44.832023 arp reply iclust-1-ib0 is-at
> 00:00:04:04:fe:80:00:00:00:00:00:00:00:02:c9:01:0a:d2:58:f1 
> hardware #32
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