Re: [tcpdump-workers] Failing to capture packets....

2007-01-23 Thread Stephen Donnelly
Most commercial NICs only deliver well formed Ethernet packets (valid size, correct FCS) to the operating system, and also generally strip out Ethernet control frames such as 'pause' indications. Because of this Libpcap would not have any data to deliver to the capturing application. You may have

Re: [tcpdump-workers] Failing to capture packets....

2007-01-23 Thread Paul Armor
Hi, after Guy's last email where he states: "Tcpdump supports capturing *all* network traffic;" I feel compelled to again ask if anyone can offer any suggestions on how I can achieve my goal of capturing the data I'm seeing on my ethernet segment... To what I wrote earlier I'd also add that th

[tcpdump-workers] Failing to capture packets....

2007-01-19 Thread Paul Armor
Hi, I've got a problem that's strange on various levels and using tcpdump isn't as helpful as I'd have hoped. Can anyone offer suggestions on how to capture/interpret my bad data on the wire? I'm trying to capture from any of a few other machines with Broadcomm chips, and am wondering if the