Short Frames
"Rob Moore" <[email protected]>
| Newsgroups | gmane.network.ethereal.user |
|---|---|
| Organization | VisionOSS |
| Message-ID | <006a01c68eca$89e2fbd0$1c65fe90@PC310093174127> |
I am running Ethereal on Gentoo linuix and capturing Ethernet packets sent from my Cisco CallManager 4.2 I notice a number of frames that are short-frames..indicating 1514 bytes on the wire, and 1500 bytes captured. What might cause only 1500 bytes to be captured? My eth0 interfaces have MTU 1500. I am assuming I have 12 (I think) bytes of header..but the header appears to be captured. When I look at the captured information, It appears that I am missing payload! Cisco CallManager runs under a Windows OS (2000 I think? Will need to check)..perhaps they have the MTU hardcoded in the registry. Any thoughts would be appreciated. Rob Moore Systems Engineer 200 Brook Drive VisionOSS Limited Green Park Tel +44 (0) 118 949 7000 Reading Fax +44 (0) 118 949 7145 RG2 6UB Mob +44 (0) 7870 395901 United Kingdom E-Mail: <mailto:[email protected]> [email protected] Web: <http://www.visionoss.com/> www.visionoss.com VisionOSS VOIP Management Excellence _______________________________________________ Ethereal-users mailing list [email protected] http://www.ethereal.com/mailman/listinfo/ethereal-users