Hi Group, Can anyone clarify for me? IP header has a fixed 20 bytes length or can be more than this? Thanks anyong Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=13700&t=13700 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]