Re: IP header question, Fixed 20 bytes or can be more? [7:13754]

!Hola! Same for the TCP header. there is an optional options field of 4 bytes. my s/4 bytes/4 bits/ ? And the size for options fields is 40 (2^15 * 4 - 20) bytes (the data offset field is sized to 4 bits) quick glance through RFC 761 tells me this field never exceeds that 4 byte length,

IP header question, Fixed 20 bytes or can be more? [7:13700]

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=7i=13700t=13700 -- FAQ, list archives, and subscription info:

RE: IP header question, Fixed 20 bytes or can be more? [7:13700]

IP and TCP header has 20bytes Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13703t=13700 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to

Re: IP header question, Fixed 20 bytes or can be more? [7:13706]

Hi Rootstock, You're from China!! Thanks. The reason I ask for because I saw the link below which confusing me http://rute.sourceforge.net/node28.html Table 25.1 20-IHL*4-1 Options + padding to round up to four bytes Any idea? anyong xie rootstock wrote in message [EMAIL

RE: IP header question, Fixed 20 bytes or can be more? [7:13710]

material covering the options and their uses. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of xie rootstock Sent: Tuesday, July 24, 2001 8:46 PM To: [EMAIL PROTECTED] Subject: RE: IP header question, Fixed 20 bytes or can be more? [7:13700] IP

Re: IP header question, Fixed 20 bytes or can be more? [7:13712]

ootstock Sent: Tuesday, July 24, 2001 8:46 PM To: [EMAIL PROTECTED] Subject: RE: IP header question, Fixed 20 bytes or can be more? [7:13700] IP and TCP header has 20bytes Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=1371

Re: IP header question, Fixed 20 bytes or can be more? [7:13714]

!Hola! Same for the TCP header. there is an optional options field of 4 bytes. my s/4 bytes/4 bits/ ? And the size for options fields is 40 (2^15 * 4 - 20) bytes (the data offset field is sized to 4 bits) quick glance through RFC 761 tells me this field never exceeds that 4 byte length, but

Re: IP header question, Fixed 20 bytes or can be more? [7:13715]

If IP options are used, then the IP header is longer than 20 bytes. The options add a variable-length field to the IP header. They aren't used much. Record route is one such option. Each router puts in the packet its IP address. This can be useful for troubleshooting (especially when trace

RE: IP header question, Fixed 20 bytes or can be more? [7:13717]

: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of xie rootstock Sent: Tuesday, July 24, 2001 8:46 PM To: [EMAIL PROTECTED] Subject: RE: IP header question, Fixed 20 bytes or can be more? [7:13700] IP and TCP header has 20bytes Priscilla Oppenheimer http

Re: IP header question, Fixed 20 bytes or can be m [7:13706]

yes#65292; I come from china#65292; you too? an ip header is 20 bytes long, or larger if options are used. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13721t=13706 -- FAQ, list archives, and subscription info:

Re: ip header question

Atif... it seems nobody answered your question. It is a topic of good discussion. Lets talk about it. Nate ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report

ip header question

I was thinking that wouldnt it be better if the ip header had the destination ip address field before the source ip header field and the TCP header had the destination port field before the source port field. I am not sure what kinda performance effect willl it have but since at the Data link