Re: [Wireshark-users] Checksum Display Filters

2007-02-11 Thread Stephen Fisher
On Sun, Feb 11, 2007 at 08:20:00PM -, Keith French wrote: > Is there any difference from a logical point of view when using a > display filter to find packets with bad IP checksums between these two > expressions:- > > ip.checksum_bad == 1 > or > ip.checksum_good == 0 > > As a checksum can

Re: [Wireshark-users] Checksum Display Filters

2007-02-11 Thread Jaap Keuter
Hi, Not for UDP, there the checksum can be omitted. Thanx, Jaap On Sun, 11 Feb 2007, Keith French wrote: > In the IP, TCP or UDP headers is the "Checksum" field, which has two parts to > it. For the IP checksum this is:- > > Header checksum: 0xbbd5 [correct] > [Good: True] > [B

[Wireshark-users] Checksum Display Filters

2007-02-11 Thread Keith French
In the IP, TCP or UDP headers is the "Checksum" field, which has two parts to it. For the IP checksum this is:- Header checksum: 0xbbd5 [correct] [Good: True] [Bad : False] with similar for the TCP and UDP checksums. Is there any difference from a logical point of view when usin

Re: [Wireshark-users] [Norton AntiSpam] Re: Help. I do not know much about anything.... Iamtrying to see if a wireless connection between 2

2007-02-11 Thread Chet Seligman
I work for an Avaya and Cisco business partner certifying networks for IP-Tel. These companies recommend G.711 for LAN and G.729 for WAN. The testing that I do shows that in a “perfect network” i.e. virtually no losses, G.711 renders a MOS (Mean Opinion Score) of 4.4 and G.729 renders 4.1. I don