Packets Getting Lost Post: 43857

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Top Forums Programming Packets Getting Lost Post 43857 by Perderabo on Monday 24th of November 2003 11:36:02 AM

11-24-2003

Administrator Emeritus

The way you display network statistics varies from OS to OS. On HP-UX, I use "lanadmin" in interactive mode and use the "display" command. On recent versions of SunOS, I like the kstat command. For instance something like "kstat hme::hme0". I'd be a little surprised if either of these works on AIX. But I don't work on AIX so who knows.

It's been a while since I have personally used a sniffer, we have network people who do that. And anyway, each sniffer has its own instructions. But I can at least make a few general remarks. These days, a sniffer is a very high powered laptop...fast cpu, lot of memory, and all possible network connectors. No need for fast or large disks. You connect to the network and it records the traffic. You typically program it to look at traffic between specific boxes and/or specific protocols. Then it can display every packet sent by either box. And it can format the packets and highlight packets that look like an error occurred. Go to google and look for "network sniffer". A more formal name is "protocol analyser", but no one calls them that anymore.

Perderabo

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LEARN ABOUT DEBIAN

vusb-analyzer

VUSB-ANALYZER(1)					       Virtual USB Analyzer						  VUSB-ANALYZER(1)

NAME

       vusb-analyzer - tool for visualizing logs of USB packets

SYNOPSIS

       vusb-analyzer [OPTIONS] LOGFILE [LOGFILE...]

DESCRIPTION

       The  Virtual  USB Analyzer is tool for visualizing logs of USB packets, from hardware or software USB sniffer tools. It's the world's first
       tool to provide a graphical visualization along with raw hex dumps and high-level protocol analysis.

       The Virtual USB Analyzer is not itself a USB sniffer tool. It is just a user interface for visualizing logs. It currently supports two  log
       formats,  but  it's designed to be easily extensible. With a couple hundred lines of Python code, you can add support for your favorite log
       format.

       The Virtual USB Analyzer was developed at VMware as an efficient way to debug their own USB virtualization stack. They wanted a	tool  that
       made  it easy to see problems at a glance, and they wanted a way to solve both correctness and performance bugs. As a result, they ended up
       with what they think is a fairly unique tool. They're excited to have the opportunity to release this tool as open source software.

       Supported Log Formats

       * Logged USB traffic from debug builds of VMware Fusion, Workstation, or Player. See the tutorial for information on capturing such a log.

       * XML logs from the Ellisys USB Explorer 200, a hardware USB 2.0 analyzer.

       Features

       * Unique graphical timeline view.

       * Side-by-side diff mode: visually compare two log files.

       * Pluggable log format modules: VMware, Ellisys.

       * Pluggable protocol decoders: USB Chapter 9, Bluetooth, Storage, Cypress FX2.

       * Packet metrics and filtering tools.

       * Whole-bus analysis: analyze multiple devices concurrently.

       * Written in Python, with a GTK+ user interface.

       * Automatic "tail -f" mode: follow log files as they grow.

       * Loads large log files in the background. You can start browsing before the whole file is loaded into memory.

       * Automatic decompression of gzipped log files.

OPTIONS

       -t  Tail mode, start from the end of a growing log file.

HOMEPAGE

       More information about vusb-analyzer, including a tutorial and sample logs, can be found at <http://vusb-analyzer.sourceforge.net/>.

AUTHOR

       vusb-analyzer Micah Dowty <micah@vmware.com>.

       This manual page was written by Daniel Baumann <daniel@debian.org>, for the Debian project (but may be used by others).

1.0								    2009-05-17							  VUSB-ANALYZER(1)