PCAP import - a crash and a flash
Debugging a Ostinato crash while importing a large PCAP file, I find the bug and spot an opportunity to reduce import time to a flash
Posts by Category
ostinato
Making Ostinato’s variable fields more flexible
How adding a skip parameter to Ostinato’s variable fields makes it more flexible
Ostinato Timed Transmit
A video preview of the upcoming timed transmit feature and what went into implementing it
A Qt app with auto-resizing docks
How to build a Qt app with only docks in the main window and no central widget such that the docks utilize all the available space - an Ostinato case study
Ostinato Show Transmit Duration
A video preview of the upcoming show transmit duration feature
Generate RARP (Reverse ARP) packets
How to use packet field overrides to send Reverse ARP (RARP) packets using Ostinato
Ostinato goes Turbo at 100Gbps
Ostinato Turbo high-speed network traffic tester has been upgraded to generate upto 100Gbps line rate and possibly even higher
Ostinato show reserved ports broken in 1.3.0
Details of what is broken, the fix and a workaround
Latency and Jitter test
Network latency and jitter measurement using Ostinato traffic generator
Ostinato Port Stats UI improvements
A visual talk-through of UI improvements suggested by an Ostinato user
Ostinato RX stream stats always zero
How to work around libpcap issue leading to Ostinato Rx stream stats being always zero
Ostinato in a container
Ostinato now available as docker containers for general use and with container labbing platforms like containerlab
Distinguish field names for combo protocols
User requested Ostinato UX improvement to distinguish field names for combo protocols like VlanStack, IP 4over4 etc.
Ostinato 1.2.0 released
The new version of Ostinato - v1.2.0 has been released with many new features and bunch of bugfixes
Using Ostinato with mininet
How to generate traffic flows to verify SDN controller and openflow switches with mininet
Ostinato Themes
Liven up the Ostinato GUI with themes - both dark and light themes are available
Import and export PCAP files with nanosecond timestamps
Support of nanosecond precision timestamp PCAP files in Ostinato
Edit PCAP using Ostinato
How to use Ostinato find & replace to bulk edit and rewrite a PCAP packet capture file
Generate IMIX traffic with Ostinato
How to generate Internet Mix (IMIX) traffic using Ostinato traffic generator
Ostinato at FOSDEM 2021
Writing an Ostinato protocol builder
How to generate Geneve encapsulated packets
Use Ostinato userscript to craft Geneve packets
Ostinato at SharkFest 2020
An introduction to Ostinato including several live demos presented at Sharkfest 2020
How to open PCAP files in Ostinato on EVE-NG, GNS3 and CML
How to transfer files between the host and the Ostinato VM on EVE-NG, GNS3 and CML
Test SDWAN using application traffic
How to generate application traffic to verify SDWAN configuration and application aware routing policies
Staircase style traffic with Ostinato
How to generate increasing traffic rates with Ostinato
A deeper understanding of the OSI 7-layer model
Cisco Networking Academy students at LTC, Australia talk about their Ostinato experience
Ostinato improves networking students’ understanding and skill level: Graham Cassells
An interview with Graham Cassells, Cisco Network Academy teacher
A bigger nudge to check the logs
Feature preview of error and warning notifications in Ostinato packet crafter and traffic generator version 1.1
Test NAT using Ostinato
How to test 2 million NAT sessions with a single Ostinato stream
Qt model view and cut copy paste
How to implement cut copy paste with Qt
Cut Copy Paste with Ostinato - video
Feature preview of cut copy paste with Ostinato packet crafter and traffic generator
Ostinato Device Emulation - Video tutorial
How to use the Ostinato device emulation feature with ARP and Ping support for Layer 3 Routing and Layer 2 Bridging traffic tests
Crafting VxLAN packets using Ostinato
A Ostinato User script for VxLAN
Ostinato throughput on a 40G NIC
Ostinato performance results for a Intel XL710 40G interface
How to change the default boot option in Ostinato virtual appliance
Change the default boot menu option and other boot menu attributes for the Ostinato virtual appliance
Ostinato API - Wait for stream transmission to finish
How to use the Ostinato API to detect when stream transmit has finished
How to run Ostinato in a ssh-only environment
Enable Ostinato controller-agent communication in restrictive environments via ssh-tunneling
How to generate MPLS packets using Ostinato User Script
Use the Ostinato UserScript protocol to generate MPLS or any other protocol not supported by Ostinato
How to generate MPLS packets using Ostinato HexDump
Use the Ostinato HexDump protocol to generate MPLS or any other protocol not supported by Ostinato
How to change Ostinato’s look and style
Change Ostinato’s look for fun and utility
Ostinato for Linux Maximum Transmit Rate
Ostinato Linux performance numbers
Ostinato for MacOS Maximum Transmit Rate
Ostinato Mac OS performance numbers
Ostinato Live ISO Maximum Transmit Rate
Ostinato Live ISO performance numbers
Ostinato first run UX improvements
UX improvements to Ostinato and why
No qDebug output with Qt 4.8.7 and MinGW
How to restore qDebug output with Qt 4.8.7 and MinGW
wireshark
Analyzing VxLAN packets using Wireshark
A Wireshark Lua dissector for VxLAN