June 11, 2002: SSFNet Faq-O-Matic has been set up by BJ Premore:

A self-service FAQ for SSFNet users, to find answers to typical SSFNet questions, and to post the answers.

February 15, 2002: SSFNet 1.4 release is available:

• New package SSF.OS.OSPFv2 provides a dynamic, multi-area implementation of the OSPFv2 routing protocol.
• SSF.Net package now provides a mechanism for prefix reachability information exchange to support studies of interactions among routing protocols.
• New functionalities in the BGP4 model.
• New contributed network models: package SSF.App.DDoS modeling a DDoS attack and traceback scenario.

Release 1.4.0 also brings latest revisions of contributed protocols and core SSFNet classes.

Anja Feldmann's networking research group at Saarbruecken have joined the SSFNet development team.

June 15, 2001: New SSFNet 1.3 release is available. It includes:

• New package SSF.Util.Plot for animated plotting of multiple time series such as packet or flow traces;
• ICMP and the traceroute and ping utilities;
• SSF.OS.Resource class for modeling time delays with shared resources, such as router processing delays.
• Enhanced client/server traffic workload generation with configurable ON-OFF behavior, and recovery from simulated network failures.

The release also brings upgrades in diagnostic output, latest revisions of all included protocols, and new models and demonstrations.

April 2, 2001: Renesys demonstrates the Raceway interactive graphics tools for animation and analysis of large network topologies and multi-point network montoring traces.

November 9, 2000: New SSFNet 1.2 release is available, includes new packages:

• SSF.Util.Streams for creation of configurable distributed network measurement infrastructures (see the tutorial);
• SSF.OS.NetFlow for flow data collection from routers;
• BGP4 revised implementation with Internal BGP, Route Reflection, and policy specification;

new features in IP (configurable same-cost route tiebreaking, virtual and loopback interfaces), configurable queues, better tcpdump, new examples and more documentation.

June 30, 2000: SSFNet 1.1 release is available: includes new package SSF.OS.WWW with measurement-based web workload generators and models of HTTP1.0 and 1.1 clients and servers, significant additions to BGP4, and additional examples and documentation.

June 2000:
We listened to SSFNet users... the tutorials and manuals were redesigned and updated. The whole site had a makeover, and the extensive TCP validation subtree was installed here.

May 2000:
Several projects at WINLAB (Wireless Information Network Lab, Rutgers) develop SSF models of EDGE/GPRS and unlicensed wireless "ecosystems". Internal release of a major WCDMA model including mobility, multipath radio propagation and interference, WCDMA tranceiver signal processing at the baseband level, and link-level protocols. Earlier release included NTT DoCoMo models of 3G WCDMA tranceiver and protocols.

Apr. 16, 2000:
Hongbo Liu presents results on the SSF.OS.TCP Simulation Analysis by tcpanaly.

December 15, 1999:
SSFNet 1.0 public release: includes new package SSF.Util.Random with a suite of strong random number generators and statistics, global management of traffic patterns, binary tcpdump packet filtering utility, protocol validation test suites, and more.

October 7, 1999:
SSFNet 0.8 internal release is available: includes revised TCP Tahoe and Reno, major revisions of OSPF and BGP4, updated documentation and protocol validation test suites.

September 15, 1999:
New tutorial on SSF.OS protocol design

August 16, 1999:
An extensive SSF TCP documentation and validation web site goes on-line. Each test is accompanied by detailed analyses of sequence plots and TCP state variables plots. Note added: This website is now available here.

July 13, 1999:
DaSSF web site goes on-line.

June 8, 1999:
This site goes on-line.

May 1999:
SSFNet 0.7 internal release. SSF simulations reach 100,000 concurrent TCP connections: See the PDPTA'99 paper Towards Realistic Million-Node Internet Simulations.

April 1999:
A group at WINLAB (Wireless Information Network Lab) has developed C++ SSF models of mobility, multipath radio propagation and interference, and in collaboration with NTT DoCoMo has added models of W-CDMA radio signal processing at the baseband level, and link-level protocols.

January 1999:
Read about SSF Internet modeling in the January/February issue of Computing in Science and Engineering magazine. (Article text)

November-December 1998:
Parallel SSF simulations of the Internet shown to deliver scalable performance for modeling networks of 100,000 UDP hosts and routers, and for multi-million-node networks of simple network elements, at the speeds of millions of events per second on commodity multiprocessor machines.