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:
Release 1.4.0 also brings latest revisions of
contributed protocols and core SSFNet classes.
- 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.
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:
The release also brings upgrades in diagnostic output, latest revisions of
all included protocols, and new models and demonstrations.
- 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.
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 features in IP (configurable same-cost route tiebreaking,
virtual and loopback interfaces), configurable queues, better tcpdump,
new examples and more documentation.
- SSF.Util.Streams for creation of configurable distributed network
(see the tutorial);
- SSF.OS.NetFlow for flow data collection from routers;
- BGP4 revised implementation with Internal BGP, Route Reflection, and policy
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.
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.
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.
SSFNet 0.7 internal release. SSF simulations reach
100,000 concurrent TCP connections: See the PDPTA'99 paper Towards Realistic Million-Node Internet Simulations.
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
Read about SSF Internet modeling in the January/February issue of Computing in Science and Engineering magazine. (Article
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.