|
|
|
IMUNES - An Integrated Multiprotocol Network Emulator / Simulator |
|
|
Project overview
As invaluable tools in networked and distributed systems research,
network emulators offer a viable alternative to live experimental /
testbed networks. We are developing a realistic network topology
emulation / simulation framework based
on the FreeBSD operating system kernel partitioned into multiple lightweight
virtual nodes, which can be interconnected via kernel-level links to form
arbitrarily complex network topologies. The concept of using virtual nodes
inside a kernel for fast network emulation is not entirely new, yet
previously published work generally advocated the implementation of
kernel-level virtual nodes with capabilities limited to only certain
simple functions, such as passing of network frames from one queue to
another based on a static precomputed path. We are basing our work on
a thesis that virtual nodes, which could offer the identical rich set
of capabilities as the standard kernel does, can be implemented very
efficiently by reusing the existing OS kernel code. Our model therefore
not only provides each node with an independent replica of the entire
standard network stack, thus enabling highly realistic and detailed
emulation of network routers; it also enables each virtual node to run
a private copy of any unmodified user-level application, including
routing protocol daemons, traffic generators, analyzers, or
application servers. Furthermore, in later development phases we
expect to enable each virtual node to support multiple network
protocols concurrently, such as both IPv4 and IPv6, which would
bring us a step closer to allowing for emulation of true multiprotocol
networked environments.
During the initial development phase, supported by the Croatian Ministry
of Science and Technology research grant IP-2003-143, we developed a
network emulator prototype with basic support for virtual Ethernet and
point-to-point links, dynamic RIP and OSPF routing, together with an
integrated GUI environment for specification and management of
simulation scenarios.
Downloads
A preliminary downloads section is
available here.
Mailing list
We would appreciate if you could route
or CC: any
technical questions regarding IMUNES to our mailing list.
Subscriptions
Archives
Publications
Operating System
Support for Integrated Network Emulation in IMUNES, M. Zec, M. Mikuc;
to appear in Proceedings of the 1st Workshop on Operating System and
Architectural Support for the on demand IT InfraStructure / ASPLOS-XI,
Boston, October 2004.
Implementing a Clonable Network Stack in the FreeBSD Kernel, M. Zec; in Proceedings of the 2003. USENIX Annual Technical Conference, San Antonio, Texas, June 2003.
Collaboration
XORP -
The eXtensible Open Router Platform at ICSI
Atoms - BGP extensions project at CAIDA / UCSD
Related projects
Netbed / Emulab - THE distributed network testbed (University of Utah)
EMPOWER - Another distributed network emulator (Michigan State University)
Modelnet - Source-routed static network topology emulator (Duke)
Harvard / NCTUns Network Simulator (NCTU Taiwan)
VINT - Virtual InterNetwork Testbed based on NS (USC / ISI)
Alpine - Application-Level Protocol Infrastructure for Network Experimentation (University of Washington)
People
Ana Kukec
Miljenko Mikuc
Marko Zec
Alumni:
Ivan Babic (Combis)
Nikola Djurak (Iskon Internet)
Zrinka Puljiz (University of Zagreb)
Sponsors
Croatian Ministry of Science and Technology - www.mzt.hr
|
|
|
|
|
|