Mrt is a set of routing and network performance measurement tools, with bgp4+/bgp/ripng/rip2 routing software (now includes dvmrp and pim-dm)

mrt uses novel approaches to routing architecture design, and incorporates features such as parallel lightweight processes, multiple processor support, and shared memory. the object-oriented, modular design of the software encourages the rapid addition and prototyping of experimental routing protocol and inter-domain policy algorithms.

you can use mrt applications and libraries to:
* serve as the backbone routing software for your ipv6 or ipv4
network connection.
* simultaneously handle tasks such as routing policy communication,
routing policy calculation, and maintenance of a rib, and
distribute these tasks over multiple processors or multiple
machines
* generate and analyze route flap statistics
* generate real-time graphical maps of internet routing
* capture a bgp peering session and monitor it in real time
* record and replay sequences of events, such as routing failures