Routing Simulations – Zebra Routing Software.pptVIP

Routing Simulations – Zebra Routing Software Eric Ciocca Dimitris Zacharopoulos Overview Current Routing simulators Routing Software Benefits of simulators Limitations Testing the two software packages Conclusion Current Routing Simulators Java SSFNet (SSF) Supports BGP (among others) Runs in Java NS-2 Multicast, various algorithmic routings Cnet Simulates general hosts/routers Routing Software Regular Routers I.O.S. (Cisco’s Operating System) Under Unix O.S. In.routed (typical unix routing daemon) Gated (Another unix daemon) Zebra Under Windows OS Integrated routing service Routing Software (cont.) Unix Routing Software Routed supports only RIP and static routes Gated Static, RIP, OSPF, BGP4, IPv6 Difficult configuration Zebra BGP, RIP, RIPng, OSPF v2, v3, IPv6 Easy CLI, just like Cisco’s IOS Zebra Routing Software Zebra makes your computer a router! And a Gateway router too!! Benefits Test new configurations New routing policies New protocols Don’t disturb the production network Use cheap PCs instead of expensive routers Zebra Architecture Zebra features Features Can handle unlimited # of Interfaces One process per one protocol Route Server Route Reflector integrated Multithread based technology Policy control and filtering The testing setup For our experiments we use: 2 Solaris with two Ethernet cards each 1 Cisco 2514 Zebra version 0.89 Concept behind our test bed We want to compare the communication: Router – zebra Zebra – zebra Router – router What to test: Bgp4 sessions, (routing updates, keepalive) Route reflection Default route propagation Software simulation of BGP4 BGP simulation is a part of the SSFNet simulator Allows simulation of arbitrarily sized networks Incorporates most major features of BGP Most recently added, route reflection Benefits of BGP Simulation We are not restrained by physical hardware We are able to simulate very large, elaborate networks No purchasing of routers to test layout No modification of real routers to test changes in