Juniper supports partitioning of a physical device such as a router into multiple logical systems. Each of these systems could have their independent routing/switching tables depending on the logical system type.
My question is where exactly (in the actual implemented network) would an administrator need to configure a logical system? In other words, what are the factors that trigger the creation of logical system in an actual network?
Any links to provide an insight into the same would also be appreciated.
P.S. Any idea what terminology is used by Cisco for providing logical systems?