This chapter covers Junos software high-availability (HA) features supported on MX routers. These HA features serve to lessen, if not negate, the impacts of software or routing engine (RE) faults that would otherwise disrupt network operators and potential impact revenue.
The topics discussed in this chapter include:
Junos HA feature Overview
Graceful Routing Engine Switchover
Nonstop Routing and Nonstop Bridging
In-Service Software Upgrades