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Juniper MX Series by Harry Reynolds, Douglas Richard Hanks Jr.

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Chapter 9. Junos High Availability on MX Routers

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

  • Graceful Restart

  • Nonstop Routing and Nonstop Bridging

  • In-Service Software Upgrades

  • ISSU demonstration

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