Juniper EX9200 Features Manual page 11

List of Figures
Part 1
Chapter 1
Part 2
Chapter 4
Part 3
Chapter 7
Part 4
Chapter 12
Part 5
Chapter 13
Part 6
Chapter 17
Copyright © 2017, Juniper Networks, Inc.
Configuring Graceful Routing Engine Switchover (GRES)
Understanding How GRES Enables Uninterrupted Packet Forwarding
During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 1: Preparing for a Graceful Routing Engine Switchover . . . . . . . . . . . . . . . . . 6
Figure 2: Graceful Routing Engine Switchover Process . . . . . . . . . . . . . . . . . . . . . . . 7
Configuring Nonstop Bridging
Understanding How Nonstop Bridging Preserves Layer 2 Protocol
Information During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . 25
Figure 3: Nonstop Bridging Switchover Preparation Process . . . . . . . . . . . . . . . . . 26
Figure 4: Nonstop Bridging During a Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuring Nonstop Active Routing (NSR)
Understanding How Nonstop Active Routing Preserves Routing Protocol
Information During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . 35
Figure 5: Nonstop Active Routing Switchover Preparation Process . . . . . . . . . . . . 36
Figure 6: Nonstop Active Routing During a Switchover . . . . . . . . . . . . . . . . . . . . . . 37
Configuring Graceful Restart
Configuring Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 7: Layer 3 VPN Graceful Restart Topology . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Configuring Virtual Router Redundancy Protocol (VRRP)
Understanding How the VRRP Router Failover Mechanism Prevents
Network Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Figure 8: Basic VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Performing Unified In-Service Software Upgrade (ISSU)
Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 9: Unified ISSU Example Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
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