Juniper EX9200 Series Features Manual

High Availability Feature Guide for EX9200

Switches

Modified: 2017-02-23

Juniper Networks, Inc.

1133 Innovation Way

Sunnyvale, California 94089

USA

408-745-2000

www.juniper.net

Juniper Networks, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United

States and other countries. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other

trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.

Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify,

transfer, or otherwise revise this publication without notice.

High Availability Feature Guide for EX9200 Switches

The information in this document is current as of the date on the title page.

YEAR 2000 NOTICE

Juniper Networks hardware and software products are Year 2000 compliant. Junos OS has no known time-related limitations through the

year 2038. However, the NTP application is known to have some difficulty in the year 2036.

END USER LICENSE AGREEMENT

The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with) Juniper Networks

software. Use of such software is subject to the terms and conditions of the End User License Agreement (“EULA”) posted at

http://www.juniper.net/support/eula.html. By downloading, installing or using such software, you agree to the terms and conditions of

that EULA.

Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Supported Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Using the Examples in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Merging a Full Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Merging a Snippet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx

Part 1 Configuring Graceful Routing Engine Switchover (GRES)

Chapter 1 Understanding How GRES Enables Uninterrupted Packet Forwarding

During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Understanding Graceful Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . 3

Graceful Routing Engine Switchover Concepts . . . . . . . . . . . . . . . . . . . . . . . . . 3

Effects of a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 2 GRES System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Graceful Routing Engine Switchover System Requirements . . . . . . . . . . . . . . . . . . 11

Graceful Routing Engine Switchover Platform Support . . . . . . . . . . . . . . . . . . 11

Graceful Routing Engine Switchover Feature Support . . . . . . . . . . . . . . . . . . . 12

Graceful Routing Engine Switchover DPC Support . . . . . . . . . . . . . . . . . . . . . 13

Graceful Routing Engine Switchover and Subscriber Access . . . . . . . . . . . . . . 13

Graceful Routing Engine Switchover PIC Support . . . . . . . . . . . . . . . . . . . . . . 14

Requirements for Routers with a Backup Router Configuration . . . . . . . . . . . . . . . 15

Chapter 3 Configuring GRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Configuring Graceful Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Enabling Graceful Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . 17

Configuring Graceful Routing Engine Switchover with Graceful Restart . . . . . 17

Synchronizing the Routing Engine Configuration . . . . . . . . . . . . . . . . . . . . . . . 18

Verifying Graceful Routing Engine Switchover Operation . . . . . . . . . . . . . . . . 19

Resetting Local Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Example: Configuring IS-IS for GRES with Graceful Restart . . . . . . . . . . . . . . . . . 20

Part 2 Configuring Nonstop Bridging

Chapter 4 Understanding How Nonstop Bridging Preserves Layer 2 Protocol

Information During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . 25

Nonstop Bridging Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter 5 Nonstop Bridging System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Nonstop Bridging System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Platform Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Protocol Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 6 Configuring Nonstop Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Configuring Nonstop Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Enabling Nonstop Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Synchronizing the Routing Engine Configuration . . . . . . . . . . . . . . . . . . . . . . . 31

Verifying Nonstop Bridging Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Resetting Local Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Part 3 Configuring Nonstop Active Routing (NSR)

Chapter 7 Understanding How Nonstop Active Routing Preserves Routing Protocol

Information During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . 35

Nonstop Active Routing Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Chapter 8 Nonstop Active Routing System Requirements . . . . . . . . . . . . . . . . . . . . . . . 39

Nonstop Active Routing System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Nonstop Active Routing Platform and Switching Platform Support . . . . . . . 39

Nonstop Active Routing Protocol and Feature Support . . . . . . . . . . . . . . . . . . 41

Nonstop Active Routing BFD Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Nonstop Active Routing BGP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Nonstop Active Routing Layer 2 Circuit and VPLS Support . . . . . . . . . . . . . . 46

Nonstop Active Routing PIM Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Nonstop Active Routing MSDP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Nonstop Active Routing Support for RSVP-TE LSPs . . . . . . . . . . . . . . . . . . . 49

Chapter 9 Configuring Nonstop Active Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Configuring Nonstop Active Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Enabling Nonstop Active Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Synchronizing the Routing Engine Configuration . . . . . . . . . . . . . . . . . . . . . . . 54

Verifying Nonstop Active Routing Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Tracing Nonstop Active Routing Synchronization Events . . . . . . . . . . . . . . . . . . . . 55

traceoptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Example: Configuring Nonstop Active Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Part 4 Configuring Graceful Restart

Chapter 10 Understanding How Graceful Restart Enables Uninterrupted Packet

Forwarding When a Router Is Restarted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Graceful Restart Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Graceful Restart for Aggregate and Static Routes . . . . . . . . . . . . . . . . . . . . . . . . . 66

High Availability Feature Guide for EX9200 Switches

Graceful Restart and Routing Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

IS-IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

OSPF and OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

PIM Sparse Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

RIP and RIPng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Graceful Restart and MPLS-Related Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

LDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

RSVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

CCC and TCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Graceful Restart and Layer 2 and Layer 3 VPNs . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Graceful Restart on Logical Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Chapter 11 Graceful Restart System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Graceful Restart System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Chapter 12 Configuring Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Enabling Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Configuring Routing Protocols Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Enabling Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Configuring Graceful Restart Options for BGP . . . . . . . . . . . . . . . . . . . . . . . . . 77

Configuring Graceful Restart Options for ES-IS . . . . . . . . . . . . . . . . . . . . . . . . 78

Configuring Graceful Restart Options for IS-IS . . . . . . . . . . . . . . . . . . . . . . . . 78

Configuring Graceful Restart Options for OSPF and OSPFv3 . . . . . . . . . . . . . 79

Configuring Graceful Restart Options for RIP and RIPng . . . . . . . . . . . . . . . . . 81

Configuring Graceful Restart Options for PIM Sparse Mode . . . . . . . . . . . . . . 81

Tracking Graceful Restart Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Configuring Graceful Restart for MPLS-Related Protocols . . . . . . . . . . . . . . . . . . 83

Configuring Graceful Restart Globally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Configuring Graceful Restart Options for RSVP, CCC, and TCC . . . . . . . . . . . 83

Configuring Graceful Restart Options for LDP . . . . . . . . . . . . . . . . . . . . . . . . . 84

Configuring VPN Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Configuring Graceful Restart Globally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Configuring Graceful Restart for the Routing Instance . . . . . . . . . . . . . . . . . . 85

Configuring Logical System Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Enabling Graceful Restart Globally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Configuring Graceful Restart for a Routing Instance . . . . . . . . . . . . . . . . . . . . 87

Configuring Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Example: Managing Helper Modes for OSPF Graceful Restart . . . . . . . . . . . . . . . 112

Part 5 Configuring Virtual Router Redundancy Protocol (VRRP)

Chapter 13 Understanding How the VRRP Router Failover Mechanism Prevents

Network Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Understanding VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Junos OS Support for VRRPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Junos OS VRRP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

IPv6 VRRP Checksum Behavioral Differences . . . . . . . . . . . . . . . . . . . . . . . . 122

VRRP Interoperability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Upgrading from VRRPv2 to VRRPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Table of Contents

Functionality of VRRPv3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

VRRPv3 Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

VRRPv3 Advertisement Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Unified ISSU for VRRPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Improving the Convergence Time for VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Chapter 14 Configuring VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Configuring the Startup Period for VRRP Operations . . . . . . . . . . . . . . . . . . . . . . 129

Configuring Basic VRRP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Configuring VRRP Authentication (IPv4 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Configuring the Advertisement Interval for the VRRP Master Router . . . . . . . . . . 135

Modifying the Advertisement Interval in Seconds . . . . . . . . . . . . . . . . . . . . . 136

Modifying the Advertisement Interval in Milliseconds . . . . . . . . . . . . . . . . . . 136

Configuring a Backup Router to Preempt the VRRP Master Router . . . . . . . . . . . 138

Modifying the Preemption Hold-Time Value for the VRRP Master Router . . . . . . 138

Configuring the Asymmetric Hold Time for VRRP Routers . . . . . . . . . . . . . . . . . . 139

Configuring an Interface to Accept All Packets Destined for the Virtual IP Address

of a VRRP Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Configuring a Logical Interface to Be Tracked for a VRRP Group . . . . . . . . . . . . . 141

Configuring a Route to Be Tracked for a VRRP Group . . . . . . . . . . . . . . . . . . . . . . 143

Configuring Inheritance for a VRRP Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Configuring the Silent Period to Avoid Alarms Due to Delay in Receiving VRRP

Advertisement Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Configuring Passive ARP Learning for Backup VRRP Routers . . . . . . . . . . . . . . . . 147

Enabling the Distributed Periodic Packet Management Process for VRRP . . . . . 148

Configuring VRRP to Improve Convergence Time . . . . . . . . . . . . . . . . . . . . . . . . . 149

Configuring VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Configuring VRRP for IPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Configuring VRRP Route Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Tracing VRRP Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Part 6 Performing Unified In-Service Software Upgrade (ISSU)

Chapter 15 Understanding How Unified ISSU Enables Software Upgrades with

Minimal Traffic Disruption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Upgrading Routers Using Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Getting Started with Unified In-Service Software Upgrade . . . . . . . . . . . . . . . . . 159

Chapter 16 Unified ISSU System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Unified ISSU System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

General Unified ISSU Considerations for All Platforms . . . . . . . . . . . . . . . . . 162

Unified ISSU Considerations for MX Series Routers . . . . . . . . . . . . . . . . . . . . 163

Unified ISSU Considerations for PTX Series Routers . . . . . . . . . . . . . . . . . . . 163

Unified ISSU Considerations for T Series Routers . . . . . . . . . . . . . . . . . . . . . 164

Unified ISSU Platform Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Unified ISSU Protocol Support for M Series, MX Series, and T Series Routers

and EX9200 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Unified ISSU Feature Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

High Availability Feature Guide for EX9200 Switches

Unified ISSU PIC Support Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

PIC Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

SONET/SDH PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Fast Ethernet and Gigabit Ethernet PICs . . . . . . . . . . . . . . . . . . . . . . . . . 170

Channelized PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Tunnel Services PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

ATM PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Serial PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

DS3, E1, E3, and T1 PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Enhanced IQ PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Enhanced IQ2 Ethernet Services Engine (ESE) PIC . . . . . . . . . . . . . . . . 176

Unified ISSU FPC Support on T4000 Routers . . . . . . . . . . . . . . . . . . . . . 177

Unified ISSU Support on MX Series 3D Universal Edge Routers . . . . . . . 177

Chapter 17 Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Best Practices for Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Before You Begin a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Verify That the Master and Backup Routing Engines Are Running the Same

Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Back Up the Router Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Verify That Graceful Routing Engine Switchover and Nonstop Active Routing

Are Configured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Disable Inline Flow Monitoring Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Example: Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Verifying a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

Managing and Tracing BFD Sessions During Unified ISSU Procedures . . . . . . . . 215

Part 7 Monitoring High Availability

Chapter 18 Routine Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Resetting Local Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Tracing Restart Signaling-Based Helper Mode Events for OSPF Graceful

Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Verifying Graceful Restart Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Graceful Restart Operational Mode Commands . . . . . . . . . . . . . . . . . . . . . . 221

Verifying BGP Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Verifying IS-IS and OSPF Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Verifying CCC and TCC Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Part 8 Troubleshooting

Chapter 19 Troubleshooting Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Troubleshooting Unified ISSU Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Part 9 Configuration Statements and Operational Commands

Chapter 20 Configuration Statements: GRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

graceful-switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

Table of Contents

Chapter 21 Configuration Statements: Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . 233

disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

graceful-restart (Enabling Globally) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

helper-disable (Multiple Protocols) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

maximum-helper-recovery-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

maximum-helper-restart-time (RSVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

maximum-neighbor-reconnect-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

maximum-neighbor-recovery-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

no-strict-lsa-checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

notify-duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

reconnect-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

recovery-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

restart-duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

restart-time (BGP Graceful Restart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

stale-routes-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

traceoptions (Protocols) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Chapter 22 Configuration Statements: NSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

nonstop-bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Chapter 23 Configuration Statements: NSR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

synchronize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

nonstop-routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

traceoptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Chapter 24 Configuration Statements: VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

accept-data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

advertise-interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

asymmetric-hold-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

authentication-key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

authentication-type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

bandwidth-threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

delegate-processing (VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

failover-delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

fast-interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267

global-advertisements-threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

hold-time (VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

inet6-advertise-interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

preempt (VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

priority (Protocols VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

priority-cost (VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

priority-hold-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

route (Interfaces) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

skew-timer-disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

startup-silent-period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

traceoptions (Protocols VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

track (VRRP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

version-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

virtual-address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

High Availability Feature Guide for EX9200 Switches

virtual-inet6-address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

virtual-link-local-address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

vrrp-group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

vrrp-inet6-group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Chapter 25 Configuration Statements: Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

bfd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

no-issu-timer-negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292

traceoptions (Protocols BFD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

Chapter 26 Operational Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

request system software in-service-upgrade (MX Series 3D Universal Edge

Routers and EX9200 Switches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296

request system software validate in-service-upgrade . . . . . . . . . . . . . . . . . . . . . 313

show system switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316

Table of Contents

High Availability Feature Guide for EX9200 Switches

List of Figures

Part 1 Configuring Graceful Routing Engine Switchover (GRES)

Chapter 1 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

Part 2 Configuring Nonstop Bridging

Chapter 4 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

Part 3 Configuring Nonstop Active Routing (NSR)

Chapter 7 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

Part 4 Configuring Graceful Restart

Chapter 12 Configuring Graceful Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 7: Layer 3 VPN Graceful Restart Topology . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Part 5 Configuring Virtual Router Redundancy Protocol (VRRP)

Chapter 13 Understanding How the VRRP Router Failover Mechanism Prevents

Network Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 8: Basic VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Part 6 Performing Unified In-Service Software Upgrade (ISSU)

Chapter 17 Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Figure 9: Unified ISSU Example Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

High Availability Feature Guide for EX9200 Switches

List of Tables

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Table 1: Notice Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Part 1 Configuring Graceful Routing Engine Switchover (GRES)

Chapter 1 Understanding How GRES Enables Uninterrupted Packet Forwarding

During a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 3: Effects of a Routing Engine Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 2 GRES System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 4: Graceful Routing Engine Switchover Feature Support . . . . . . . . . . . . . . . 12

Part 3 Configuring Nonstop Active Routing (NSR)

Chapter 8 Nonstop Active Routing System Requirements . . . . . . . . . . . . . . . . . . . . . . . 39

Table 5: Nonstop Active Routing Platform Support . . . . . . . . . . . . . . . . . . . . . . . . 39

Table 6: Nonstop Active Routing Protocol and Feature Support . . . . . . . . . . . . . . 41

Part 5 Configuring Virtual Router Redundancy Protocol (VRRP)

Chapter 13 Understanding How the VRRP Router Failover Mechanism Prevents

Network Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table 7: VRRPv2 to VRRPv3 Transition Steps and Events . . . . . . . . . . . . . . . . . . 124

Chapter 14 Configuring VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Table 8: Interface State and Priority Cost Usage . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Part 6 Performing Unified In-Service Software Upgrade (ISSU)

Chapter 15 Understanding How Unified ISSU Enables Software Upgrades with

Minimal Traffic Disruption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Table 9: Locating the Information You Need to Work With ISSU . . . . . . . . . . . . . 159

Chapter 16 Unified ISSU System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Table 10: Unified ISSU Support for Dual Routing Engine Platforms . . . . . . . . . . . 165

Table 11: Unified ISSU PIC Support: SONET/SDH . . . . . . . . . . . . . . . . . . . . . . . . . 169

Table 12: Unified ISSU PIC Support: Fast Ethernet and Gigabit Ethernet . . . . . . . 171

Table 13: Unified ISSU PIC Support: Channelized . . . . . . . . . . . . . . . . . . . . . . . . . 173

Table 14: Unified ISSU PIC Support: Tunnel Services . . . . . . . . . . . . . . . . . . . . . . 174

Table 15: Unified ISSU PIC Support: ATM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Table 16: Unified ISSU Support: Enhanced IQ2 Ethernet Services Engine (ESE)

PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Table 17: Unified ISSU Support: MX Series Router MPCs . . . . . . . . . . . . . . . . . . . . 178

Table 18: Unified ISSU Support: MX Series Router MICs . . . . . . . . . . . . . . . . . . . . 179

Chapter 17 Performing a Unified ISSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Table 19: Routing Engine Status Before Upgrading . . . . . . . . . . . . . . . . . . . . . . . . 194

Table 20: Routing Engine Status After Upgrading and Rebooting Both Routing

Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Table 21: Routing Engine Status After Upgrading, Rebooting, and Switching

Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

Table 22: Routing Engine Status Before Upgrading and Manually Rebooting the

Backup Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Table 23: Routing Engine Status After Upgrading and Before Manually Rebooting

the Backup Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Table 24: Routing Engine Status After Upgrading, Manually Rebooting, and

Before Switching Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Table 25: Routing Engine Status After Upgrading, Manually Rebooting, and

Switching Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Table 26: Routing Engine Status Before Upgrading and Rebooting One Routing

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Table 27: Routing Engine Status After Upgrading One Routing Engine and Before

Upgrading the Other Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Table 28: Routing Engine Status After Upgrading, Manually Rebooting, and

Switching Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

Part 9 Configuration Statements and Operational Commands

Chapter 26 Operational Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

Table 29: show system switchover Output Fields . . . . . . . . . . . . . . . . . . . . . . . . . 318

High Availability Feature Guide for EX9200 Switches

About the Documentation

•

Documentation and Release Notes on page xv

•

Supported Platforms on page xv

•

Using the Examples in This Manual on page xv

•

Documentation Conventions on page xvii

•

Documentation Feedback on page xix

•

Requesting Technical Support on page xix

Documentation and Release Notes

To obtain the most current version of all Juniper Networks

®

technical documentation,

see the product documentation page on the Juniper Networks website at

http://www.juniper.net/techpubs/.

If the information in the latest release notes differs from the information in the

documentation, follow the product Release Notes.

Juniper Networks Books publishes books by Juniper Networks engineers and subject

matter experts. These books go beyond the technical documentation to explore the

nuances of network architecture, deployment, and administration. The current list can

be viewed at http://www.juniper.net/books.

Supported Platforms

For the features described in this document, the following platforms are supported:

•

EX Series

Using the Examples in This Manual

If you want to use the examples in this manual, you can use the load merge or the load

merge relative command. These commands cause the software to merge the incoming

configuration into the current candidate configuration. The example does not become

active until you commit the candidate configuration.

If the example configuration contains the top level of the hierarchy (or multiple

hierarchies), the example is a full example. In this case, use the load merge command.

If the example configuration does not start at the top level of the hierarchy, the example

is a snippet. In this case, use the load merge relative command. These procedures are

described in the following sections.

Merging a Full Example

To merge a full example, follow these steps:

1. From the HTML or PDF version of the manual, copy a configuration example into a

text file, save the file with a name, and copy the file to a directory on your routing

platform.

For example, copy the following configuration to a file and name the file ex-script.conf.

Copy the ex-script.conf file to the /var/tmp directory on your routing platform.

system {

scripts {

commit {

file ex-script.xsl;

}

interfaces {

fxp0 {

disable;

unit 0 {

family inet {

address 10.0.0.1/24;

}

2. Merge the contents of the file into your routing platform configuration by issuing the

load merge configuration mode command:

[edit]

user@host# load merge /var/tmp/ex-script.conf

load complete

Merging a Snippet

To merge a snippet, follow these steps:

1. From the HTML or PDF version of the manual, copy a configuration snippet into a text

file, save the file with a name, and copy the file to a directory on your routing platform.

For example, copy the following snippet to a file and name the file

ex-script-snippet.conf. Copy the ex-script-snippet.conf file to the /var/tmp directory

on your routing platform.

commit {

file ex-script-snippet.xsl; }

2. Move to the hierarchy level that is relevant for this snippet by issuing the following

configuration mode command:

High Availability Feature Guide for EX9200 Switches

[edit]

user@host# edit system scripts

[edit system scripts]

3. Merge the contents of the file into your routing platform configuration by issuing the

load merge relative configuration mode command:

[edit system scripts]

user@host# load merge relative /var/tmp/ex-script-snippet.conf

load complete

For more information about the load command, see CLI Explorer.

Documentation Conventions

Table 1 on page xvii defines notice icons used in this guide.

Table 1: Notice Icons

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Indicates a situation that might result in loss of data or hardware damage.Caution

Alerts you to the risk of personal injury or death.Warning

Alerts you to the risk of personal injury from a laser.Laser warning

Indicates helpful information.Tip

Alerts you to a recommended use or implementation.Best practice

Table 2 on page xvii defines the text and syntax conventions used in this guide.

Table 2: Text and Syntax Conventions

ExamplesDescriptionConvention

To enter configuration mode, type the

configure command:

user@host> configure

Represents text that you type.Bold text like this

About the Documentation

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

user@host> show chassis alarms

No alarms currently active

Represents output that appears on the

terminal screen.

Fixed-width text like this

•

A policy term is a named structure

that defines match conditions and

actions.

•

Junos OS CLI User Guide

•

RFC 1997, BGP Communities Attribute

•

Introduces or emphasizes important

new terms.

•

Identifies guide names.

•

Identifies RFC and Internet draft titles.

Italic text like this

Configure the machine’s domain name:

[edit]

root@# set system domain-name

domain-name

Represents variables (options for which

you substitute a value) in commands or

configuration statements.

Italic text like this

•

To configure a stub area, include the

stub statement at the [edit protocols

ospf area area-id] hierarchy level.

•

The console port is labeled CONSOLE.

Represents names of configuration

statements, commands, files, and

directories; configuration hierarchy levels;

or labels on routing platform

components.

Text like this

stub <default-metric metric>;Encloses optional keywords or variables.< > (angle brackets)

broadcast | multicast

(string1 | string2 | string3)

Indicates a choice between the mutually

exclusive keywords or variables on either

side of the symbol. The set of choices is

often enclosed in parentheses for clarity.

| (pipe symbol)

rsvp { # Required for dynamic MPLS onlyIndicates a comment specified on the

same line as the configuration statement

to which it applies.

# (pound sign)

community name members [

community-ids ]

Encloses a variable for which you can

substitute one or more values.

[ ] (square brackets)

[edit]

routing-options {

static {

route default {

nexthop address;

retain;

}

Identifies a level in the configuration

hierarchy.

Indention and braces ( { } )

Identifies a leaf statement at a

configuration hierarchy level.

; (semicolon)

GUI Conventions

•

In the Logical Interfaces box, select

All Interfaces.

•

To cancel the configuration, click

Cancel.

Represents graphical user interface (GUI)

items you click or select.

Bold text like this

High Availability Feature Guide for EX9200 Switches

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

In the configuration editor hierarchy,

select Protocols>Ospf.

Separates levels in a hierarchy of menu

selections.

> (bold right angle bracket)

Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can

improve the documentation. You can provide feedback by using either of the following

methods:

•

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Requesting Technical Support

Technical product support is available through the Juniper Networks Technical Assistance

Center (JTAC). If you are a customer with an active J-Care or Partner Support Service

support contract, or are covered under warranty, and need post-sales technical support,

you can access our tools and resources online or open a case with JTAC.

•

JTAC policies—For a complete understanding of our JTAC procedures and policies,

review the JTAC User Guide located at

http://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.

•

Product warranties—For product warranty information, visit

http://www.juniper.net/support/warranty/.

•

JTAC hours of operation—The JTAC centers have resources available 24 hours a day,

7 days a week, 365 days a year.

Self-Help Online Tools and Resources

For quick and easy problem resolution, Juniper Networks has designed an online

self-service portal called the Customer Support Center (CSC) that provides you with the

following features:

•

Find CSC offerings: http://www.juniper.net/customers/support/

•

Search for known bugs: http://www2.juniper.net/kb/

•

Find product documentation: http://www.juniper.net/techpubs/

•

Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/

About the Documentation

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Download the latest versions of software and review release notes:

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Search technical bulletins for relevant hardware and software notifications:

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Join and participate in the Juniper Networks Community Forum:

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Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/

To verify service entitlement by product serial number, use our Serial Number Entitlement

(SNE) Tool: https://tools.juniper.net/SerialNumberEntitlementSearch/

Opening a Case with JTAC

You can open a case with JTAC on the Web or by telephone.

•

Use the Case Management tool in the CSC at http://www.juniper.net/cm/.

•

Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).

For international or direct-dial options in countries without toll-free numbers, see

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High Availability Feature Guide for EX9200 Switches

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Juniper EX9200 Series Features Manual

Juniper EX9200 Series Features Manual

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