JUNOS 9.3 High Availability Configuration Guide DVD Home Techpubs Home Report an Error Collapse TOC List of Figures List of Tables Index Index of Statements and Commands Entire manual as PDF		About This Guide Objectives Audience Supported Routing Platforms Using the Indexes Using the Examples in This Manual Documentation Conventions List of Technical Publications Documentation Feedback Requesting Technical Support High Availability Overview Routing Engine Redundancy Graceful Routing Engine Switchover Nonstop Bridging Nonstop Active Routing Graceful Restart Nonstop Active Routing Versus Graceful Restart Effects of a Routing Engine Switchover VRRP Unified ISSU Related Features Routing Engine and Switching Control Board Redundancy Overview Routing Engine Redundancy Platform Support Conditions That Trigger a Routing Engine Failover Default Routing Engine Redundancy Behavior Routing Engine Redundancy on a TX Matrix Platform Situations That Require You to Halt Routing Engines Switching Control Board Redundancy Redundant CFEBs on the M10i Router Redundant FEBs on the M120 Router Redundant SSBs on the M20 Router Redundant SFMs on the M40e and M160 Routers Routing Engine and Switching Control Board Redundancy Configuration Guidelines Chassis Redundancy Hierarchy Initial Routing Engine Configuration Copying a Configuration File from One Routing Engine to the Other Loading a Software Package from the Other Routing Engine Configuring Routing Engine Redundancy Modifying the Default Routing Engine Mastership Configuring Automatic Failover to the Backup Routing Engine Without Interruption to Packet Forwarding On Detection of a Hard Disk Error on the Master Routing Engine On Detection of a Loss of Keepalive Signal from the Master Routing Engine When A Software Process Fails Manually Switching Routing Engine Mastership Verifying Routing Engine Redundancy Status Configuring CFEB Redundancy on the M10i Router Configuring FEB Redundancy on the M120 Router Example: Configuring FEB Redundancy Configuring SFM Redundancy on M40e and M160 Routers Configuring SSB Redundancy on the M20 Router Summary of Routing Engine and Switching Control Board Redundancy Statements cfeb description failover on-disk-failure failover on-loss-of-keepalives failover other-routing-engine feb feb (Creating a Redundancy Group) feb (Assigning a FEB to a Redundancy Group) keepalive-time no-auto-failover redundancy redundancy-group routing-engine sfm ssb Graceful Routing Engine Switchover Overview Graceful Routing Engine Switchover Concepts Graceful Routing Engine Switchover System Requirements Graceful Routing Engine Switchover Platform Support Graceful Routing Engine Switchover Feature Support Graceful Routing Engine Switchover DPC Support Graceful Routing Engine Switchover PIC Support Graceful Routing Engine Switchover Configuration Guidelines Configuring Graceful Routing Engine Switchover Enabling Graceful Routing Engine Switchover Synchronizing the Routing Engine Configuration Verifying Graceful Routing Engine Switchover Operation Requirements for Routers with a Backup Router Configuration Resetting Local Statistics Summary of Graceful Routing Engine Switchover Configuration Statements graceful-switchover Nonstop Bridging Overview Nonstop Bridging Concepts Nonstop Bridging System Requirements Platform Support Protocol Support Nonstop Bridging Configuration Guidelines Configuring Nonstop Bridging Enabling Nonstop Bridging Synchronizing the Routing Engine Configuration Verifying Nonstop Bridging Operation Summary of Nonstop Bridging Statements nonstop-bridging Nonstop Active Routing Overview Nonstop Active Routing Concepts Nonstop Active Routing System Requirements Nonstop Active Routing Platform Support Nonstop Active Routing Protocol and Feature Support Nonstop Active Routing BFD Support Nonstop Active Routing Layer 2 Circuit and LDP-Based VPLN Support Nonstop Active Routing PIM Support Nonstop Active Routing Configuration Guidelines Configuring Nonstop Active Routing Enabling Nonstop Active Routing Synchronizing the Routing Engine Configuration Verifying Nonstop Active Routing Operation Tracing Nonstop Active Routing Synchronization Events Resetting Local Statistics Example: Configuring Nonstop Active Routing Summary of Nonstop Active Routing Configuration Statements commit synchronize nonstop-routing traceoptions Graceful Restart Overview Graceful Restart Concepts Graceful Restart System Requirements Aggregate and Static Routes Routing Protocols BGP ES-IS IS-IS OSPF and OSPFv3 PIM Sparse Mode RIP and RIPng MPLS-Related Protocols LDP RSVP CCC and TCC Layer 2 and Layer 3 VPNs Logical Systems Graceful Restart Configuration Guidelines Configuring Aggregate and Static Route Graceful Restart Configuring Routing Protocols Graceful Restart Configuring Graceful Restart Globally Configuring Graceful Restart Options for BGP Configuring Graceful Restart Options for ES-IS Configuring Graceful Restart Options for IS-IS Configuring Graceful Restart Options for OSPF and OSPFv3 Configuring Graceful Restart Options for RIP and RIPng Configuring Graceful Restart Options for PIM Sparse Mode Tracking Graceful Restart Events Configuring Graceful Restart for MPLS-Related Protocols Configuring Graceful Restart Globally Configuring Graceful Restart Options for RSVP, CCC, and TCC Configuring Graceful Restart Options for LDP Configuring VPN Graceful Restart Configuring Graceful Restart Globally Configuring Graceful Restart for the Routing Instance Configuring Logical System Graceful Restart Configuring Graceful Restart Globally Configuring Graceful Restart for a Routing Instance Verifying Graceful Restart Operation Graceful Restart Operational Mode Commands Verifying BGP Graceful Restart Verifying IS-IS and OSPF Graceful Restart Verifying CCC and TCC Graceful Restart Example: Configuring Graceful Restart Summary of Graceful Restart Configuration Statements disable graceful-restart helper-disable maximum-helper-recovery-time maximum-helper-restart-time maximum-neighbor-reconnect-time maximum-neighbor-recovery-time no-strict-lsa-checking notify-duration reconnect-time recovery-time restart-duration restart-time stale-routes-time traceoptions VRRP Overview VRRP Configuration Guidelines VRRP Configuration Hierarchy VRRP for IPv6 Configuration Hierarchy VRRP Trace and Startup Configuration Statements Configuring Basic VRRP Support Configuring VRRP Authentication (IPv4 Only) Configuring the Advertisement Interval for the VRRP Master Router Modifying the Advertisement Interval in Seconds Modifying the Advertisement Interval in Milliseconds Configuring a Backup Router to Preempt the Master Router Modifying the Preemption Hold-Time Value Configuring an Interface to Accept Packets Destined for the Virtual IP Address Configuring a Logical Interface to Be Tracked Configuring a Route to Be Tracked Tracing VRRP Operations Configuring the Silent Period Configuring Passive ARP Learning for Backup VRRP Routers Example: Configuring VRRP Example: Configuring VRRP for IPv6 Example: Configuring VRRP Route Tracking Summary of VRRP Configuration Statements accept-data advertise-interval authentication-key authentication-type bandwidth-threshold fast-interval hold-time inet6-advertise-interval interface no-accept-data no-preempt preempt priority priority-cost priority-hold-time route startup-silent-period traceoptions track virtual-address virtual-inet6-address virtual-link-local-address vrrp-group vrrp-inet6-group Unified ISSU Overview Unified ISSU Concepts Unified ISSU Process on TX Matrix Platform Unified ISSU System Requirements Unified ISSU JUNOS Software Release Support Unified ISSU Platform Support Unified ISSU Protocol Support Unified ISSU Support for Layer 2 Control Protocol Process (L2CPD) Unified ISSU Feature Support Unified ISSU PIC Support PIC Considerations SONET/SDH PICs Fast Ethernet and Gigabit Ethernet PICs Channelized PICs Tunnel Services PICs ATM PICs Serial PICs E3 PICs Unified ISSU DPC Support Unified ISSU Configuration Guidelines Best Practices Before You Begin Verify That the Master and Backup Routing Engines Are Running the Same Software Version Back Up the Router's Software Verify That Graceful Routing Engine Switchover and Nonstop Active Routing Are Configured Performing a Unified ISSU Upgrading and Rebooting Both Routing Engines Automatically Upgrading Both Routing Engines and Rebooting the New Backup Routing Engine Manually Upgrading and Rebooting Only One Routing Engine Verifying a Unified ISSU Troubleshooting Unified ISSU Problems Managing and Tracing BFD Sessions During Unified ISSU Procedures Unified ISSU Configuration Statements Summary no-issu-timer-negotiation traceoptions Index Index Index of Statements and Commands