Redundancy Connection for a T320 Router, T640 Router, and T1600 Router . . 574
Determine Which Routing Engine You Are Logged In To . . . . . . . . . . . . . . . . . . . . 575
Display Routing Engine Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 575
Display the Router Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 576
Determining Routing Engine Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 577
Determine the Routing Engine Mastership by Checking Status . . . . . . . . . . 577
Determine Routing Engine Mastership by Checking the LEDs . . . . . . . . . . . 578
Log in To Backup Routing Engine If Graceful Switchover is Configured . . . . 578
Manually Configue Master and Backup Routing Engines . . . . . . . . . . . . . . . . . . . 578
Manually Switching Routing Engine Mastership . . . . . . . . . . . . . . . . . . . . . . . . . . 581
Determining Why Mastership Switched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 582
Configuring the Backup Routing Engine to Assume Mastership on Failure of
Keepalives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585
Avoid Redundancy Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586
Operate the Same Type of Routing Engine and Junos OS . . . . . . . . . . . . . . 586
Use the Groups Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586
Synchronize Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 588
Copy a Configuration File from One Routing Engine to Another . . . . . . . . . 588
Use the Proper Shutdown Process on a Backup Routing Engine . . . . . . . . . 589
Chapter 29 Monitoring Redundant Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591
Checklist for Monitoring Redundant Routing Engines . . . . . . . . . . . . . . . . . . . . . . 591
Understanding Redundant Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592
Redundant Routing Engines Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592
Redundant Routing Engine Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 593
M10i Router Routing Engine Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . 593
M20 Router Routing Engine Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . 594
M40e and M160 Router Routing Engine Redundancy . . . . . . . . . . . . . . . . . 594
M320 Router Routing Engine Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . 595
T320 Router, T640 Router, and T1600 Router Routing Engine
Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 596
TX Matrix Router and TX Matrix Plus Router Routing Engine
Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 598
Redundant Routing Engine Automatic Failover Overview . . . . . . . . . . . . . . . . . . 598
Using the Redundant Routing Engine Configuration . . . . . . . . . . . . . . . . . . . . . . 599
Check the Default Routing Engine Redundancy Behavior . . . . . . . . . . . . . . . . . . 600
Display the Redundant Routing Engines Installed in the Router . . . . . . . . . . . . . 600
Display Redundant Routing Engine Mastership and Backup . . . . . . . . . . . . . . . . 602
Displaying Redundant Routing Engine Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Manually Switch from Master to Backup Routing Engine . . . . . . . . . . . . . . . . . . 603
Replace a Redundant Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
Chapter 30 Monitoring Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
Checklist for Monitoring Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . 607
Understanding Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 608
Redundant Power Supplies Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 608
M5/M10 Router Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . 609
M7i Router Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610
M10i Router Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610
M20 Router Redundant Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611
xviiCopyright © 2012, Juniper Networks, Inc.
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