Administrator Guide

VRRP Benefits................................................................................................................................... 886
VRRP Implementation...................................................................................................................... 886
VRRP Configuration..........................................................................................................................887
Configuration Task List............................................................................................................... 887
Setting VRRP Initialization Delay................................................................................................ 897
Sample Configurations.....................................................................................................................898
VRRP for an IPv4 Configuration.................................................................................................898
VRRP in a VRF Configuration......................................................................................................903
55 Z-Series Debugging and Diagnostics.........................................................909
Offline Diagnostics........................................................................................................................... 909
Important Points to Remember................................................................................................. 909
Running Offline Diagnostics...................................................................................................... 909
TRACE Logs....................................................................................................................................... 913
Auto Save on Crash or Rollover..................................................................................................914
Last Restart Reason...........................................................................................................................914
Line Card Restart Causes and Reasons...................................................................................... 914
Hardware Watchdog Timer.............................................................................................................. 914
show hardware Commands............................................................................................................. 914
Environmental Monitoring................................................................................................................ 917
......................................................................................................................................................917
Recognize an Over-Temperature Condition............................................................................. 917
Troubleshoot an Over-Temperature Condition........................................................................918
Recognize an Under-Voltage Condition....................................................................................918
Troubleshoot an Under-Voltage Condition...............................................................................918
Buffer Tuning.....................................................................................................................................919
Buffer Tuning Points...................................................................................................................920
Decide to Tune Buffers............................................................................................................... 921
Using the Buffer Tuning Commands..........................................................................................921
Sample Buffer Profile Configuration.......................................................................................... 923
Troubleshooting Packet Loss...........................................................................................................924
Displaying Drop Counters.......................................................................................................... 924
Displaying Dataplane Statistics...................................................................................................925
Displaying Stack Member Counters...........................................................................................926
Enabling Application Core Dumps...................................................................................................926
Mini Core Dumps.............................................................................................................................. 927
Enabling TCP Dumps........................................................................................................................927
56 Standards Compliance..................................................................................929
IEEE Compliance.............................................................................................................................. 929
RFC and I-D Compliance................................................................................................................. 930
General Internet Protocols.........................................................................................................930