Reference Guide

Proxy Gateway in VLT Domains.......................................................................................................869
LLDP organizational TLV for proxy gateway.............................................................................. 871
Sample Configuration Scenario for VLT Proxy Gateway...........................................................872
Configuring an LLDP VLT Proxy Gateway....................................................................................... 874
54 Virtual Router Redundancy Protocol (VRRP)..............................................875
VRRP Overview..................................................................................................................................875
VRRP Benefits....................................................................................................................................876
VRRP Implementation.......................................................................................................................876
VRRP Configuration.......................................................................................................................... 877
Configuration Task List............................................................................................................... 877
Setting VRRP Initialization Delay................................................................................................ 885
Sample Configurations.....................................................................................................................886
VRRP for an IPv4 Configuration.................................................................................................886
VRRP in a VRF Configuration...................................................................................................... 891
55 Z-Series Debugging and Diagnostics............................................................897
Offline Diagnostics........................................................................................................................... 897
Important Points to Remember................................................................................................. 897
Running Offline Diagnostics...................................................................................................... 898
TRACE Logs...................................................................................................................................... 902
Auto Save on Crash or Rollover................................................................................................. 902
Last Restart Reason.......................................................................................................................... 902
Line Card Restart Causes and Reasons......................................................................................902
Hardware Watchdog Timer..............................................................................................................902
show hardware Commands.............................................................................................................903
Environmental Monitoring............................................................................................................... 905
Example of the show interfaces transceiver Command...........................................................905
Recognize an Over-Temperature Condition............................................................................ 905
Troubleshoot an Over-Temperature Condition....................................................................... 906
Recognize an Under-Voltage Condition...................................................................................906
Troubleshoot an Under-Voltage Condition.............................................................................. 906
Buffer Tuning.................................................................................................................................... 907
Buffer Tuning Points...................................................................................................................909
Decide to Tune Buffers...............................................................................................................909
Using the Buffer Tuning Commands.........................................................................................909
Sample Buffer Profile Configuration...........................................................................................912
Troubleshooting Packet Loss........................................................................................................... 912
Displaying Drop Counters...........................................................................................................913
Displaying Dataplane Statistics................................................................................................... 913
Displaying Stack Member Counters........................................................................................... 915
Enabling Application Core Dumps................................................................................................... 915