Reference Guide

Offline Diagnostics................................................................................................................................................897
Important Points to Remember...................................................................................................................... 897
Running Offline Diagnostics...........................................................................................................................897
Trace Logs............................................................................................................................................................ 900
Auto Save on Crash or Rollover............................................................................................................................901
Last Restart Reason (S4820T)............................................................................................................................... 901
Hardware Watchdog Timer.................................................................................................................................. 901
Using the Show Hardware Commands.................................................................................................................901
Enabling Environmental Monitoring......................................................................................................................903
Recognize an Overtemperature Condition..................................................................................................... 903
Troubleshoot an Over-temperature Condition............................................................................................... 903
Recognize an Under-Voltage Condition......................................................................................................... 904
Troubleshoot an Under-Voltage Condition.....................................................................................................904
Buffer Tuning........................................................................................................................................................ 905
Deciding to Tune Buffers............................................................................................................................... 906
Using a Pre-Defined Buffer Profile.................................................................................................................908
Sample Buffer Profile Configuration.............................................................................................................. 909
Troubleshooting Packet Loss............................................................................................................................... 909
Displaying Drop Counters...............................................................................................................................910
Dataplane Statistics....................................................................................................................................... 911
Display Stack Port Statistics..........................................................................................................................912
Display Stack Member Counters....................................................................................................................912
Enabling Application Core Dumps........................................................................................................................ 913
Mini Core Dumps.................................................................................................................................................. 913
Enabling TCP Dumps.............................................................................................................................................914
59 Standards Compliance......................................................................................................... 917
IEEE Compliance...................................................................................................................................................917
RFC and I-D Compliance.......................................................................................................................................918
General Internet Protocols.............................................................................................................................918
General IPv4 Protocols...................................................................................................................................919
General IPv6 Protocols...................................................................................................................................920
Border Gateway Protocol (BGP).................................................................................................................... 921
Open Shortest Path First (OSPF).................................................................................................................... 922
Intermediate System to Intermediate System (IS-IS).................................................................................... 922
Routing Information Protocol (RIP)................................................................................................................ 924
Multicast........................................................................................................................................................ 924
Network Management................................................................................................................................... 925
MIB Location........................................................................................................................................................ 931