Users Guide

Troubleshooting SSH................................................................................................................................................ 186
Telnet..............................................................................................................................................................................186
VTY Line and Access-Class Conguration...................................................................................................................... 186
VTY Line Local Authentication and Authorization......................................................................................................187
VTY Line Remote Authentication and Authorization..................................................................................................187
VTY MAC-SA Filter Support..................................................................................................................................... 188
17 Simple Network Management Protocol (SNMP)........................................................ 189
Supported Modes...........................................................................................................................................................189
Implementation Information............................................................................................................................................ 189
Conguring the Simple Network Management Protocol................................................................................................. 189
Important Points to Remember.................................................................................................................................189
Setting up SNMP......................................................................................................................................................189
Creating a Community.............................................................................................................................................. 189
Setting Up User-Based Security (SNMPv3)...................................................................................................................190
Subscribing to Managed Object Value Updates using SNMP...........................................................................................191
Enabling a Subset of SNMP Traps.................................................................................................................................. 192
Reading Managed Object Values.....................................................................................................................................194
Displaying the Ports in a VLAN using SNMP...................................................................................................................194
Fetching Dynamic MAC Entries using SNMP..................................................................................................................196
Deriving Interface Indices................................................................................................................................................197
Monitor Port-Channels................................................................................................................................................... 198
Entity MIBS.................................................................................................................................................................... 199
Example of Sample Entity MIBS outputs.................................................................................................................. 199
SNMP Traps for Link Status...........................................................................................................................................200
Standard VLAN MIB....................................................................................................................................................... 201
Enhancements..........................................................................................................................................................201
Fetching the Switchport Conguration and the Logical Interface Conguration ...................................................... 201
MIB Support to Display the Available Memory Size on Flash.......................................................................................... 202
Viewing the Available Flash Memory Size.................................................................................................................202
MIB Support to Display the Software Core Files Generated by the System................................................................... 202
Viewing the Software Core Files Generated by the System..................................................................................... 203
18 Stacking.................................................................................................................... 204
Supported Modes.......................................................................................................................................................... 204
Stacking Aggregators.....................................................................................................................................................204
Stack Management Roles........................................................................................................................................ 205
Stack Master Election..............................................................................................................................................206
Failover Roles...........................................................................................................................................................206
MAC Addressing...................................................................................................................................................... 206
Stacking LAG........................................................................................................................................................... 207
Stacking VLANs....................................................................................................................................................... 207
Stacking Port Numbers..................................................................................................................................................208
Stacking in PMUX Mode................................................................................................................................................209
Conguring a Switch Stack............................................................................................................................................209
Stacking Prerequisites..............................................................................................................................................209
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