Users Guide

Troubleshooting SSH............................................................................................................................................... 195
Telnet............................................................................................................................................................................... 196
VTY Line and Access-Class Conguration..................................................................................................................196
VTY Line Local Authentication and Authorization................................................................................................196
VTY Line Remote Authentication and Authorization............................................................................................197
VTY MAC-SA Filter Support................................................................................................................................... 197
18 Simple Network Management Protocol (SNMP).......................................................................................199
Supported Modes...........................................................................................................................................................199
Implementation Information.......................................................................................................................................... 199
Conguring the Simple Network Management Protocol.......................................................................................... 199
Important Points to Remember............................................................................................................................. 200
Setting up SNMP.................................................................................................................................................... 200
Creating a Community............................................................................................................................................ 200
Setting Up User-Based Security (SNMPv3)............................................................................................................. 200
Subscribing to Managed Object Value Updates using SNMP.................................................................................. 201
Enabling a Subset of SNMP Traps.............................................................................................................................. 202
Reading Managed Object Values.................................................................................................................................204
Displaying the Ports in a VLAN using SNMP............................................................................................................. 205
Fetching Dynamic MAC Entries using SNMP............................................................................................................206
Deriving Interface Indices..............................................................................................................................................207
Monitor Port-Channels................................................................................................................................................. 208
Entity MIBS.................................................................................................................................................................... 209
Example of Sample Entity MIBS outputs............................................................................................................. 209
SNMP Traps for Link Status......................................................................................................................................... 210
Standard VLAN MIB....................................................................................................................................................... 211
Enhancements...........................................................................................................................................................211
Fetching the Switchport Conguration and the Logical Interface Conguration ............................................ 211
MIB Support to Display the Available Memory Size on Flash................................................................................... 212
Viewing the Available Flash Memory Size............................................................................................................. 212
MIB Support to Display the Software Core Files Generated by the System.......................................................... 212
Viewing the Software Core Files Generated by the System...............................................................................213
19 Stacking....................................................................................................................................................214
Supported Modes...........................................................................................................................................................214
Stacking Aggregators.....................................................................................................................................................214
Stack Management Roles....................................................................................................................................... 215
Stack Master Election..............................................................................................................................................216
Failover Roles............................................................................................................................................................ 216
MAC Addressing....................................................................................................................................................... 217
Stacking LAG.............................................................................................................................................................217
Stacking VLANs........................................................................................................................................................217
Stacking Port Numbers................................................................................................................................................. 218
Stacking in PMUX Mode...............................................................................................................................................218
Conguring a Switch Stack...........................................................................................................................................219
Stacking Prerequisites..............................................................................................................................................219
Master Selection Criteria.........................................................................................................................................219
Contents
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