User`s guide

AT-S25 Version 1.4 User’s Guide
5
Chapter 6
Displaying Ethernet Statistics ..................................................................................................................................................................113
Displaying Statistics for Received Frames ................................................................................................................................................114
Displaying Statistics for Transmitted Frames ..........................................................................................................................................118
Displaying RMON Statistics for a Switch ...................................................................................................................................................120
Displaying RMON Statistics for a Port ........................................................................................................................................................121
Resetting the Statistics Counters ................................................................................................................................................................122
Interpreting the Graphs ..................................................................................................................................................................................123
Chapter 7
Configuring the Omega Interface ...........................................................................................................................................................125
Creating an Omega Password ......................................................................................................................................................................126
Specifying a Timeout Value ...........................................................................................................................................................................128
Enabling and Disabling the Access Methods ..........................................................................................................................................129
Chapter 8
Upgrading Switch Software and Configuration Files ...................................................................................................................131
Upgrading the Stack Software .....................................................................................................................................................................132
Using XModem to Upgrade the Stack Software ............................................................................................................................133
Using TFTP to Upgrade Software.........................................................................................................................................................134
Using Omega to Upgrade Additional Stacks ..........................................................................................................................................135
Downloading Software to One Stack.................................................................................................................................................135
Downloading Software to All Switches.............................................................................................................................................136
Uploading and Downloading System Configuration Files ................................................................................................................137
Appendix A
Introduction to Virtual LANs .....................................................................................................................................................................139
Port-based VLAN ...............................................................................................................................................................................................141
Parts of a Port-based VLAN....................................................................................................................................................................141
General Rules to Creating a Port-based VLAN................................................................................................................................143
Port-based VLAN Example.....................................................................................................................................................................144
Drawbacks to Port-based VLANs.........................................................................................................................................................146
Tagged VLAN ......................................................................................................................................................................................................147
Parts of a Tagged VLAN...........................................................................................................................................................................148
General Rules to Creating a Tagged VLAN.......................................................................................................................................149
Tagged VLAN Example............................................................................................................................................................................150
Basic VLAN Mode ..............................................................................................................................................................................................152
Appendix B
AT-S25 Default Settings ..............................................................................................................................................................................153
Appendix C
Spanning Tree Protocol Concepts ..........................................................................................................................................................155
Spanning Tree Protocol Features ................................................................................................................................................................156
Spanning Tree Protocol Parameters ..........................................................................................................................................................157
Spanning Tree Protocol Operation .............................................................................................................................................................158
Communication Between Bridges......................................................................................................................................................158
Selecting a Root Bridge and Designated Bridges..........................................................................................................................158
Selecting Designated Ports....................................................................................................................................................................158
Handling Duplicate Paths.......................................................................................................................................................................158
Remapping Network Topology............................................................................................................................................................158
Appendix D
Supported Platforms ....................................................................................................................................................................................159
Index .....................................................................................................................................................................................................................161