Table of Contents
Chapter 9: LightStream Switches
Verifying an ATM Interface Connection Status..................................................................................190
Viewing the Configured Virtual Connections.....................................................................................191
Configuring the LECS ATM Address on a LightStream 1010 Switch...............................................191
Configuring the Advertised LECS Address.........................................................................................191
Viewing the LANE Configuration.......................................................................................................191
Viewing the Installed Modules............................................................................................................192
Configuring the MPC...........................................................................................................................193
Configuring the MPS...........................................................................................................................193
Changing the MPS Variables........................................................................................................193
Monitoring the MPS......................................................................................................................194
Enabling ILMI Autoconfiguration.......................................................................................................194
Configuring LANE on a LightStream 1010.........................................................................................194
Powering on the LightStream 100 ATM Switch.................................................................................195
Configuring the LS100 Switch............................................................................................................195
Recovering a Lost Password................................................................................................................196
Chapter 10: Layer 2 Redundant Links.........................................................................................................199
In Depth...............................................................................................................................................199
Layer 2 Switching Overview...............................................................................................................199
Frames..................................................................................................................................................199
Broadcast and Multicast Frames...................................................................................................200
Unknown Unicasts........................................................................................................................200
Layer 2 Network Loops.......................................................................................................................200
Danger! Data Loops!.....................................................................................................................201
Edsger Dijkstra’s Graph Theory....................................................................................................201
STP Root Bridges..........................................................................................................................202
Bridge Protocol Data Units...........................................................................................................203
Root Bridge Selection...................................................................................................................205
Spanning Tree Convergence Time................................................................................................207
STP Port States..............................................................................................................................208
Per−VLAN Spanning Tree............................................................................................................209
EtherChannel........................................................................................................................................209
Link Failure...................................................................................................................................210
Port Aggregation Protocol.............................................................................................................210
Fast Convergence Components of STP...............................................................................................211
PortFast..........................................................................................................................................211
UplinkFast.....................................................................................................................................211
BackboneFast................................................................................................................................212
Enabling STP on a Set/Clear Command−Based Switch......................................................................212
Enabling STP on a Set/Clear Command−Based Switch for All VLANs............................................213
Disabling STP on a Set/Clear Command−Based Switch.....................................................................213
Disabling STP on a Set/Clear Command−Based Switch by VLAN...................................................213
Viewing the STP Configuration on a Set/Clear Command−Based Switch.........................................213
Configuring STP on an IOS Command−Based Switch.......................................................................214
Disabling STP on an IOS Command−Based Switch...........................................................................214
Viewing the STP Configuration on a Command Line Switch.............................................................215
Configuring the STP Root Switch.......................................................................................................215
Configuring the STP Secondary Root Switch.....................................................................................215
Setting the Root Bridge for More than One VLAN on a Set/Clear Command−Based Switch...........216
Assigning a Port Cost to a Port Using the Set/Clear Command−Based IOS......................................216
Assigning a Port Cost to a Port Using a CLI−Based Switch...............................................................216
ix
To Next Page
Loading...
