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Chapter 6: Port Mirroring ..............................................................................................................................65
Port Mirroring Overview ....................................................................................................................................66
Configuring Port Mirroring.................................................................................................................................67
Disabling Port Mirroring ....................................................................................................................................69
Chapter 7: Virtual LANs .................................................................................................................................71
VLAN Features .................................................................................................................................................72
Increased Performance ..............................................................................................................................72
Improved Manageability .............................................................................................................................72
Increased Security......................................................................................................................................72
Types of VLANs..........................................................................................................................................73
Port-based VLAN Overview ..............................................................................................................................74
VLAN Name................................................................................................................................................74
VLAN Identifier ...........................................................................................................................................74
Untagged Ports...........................................................................................................................................75
Port VLAN Identifier....................................................................................................................................75
Guidelines to Creating a Port-based VLAN ................................................................................................75
Drawbacks of Port-based VLANs ...............................................................................................................76
Port-based Example 1................................................................................................................................77
Port-based Example 2................................................................................................................................78
Tagged VLAN Overview ...................................................................................................................................80
Tagged and Untagged Ports ......................................................................................................................81
Port VLAN Identifier....................................................................................................................................81
Guidelines to Creating a Tagged VLAN .....................................................................................................81
Tagged VLAN Example ..............................................................................................................................82
Creating a VLAN ...............................................................................................................................................84
Configuring the PVID of Untagged Ports ..........................................................................................................87
Displaying the VLANs .......................................................................................................................................89
Modifying a VLAN .............................................................................................................................................91
Deleting a VLAN ...............................................................................................................................................93
Chapter 8: Quality of Service (QoS) .............................................................................................................95
QoS Overview...................................................................................................................................................96
Mapping CoS Priorities to Egress Queues .......................................................................................................99
Configuring CoS..............................................................................................................................................102
Chapter 9: Rapid Spanning Tree Protocol (RSTP) ....................................................................................107
RSTP Overview ..............................................................................................................................................108
Bridge Priority and the Root Bridge ..........................................................................................................108
Designated Bridge and Designated Port............................................................................................109
Path Costs and Port Costs.................................................................................................................109
Port Priority ........................................................................................................................................110
Hello Time and Bridge Protocol Data Units (BPDUs) ........................................................................111
Point-to-Point and Edge Ports............................................................................................................111
Mixed STP and RSTP Networks ..............................................................................................................113
Rapid Spanning Tree and VLANs ............................................................................................................114
Enabling or Disabling RSTP ...........................................................................................................................115
Configuring the RSTP Bridge Settings............................................................................................................118
Configuring STP Compatibility ........................................................................................................................120
Configuring RSTP Port Settings .................................................................................................
....................121
Configuring the Basic RSTP Port Settings ...............................................................................................121
Configuring the Advanced RSTP Port Settings ........................................................................................123
Displaying the RSTP Topology .......................................................................................................................126
Chapter 10: 802.1x Port-based Network Access Control .........................................................................129
802.1x Port-based Network Access Control Overview ...................................................................................130
Authentication Process.............................................................................................................................131