Allied Telesis AT-S82, User Manual

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Contents
4
Guidelines for Creating a VLAN .................................................................................................................42
Working with VLANs .........................................................................................................................................43
Creating a VLAN.........................................................................................................................................43
Displaying all VLANs ..................................................................................................................................44
Modifying a VLAN.......................................................................................................................................45
Deleting a VLAN .........................................................................................................................................45
Protected Ports VLAN.......................................................................................................................................46
Chapter 6: Class of Service ..........................................................................................................................49
Class of Service Overview ................................................................................................................................50
Mapping Ports to Egress Queues...............................................................................................................50
Scheduling..................................................................................................................................................51
Mapping Priorities to Queues............................................................................................................................53
Setting Up the Schedule ...................................................................................................................................54
Assigning Priority to Ports.................................................................................................................................55
Chapter 7: Spanning Tree Protocol (STP) ...................................................................................................57
Spanning Tree Overview ..................................................................................................................................58
Bridge Priority and the Root Bridge ............................................................................................................58
Path Costs and Port Costs...................................................................................................................59
Port Priority ..........................................................................................................................................61
Forwarding Delay and Topology Changes...........................................................................................61
Hello Time and Bridge Protocol Data Units (BPDUs) ..........................................................................62
Point-to-Point and Edge Ports..............................................................................................................63
Spanning Tree and VLANs.........................................................................................................................65
Configuring Spanning Tree ...............................................................................................................................67
Configuring STP Port Settings ..........................................................................................................................70