Filter
Top Products
Table of Contents
About This Guide .................................................................................................................................. 1
Overview of this User’s Guide ............................................................................................................. 1
Introduction.......................................................................................................................................... 2
Features ............................................................................................................................................. 2
Ports ................................................................................................................................................ 2
Performance Features......................................................................................................................... 2
Management .................................................................................................................................... 3
Unpacking and Setup............................................................................................................................ 5
Unpacking .......................................................................................................................................... 5
Installation ......................................................................................................................................... 5
Desktop or Shelf Installation ............................................................................................................ 5
Rack Installation.............................................................................................................................. 6
Power on............................................................................................................................................. 7
Power Failure ................................................................................................................................... 7
Identifying External Components .......................................................................................................... 8
Front Panel......................................................................................................................................... 8
Rear Panel .......................................................................................................................................... 8
Side Panels......................................................................................................................................... 9
Optional 100BASE and 1000BASE Extension Modules....................................................................... 9
LED Indicators ................................................................................................................................. 13
Connecting The Switch........................................................................................................................ 14
Switch to End Node .......................................................................................................................... 14
Switch to Hub or Switch ................................................................................................................... 14
Switch Management and Operating Concepts ..................................................................................... 16
Local Console Management .............................................................................................................. 16
Diagnostic (console) port (RS-232 DCE)..........................................................................................16
IP Addresses and SNMP Community Names ..................................................................................... 17
Traps................................................................................................................................................ 18
MIBs................................................................................................................................................. 19
SNMP ............................................................................................................................................... 19
Authentication ............................................................................................................................... 19
Packet Forwarding............................................................................................................................ 20
MAC Address Aging Time ............................................................................................................... 20
Filtering............................................................................................................................................ 20
Spanning Tree Protocol..................................................................................................................... 21
STP Operation Levels ..................................................................................................................... 21
Bridge Protocol Data Units ............................................................................................................. 22
Creating a Stable STP Topology ...................................................................................................... 23
STP Port States .............................................................................................................................. 23
User-Changeable STP Parameters ..................................................................................................25
Illustration of STP .......................................................................................................................... 25
VLANs .............................................................................................................................................. 27
Notes About VLANs on the DES-3226 ............................................................................................ 27
IEEE 802.1Q VLANs....................................................................................................................... 27
802.1Q VLAN Packet Forwarding ...................................................................................................28
802.1Q VLAN Tags ......................................................................................................................... 29
Port VLAN ID.................................................................................................................................. 30
vii