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D-Link DES-3326S

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DES-3326S Layer 3 Fast Ethernet Switch User’s Guide

Understanding and Troubleshooting the Spanning Tree Protocol 341

Table of Contents

Wichtige Sicherheitshinweise2
Limitation of Liability4
Limited Warranty4
Copyright Statement7
Fcc Warning8
Ce Mark Warning8
VCCI Warning8
Table of Contents9
Introduction13
- Layer 3 Switching13
  - The Functions of a Layer 3 Switch15
- Features16
  - Ports16
- Performance Features16
- Switch Stacking21
- Fast Ethernet Technology21
- Gigabit Ethernet Technology22
Unpacking and Setup23
- Unpacking23
- Installation24
  - Desktop or Shelf Installation24
  - Rack Installation25
- Power on26
  - Power Failure27
Identifying External Components28
- Front Panel28
- Rear Panel29
- Side Panels30
- Optional Plug-In Modules30
- Switch LED Indicators37
- Stacking Module LED Indicators37
Connecting the Switch39
- Switch to End Node39
- Switch to Hub or Switch40
- Switch Stack Connections41
  - 10BASE-T Device42
  - 100BASE-TX Device43
Switch Management and Operating Concepts44
- Local Console Management44
  - Diagnostic (Console) Port (RS-232 DCE)45
- Managing Switch Stacks46
- Switch IP Address49
- Traps50
- Snmp52
- Mibs55
- Packet Forwarding56
- Filtering57
- Spanning Tree59
  - Bridge Protocol Data Units61
  - Creating a Stable Stp Topology62
  - Illustration of Stp67
- Link Aggregation70
- Vlans72
  - Q Vlan Packet Forwarding73
  - Tagging and Untagging78
  - Ingress Filtering78
  - Ip Addressing and Subnetting80
- IP Addresses81
  - Address Classes83
  - Subnet Masking84
  - Calculating the Number of Subnets and Nodes85
- Internet Protocols90
- Protocol Layering91
- Packet Headers97
- The Domain Name System105
- DHCP Servers106
- IP Routing107
- Packet Fragmentation and Reassembly108
- Arp109
- Multicasting110
  - Address Assignment111
  - Multicast Routing Algorithms115
  - Multicast Spanning Trees116
- Multicast Routing Protocols119
- Routing Protocols120
  - Rip 1 Message124
  - Ospf Cost129
  - Ospf Authentication135
  - Virtual Links136
  - Designated Router Election138
  - Hello Interval144
- Web-Based Switch Management167
- Introduction167
- Before You Start168
- General Deployment Strategy168
  - VLAN Layout169
  - Assigning IP Network Addresses and Subnet Masks to Vlans170
  - Defining Static Routes171
- Getting Started171
- Management171
- Configuring the Switch172
  - User Accounts Management172
  - Admin and User Privileges174
- Saving Changes175
- Factory Reset177
- Using Web-Based Management178
  - Saving Configuration Changes180
  - Areas of the User Interface183
  - Setting up the Switch185
  - Basic Setup185
  - Switch Information185
  - Snmp Settings192
  - Configuring Community Strings193
  - Setting up Trap Receivers194
  - Stacking Information195
  - Configure Ports202
  - Serial Port Settings205
- Advanced Setup208
- Layer 3 IP Networking215
  - Ospf Interface Configuration227
  - Area Aggregation Configuration233
  - Route Redistribution Settings234
- IP Multicasting237
  - Igmp Snooping Settings238
  - Igmp Interface Configuration239
  - Dvmrp Interface Configuration242
  - Static Router Port Settings248
- Port Mirroring251
- Priority253
- Filtering256
- Forwarding259
  - Unicast Mac Address Forwarding260
  - Multicast Mac Address Forwarding262
  - Static Arp267
- Spanning Tree268
- Link Aggregation274
- Utilities277
- Dns Relay284
- Network Monitoring287
  - Port Error Statistics289
  - Port Packet Analysis293
  - Ip Address Table296
  - Routing Table299
  - Arp Table301
  - Gvrp Status308
  - Router Ports309
  - Ip Multicast Forwarding Table311
  - Igmp Group Table312
  - Dvmrp Routing Table313
  - Switch History314
Technical Specifications316
Physical and Environmental317
Understanding and Troubleshooting the Spanning Tree319
Protocol319
- Blocking State320
- Listening State322
- Learning State324
- Forwarding State326
- Disabled State328
- Troubleshooting STP330
- Spanning Tree Protocol Failure330
- Full/Half Duplex Mismatch331
- Unidirectional Link332
- Packet Corruption334
- Resource Errors334
- Identifying a Data Loop335
- Avoiding Trouble335
Brief Review of Bitwise Logical Operations342
Index344
Registration Card348

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