DES-3326S
 Wichtige Sicherheitshinweise
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 Warranties Exclusive
Hardware
 Software
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 Copyright Statement
Link Offices for Registration and Warranty Service
Trademarks
 FCC Warning
CE Mark Warning
Vcci Warning Bsmi Warning
Viii
 Table of Contents
 Snmp
 Using WEB-BASED Management
 Xii
 Layer 3 Switching
Introduction
 Introduction
 Functions of a Layer 3 Switch
 Features
Performance Features
Layer 2 Features
Ports
 DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
 Layer 3 Switch Features
 Traffic Classification and Prioritization
Management
 Supports Web-based management
 Switch Stacking
Fast Ethernet Technology
 Gigabit Ethernet Technology
 Unpacking and Setup
Unpacking
 Installation
Desktop or Shelf Installation
 Rack Installation
Installing rubber feet for desktop installation
 Power on
2B. Installing the switch on an equipment rack
 Power Failure
 Identifying External Components
Front Panel
 Rear panel view of the Switch
Rear Panel
 Side Panels
Optional Plug-in Modules
 100BASE-FX Fiber Module 2Km/15Km
1000BASE-T Module
 1000BASE-SX Fiber Module
62.5 ∝m
 1000BASE-LX Fiber Module
BASE-LX two-port module
 Gbic Two-Port Module
Stacking Module with Gbic Port
 Gbic Port
Stacking Port
 11. Up to 6 Switches in a Switch Stack
 Switch LED Indicators
Stacking Module LED Indicators
 13. Stacking Module LED Indicators
 Connecting Switch
Switch to End Node
 Switch to Hub or Switch
Switch connected to an End Node
 Switch Stack Connections
 Switch Stack connections between optional stacking Modules
10BASE-T Device
 100BASE-TX Device
 Switch Management Operating Concepts
Local Console Management
 Diagnostic console port RS-232 DCE
 Managing Switch Stacks
 Determining the Switch Stack Order
Switch Stack Order − First
 001122334450
2original Master
 Switch IP Address
Console Boot Screen
 Setting an IP Address
Traps
 Switch Management and Operating Concepts
 Snmp
Snmp performs the following functions
 Authentication
Traps
 DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
 MIBs
Link Change Event This trap is sent
 Packet Forwarding
 Filtering
MAC Address Aging Time
 Some filtering is done automatically by the switch
 Parameter Description Default Value
Spanning Tree
 Variable Description Default Value
 Bridge Protocol Data Units
 Creating a Stable STP Topology
 STP Port States
Port transitions from one state to another as follows
 STP Port State Transitions
 Feature Default Value
User-Changeable STA Parameters
 DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
 Illustration of STP
 Before Applying the STA Rules
 After Applying the STA Rules
 Link Aggregation
 Link Aggregation Group
 Defaultvlan
VLANs
 Some relevant terms
Ieee 802.1Q VLANs
802.1Q Vlan Packet Forwarding
 802.1Q Vlan Tags
Ieee 802.1Q Packet Forwarding
 Ieee 802.1Q Tag
 Port Vlan ID
Adding an Ieee 802.1Q Tag
 Switch Management and Operating Concepts
 Tagging and Untagging
Ingress Filtering
 VLANs in Layer 2 Only Mode
 Definitions
Layer 3-Based VLANs
IP Addressing and Subnetting
 IP Addresses
 255 Binary to Decimal Conversion
 Address Classes
 Subnet Masking
 Calculating the Number of Subnets and Nodes
 Classless InterDomain Routing Cidr
 Class a Subnet Masks
 Setting up IP Interfaces
10. Class B Subnet Masks
 12. Vlan Example Assigned Ports
 Internet Protocols
 Protocol Layering
OSI Seven Layer Network Model
 Protocol Stack
 Layer
 Layer
 TCP/IP
 DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
 Packet Headers
TCP
 10. TCP Packet Header
 Switch Management and Operating Concepts
 Ethernet
100
 12. Ethernet Packet Header
101
 TCP and UDP Well-Known Ports
102
 UDP and Icmp
103
 13. Ethernet Packet Header
104
 Domain Name Resolution
Domain Name System
Mapping Domain Names to Addresses
105
 Dhcp Servers
106
 IP Routing
107
 Packet Fragmentation and Reassembly
108
 ARP
109
 110
Multicasting
Multicast Groups
 Address Assignment
111
 Internet Group Management Protocol Igmp
112
 Igmp Versions 1
113
 14. Igmp Type Codes
114
 Multicast Routing Algorithms
115
 116
Flooding
Multicast Spanning Trees
 Reverse Path Broadcasting RPB
117
 Reverse Path Multicasting RPM
118
 119
Multicast Routing Protocols
Distance Vector Multicast Routing Protocol Dvmrp
 Protocol-Independent Multicast Dense Mode
Routing Protocols
Routing Information Protocol RIP
120
 121
 RIP Version 1 Message Format
122
 17. RIP v.1 Message Format
123
 RIP 1 Message
124
 RIP 1 Route Interpretation
RIP Version 2 Extensions
RIP2 Message Format
125
 Open Shortest Path First Ospf
126
 Link-State Algorithm
127
 Shortest Path Algorithm
128
 129
Ospf Cost
Shortest Path Tree
 19. Constructing a Shortest Path Tree
130
 20. Constructing a Shortest Path Tree
131
 Areas and Border Routers
132
 Link-State Packets
133
 134
 Ospf Authentication
Simple Password Authentication
Message Digest Authentication MD-5
Backbone and Area
 Virtual Links
Areas Not Physically Connected to Area
Partitioning the Backbone
136
 Neighbors
137
 Adjacencies
Designated Router Election
Building Adjacency
138
 139
 140
Adjacencies on Point-to-Point Interfaces
Ospf Packet Formats
 141
Ospf Packet Header
Field Description
 142
 Hello Packet
143
 Hello Packet
144
 BDR
145
 Database Description Packet
146
 18. Database Description Packet
147
 Link-State Request Packet
148
 Link-State Update Packet
149
 Link-State Acknowledgment Packet
150
 Link-State Advertisement Formats
151
 Link State Advertisement Header
152
 Link-State Advertisement Header
153
 154
 Router Links Advertisements
155
 Routers Links Advertisements
156
 FieldDescription
157
 158
 159
 Network Links Advertisements
160
 Network Link Advertisements
161
 Summary Link Advertisements
162
 31. Summary Link Advertisement
163
 Autonomous Systems External Link Advertisements
164
 AS External Link Advertisements
165
 166
 Introduction
167
 168
Before You Start
General Deployment Strategy
 Vlan Layout
169
 Assigning IP Network Addresses and Subnet Masks to VLANs
170
 That opens, click on the Login to DES-3326S Manager button
Getting Started
Management
Defining Static Routes
 172
Configuring the Switch
User Accounts Management
 User Accounts Control Table
173
 Admin and User Privileges
174
 175
Configuration Mana Gement Admin User
Saving Changes
 Save Changes Screen
176
 Factory Reset
177
 Setting Up Web Management
178
 Ipaddress xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy
179
 Saving Configuration Changes
180
 Starting and Stopping the Web-based Manager
181
 Web-based Manager’s User Interface
182
 Areas of the User Interface
183
 Area Function
184
 Setting Up The Switch
Basic Setup
Switch Information
Click the Switch Information link in the Configuration menu
 10. Switch Information Basic Settings
186
 187
IP Address Configuring the Switch’s IP Address
To set the switch’s IP address
 11. Basic Switch Setup
188
 New Switch IP Settings options are
Switch will send out a Bootp
Broadcast request when it is powered
Up. The Bootp protocol allows IP
 Manual
190
 Default Gateway
Vlan Name
Management Station IP Addresses
191
 192
Snmp Settings
To setup the switch for remote management
 Configuring Community Strings
193
 Setting Up Trap Receivers
194
 Stacking Information
195
 15. Switch Stack Display
196
 17. Stacking Information
197
 Show stacking mode/version
198
 19. Console CLI show stack Command
199
 200
 201
Config stacking mode slave
Config stacking mode master
 Configure Ports
202
 22. Port Configurations − Edit
203
 204
Locking a Port’s MAC Address Learning
Speed/Duplex Toggle the Speed/Duplex Auto field
 Serial Port Settings
205
 206
Baud Rate
Data Bits
 207
Stop Bits
Auto-Logout
 Advanced Setup
Configuring VLANs
To create a new 802.1Q Vlan
208
 To create a new 802.1Q VLAN, click the New button
209
 26 .1Q Static VLANs Entry Settings Edit
210
 Port
Tagged/Untagged
Untagged
Egress
 212
 Ingress Filter
213
 To enable or disable GVRP, globally, on the switch
214
 Layer 3 IP Networking
215
 To setup IP Interfaces on the switch
216
 217
To setup an new IP interface, click the New button
To edit an existing IP interface, click on the Edit button
 218
Interface Name
IP Address
 Setup the Routing Information Protocol RIP
Switch
Subnet Mask
Active Yes
 32. RIP Status
220
 221
TX Mode Disabled
RX Mode
 MD5 Key Table Configuration
222
 223
Key ID
Key
 Setup Ospf
224
 Ospf Area Setting
Current Route ID AS Border Router
State
225
 Default Cost Stub Import
Stub Default Cost
Area ID
Type
 227
Ospf Interface Configuration
Remove
 228
Router Priority
Hello Interval
 229
Auth Type
Simple
 Ospf Interface Configuration − Monitor
Key Configuration
Auth Key
Metric
 Virtual Interface Configuration
231
 232
Neighbor Router
Status
 Area Aggregation Configuration
233
 Route Redistribution Settings
234
 Source Protocol
Destination
Protocol
Metric Type
 236
 IP Multicasting
237
 Igmp Snooping Settings
To configure Igmp Snooping
State Disabled
238
 Igmp Interface Configuration
Query
Max Response
Robustness Var
 46. Igmp Interface Setup
240
 241
Version
Query Interval
 Dvmrp Interface Configuration
Max Response
Time
Robustness
 49. Dvmrp Interface Configuration − Edit
243
 Interface
Name System
Probe Interval
244
 PIM-DM Settings
Neighbor Timeout Interval
State Disabled
Metric
 50. PIM-DM Interface Configuration
246
 51. PIM-DM Interface Configuration − Edit
247
 Static Router Port Settings
Join/Prune
Interval
248
 To setup a static router port
249
 53. Static Router Port Settings − Add
250
 251
To configure a port for port mirroring
Port Mirroring
 252
Source Port
Direction Ingress
 253
To configure a forwarding priority for a given MAC address
Priority
 56. MAC Address Priority − Add
254
 MAC Address
User Priority
Source/Destinatio
255
 IP Address Filtering
256
 0.0
257
 258
 Forwarding
259
 Unicast MAC Address Forwarding
260
 63. Unicast MAC Address Settings − Add
261
 262
Multicast MAC Address Forwarding
Unit
 65. Multicast MAC Address Settings
263
 None
264
 IP Forwarding
265
 266
To add a new static/default route, click the New button
Gateway IP
 267
Static ARP
To add a new static ARP entry, click the New button
 STP Switch Settings
268
 72. STP Switch Settings
269
 270
 STP Port Settings
271
 73. STP Port Settings
272
 273
Cost
Priority
 274
 74. Link Aggregation
275
 Following fields can be set
276
 Update Firmware from Server
Utilities
Tftp Utilities
Port Member
 77. Download Firmware from Server
278
 Use Configuration File on Server
279
 280
Save Settings To Server
Save History Log to Server
 Utilities BOOTP/DHCP Relay
281
 Bootp Hops Count Limit
Relay Status
Relay Time Threshold
282
 To add a new entry, click the New button
283
 284
To configure DNS Relay, click on the DNS Relay link
DNS Relay
 285
 To add a new entry to the table, click on the New button
Address The IP address of the domain name
0.0
Above
 287
Network Monitoring
Port Utilization
 87. Port Utilization window
288
 289
Port Error Statistics
Update
 88. Port Error Packet Statistics window
290
 Update Interval
CRC Error
RX Frames
Undersize
 Drop Packets
TX Frames
Excessive Deferral
Late Collision
 Port Packet Analysis
293
 Frames
Frames/sec
Unicast RX
Frames/sec Multicast RX
 MAC Address Table
Total/sec TX Bytes
Total/sec TX Frames
Total/sec
 IP Address Table
296
 297
 91. IP Address Table
298
 Routing Table
 Netmask
300
 301
To view the switch’s ARP table, click on the ARP Table link
ARP Table
 93. ARP Table
302
 303
Ospf Link State Database Table
Area ID Displays the Ospf Area ID
 Sequence
304
 305
Ospf Neighbor Table
Priorityrouter
 Ospf Virtual Neighbor Table
 Dvmrp Neighbor Address Table
307
 Gvrp Status
Learned
Name
Expire
 309
Router Ports
Igmp Snooping Status
 100. Igmp Snooping Table
310
 IP Multicast Forwarding Table
311
 312
Igmp Group Table
Protocol Routing protocol in use
 313
Dvmrp Routing Table
Querier IP
 Switch History
To view the switch history log
Click the Switch History link on the Applications menu
314
 104. Switch History
315
 Technical Specifications
316
 Physical and Environmental
317
 318
EMI
 Understanding Troubleshooting Spanning Tree Protocol
319
 Blocking State
Port in the blocking state does the following
 321
 Listening State
Port in the listening state does the following
 323
 Learning State
Port in the learning state does the following
 325
 Forwarding State
Port in the forwarding state does the following
 327
 Disabled State
Disabled port does the following
 329
 Troubleshooting STP
Spanning Tree Protocol Failure
 Full/Half Duplex Mismatch
331
 Unidirectional Link
 333
 Resource Errors
Packet Corruption
 Know where the root is located
Identifying a Data Loop
Avoiding Trouble
Know which links are redundant
 Minimize the number of ports in the blocking state
 337
 Understanding and Troubleshooting the Spanning Tree Protocol
 Impact of Layer 3 Switching
339
 Understanding and Troubleshooting the Spanning Tree Protocol
 341
 Brief Review Bitwise Logical Operations
 Not
 Index
 Spanning Tree Protocol
 Vlan
 Offices
 Registration Card