DES-3326S
Wichtige Sicherheitshinweise
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Warranties Exclusive
Hardware
Software
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Link Offices for Registration and Warranty Service
Trademarks
Copyright Statement
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
Ieee 802.1Q VLANs
802.1Q Vlan Packet Forwarding
Some relevant terms
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
Layer 3-Based VLANs
IP Addressing and Subnetting
Definitions
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
Multicasting
Multicast Groups
110
Address Assignment
111
Internet Group Management Protocol Igmp
112
Igmp Versions 1
113
14. Igmp Type Codes
114
Multicast Routing Algorithms
115
Flooding
Multicast Spanning Trees
116
Reverse Path Broadcasting RPB
117
Reverse Path Multicasting RPM
118
Multicast Routing Protocols
Distance Vector Multicast Routing Protocol Dvmrp
119
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
Ospf Cost
Shortest Path Tree
129
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
Adjacencies on Point-to-Point Interfaces
Ospf Packet Formats
140
Ospf Packet Header
Field Description
141
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
Before You Start
General Deployment Strategy
168
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
Configuring the Switch
User Accounts Management
172
User Accounts Control Table
173
Admin and User Privileges
174
Configuration Mana Gement Admin User
Saving Changes
175
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
IP Address Configuring the Switch’s IP Address
To set the switch’s IP address
187
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
Snmp Settings
To setup the switch for remote management
192
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
Config stacking mode slave
Config stacking mode master
201
Configure Ports
202
22. Port Configurations − Edit
203
Locking a Port’s MAC Address Learning
Speed/Duplex Toggle the Speed/Duplex Auto field
204
Serial Port Settings
205
Baud Rate
Data Bits
206
Stop Bits
Auto-Logout
207
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
To setup an new IP interface, click the New button
To edit an existing IP interface, click on the Edit button
217
Interface Name
IP Address
218
Setup the Routing Information Protocol RIP
Switch
Subnet Mask
Active Yes
32. RIP Status
220
TX Mode Disabled
RX Mode
221
MD5 Key Table Configuration
222
Key ID
Key
223
Setup Ospf
224
Ospf Area Setting
Current Route ID AS Border Router
State
225
Default Cost Stub Import
Stub Default Cost
Area ID
Type
Ospf Interface Configuration
Remove
227
Router Priority
Hello Interval
228
Auth Type
Simple
229
Ospf Interface Configuration − Monitor
Key Configuration
Auth Key
Metric
Virtual Interface Configuration
231
Neighbor Router
Status
232
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
Version
Query Interval
241
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
To configure a port for port mirroring
Port Mirroring
251
Source Port
Direction Ingress
252
To configure a forwarding priority for a given MAC address
Priority
253
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
Multicast MAC Address Forwarding
Unit
262
65. Multicast MAC Address Settings
263
None
264
IP Forwarding
265
To add a new static/default route, click the New button
Gateway IP
266
Static ARP
To add a new static ARP entry, click the New button
267
STP Switch Settings
268
72. STP Switch Settings
269
270
STP Port Settings
271
73. STP Port Settings
272
Cost
Priority
273
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
Save Settings To Server
Save History Log to Server
280
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
To configure DNS Relay, click on the DNS Relay link
DNS Relay
284
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
Network Monitoring
Port Utilization
287
87. Port Utilization window
288
Port Error Statistics
Update
289
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
To view the switch’s ARP table, click on the ARP Table link
ARP Table
301
93. ARP Table
302
Ospf Link State Database Table
Area ID Displays the Ospf Area ID
303
Sequence
304
Ospf Neighbor Table
Priorityrouter
305
Ospf Virtual Neighbor Table
Dvmrp Neighbor Address Table
307
Gvrp Status
Learned
Name
Expire
Router Ports
Igmp Snooping Status
309
100. Igmp Snooping Table
310
IP Multicast Forwarding Table
311
Igmp Group Table
Protocol Routing protocol in use
312
Dvmrp Routing Table
Querier IP
313
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
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