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DES-2108/E
Инструкция по эксплуатации Страница: 146

D-Link DES-2108/E [146/199] Spanning tree

24-port NWay Ethernet Switch User’s Guide

132 Web-Based Network Management

Spanning Tree

The Switch supports 801.2d Spanning Tree Protocol, which allows

you to create alternative paths (with multiple switches or other

types of bridges) in your network. See the Spanning Tree Algorithm

section of the ‘‘Switch Management’’ chapter for a detailed

explanation.

STP Parameter

The information above is described as follows:

♦ Spanning Tree Protocol Status Displays the current

Spanning Tree Protocol setting.

♦ Time Since Last Topology Change Displays the last time

changes were made to the network topology. These changes

usually occur when backup paths are activated due to primary

path failures.

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Limitation of liability 3
Warranties exclusive 3
Hardware 5
Limited warranty 5
Software 5
D link offices for registration and warranty service 6
Ce mark warning 7
Copyright statement 7
Fcc warning 7
Trademarks 7
Vcci warning 7
Bsmi warning 8
Able of 9
Ontents 9
Overview of this user s guide 13
Fast ethernet technology 15
Ntroduction 15
Gigabit ethernet technology 16
Switching technology 17
Features 18
Performance features 19
Management 20
Npacking and 21
Unpacking 21
Desktop or shelf installation 22
Installation 22
Figure 2 1 installing rubber feet for desktop installation 23
Figure 2 2a attaching the mounting brackets to the figure 2 2a attaching the mounting brackets to the s witch 23
Rack installation 23
The des 3225g can be mounted in an eia standard size d 19 inch rack which can be placed in a wiring closet with other equipment to install attach the mounting brackets on the switch s side pane ls one on each side and secure them with the screws provided 23
Then use the screws provided with the equipment rack to mount the s witch o n the rack 23
Power on 24
Power failure 25
Dentifying 26
Front panel 26
Omponents 26
Xternal 26
Rear panel 27
Side panels 28
Base fx fiber module 29
Base tx module 29
Optional plug in modules 29
Base fx fiber mtrj type module 30
Connects to 100base fx devices at full or half duplex 30
Figure 3 5 100base fx two port module 30
Figure 3 7 100 base fx one port module 30
Front panel module 30
Meters in half duplex or 2 km in full duplex mode 30
Supports multi mode fiber optic cable connections of up to 4 12 30
Supports multi mode fiber optic cable connections of up to 412 30
Amber during the power on self test post it will light green approximately 2 seconds after the switch is powered on to indicate the ready state of the device the led will blink green while downloading new software for the switch or if 31
Base sx gigabit module 31
Connects to 1000base sx devices at full duplex only 31
Extends network diameter from 260 meters to 550 meters depending on the type of fiber optic cable used 31
Figure 3 10 the led indicators figure 3 10 the led indicators 31
Figure 3 6 1000base sx gigabit one port module 31
Led indicators 31
Power this indicator on the front panel should be colored 31
Rear panel module 31
The led indicators of the switch include power console slot giga speed and link act the following shows the led indicators for the switch along with an explanation of each indicator 31
Onnecting 33
Switch to end node 33
Switch to hub or switch 34
A 100base tx hub or switch can be connected to the switch via a two pair category 5 utp stp straight cable 35
Figure 4 2 switch connected to a 10base t or 100base tx hub figure 4 2 switch connected to a 10base t or 100base tx hub or switch 35
Figure 4 3 switch connected to a normal non uplink port on a hub 35
If the other device does not have an unused uplink port make the connection with a normal straight through cable from one of the uplink ports on the switch to any normal crossed port on the hub alternatively i f you have a crossover cable you can save the uplink ports for other connections and make this one from a crossed port to another crossed port 35
If the other switch or hub contains an unused uplink port we suggest connecting the other device s uplink mdi ii port to any of the switch s mdi x ports 1x 22x or one of the 100base tx module ports using a normal straight through cable as shown below 35
Or switch using a straight or crossover cable 35
Base t device 36
Base tx device 36
Anagement 37
Local console management 37
Diagnostic console port rs 232 dce 38
Ip addresses and snmp community names 38
Aging time 42
Packet forwarding 42
Filtering database 43
A vlan vlan 2 for example destined for a device on another vlan vlan 3 will be filtered 44
Automatic topology re configuration when the path for which there is a backup path fails the backup path will be automatically activated and sta will automatically re configure the network topology 44
Filtering done for vlan integrity packets from a member of 44
Network loop detection and prevention with sta there will be only one path between any two lans if there is more than one path forwarded packets will loop indefinitely sta detects any looped path and selects the path with the lowest path cost as the active path while blocking the other path and using it as the backup path 44
Spanning tree algorithm 44
Sta operates on two levels the bridge level and the port level on the bridge level sta calculates the bridge identifier for each 44
Sta operation levels 44
The spanning tree algorithm sta in the switch allows you to create alternative paths with multiple switches or other types of bridges in your network these backup paths are idle until the switch determines that a problem has developed in the primary paths when a primary path is lost the switch providing the alternative path will automatically go into service with no operator intervention this automatic network reconfiguration provides maximum uptime to network users the concept of the spanning tree algorithm is a complicated and complex subject and must be fully researched and understood please read the following before making any changes 44
On the bridge level 45
On the port level 46
User changeable sta parameters 46
Illustration of sta 47
Figure 5 2 after applying the sta rules 49
Table 5 1 user selective sta parameters 49
Port trunking 50
Mac based vlans 53
Port based vlans 53
Vlan segmentation 54
In the above example there are three different vlans and each port can transmit packets on one of them according to their port vlan id pvid however a port can receive packets on all vlans vid that it belongs to the assignments are as follows 55
Network resources such as printers and servers however can be shared across vlans this is achieved by setting up overlapping vlans as shown in the diagram below 55
Port pvid 55
Sharing resources across vlans 55
Through this selective forwarding feature based on vlan criteria is how vlans segment networks the key point being that port 1 will only transmit on vlan 2 because it s port vlan id number is 2 pvid 2 55
Transmit on vlan 55
Vlans spanning multiple switches 56
Connecting to the switch 60
Nterface 60
Onsole 60
Sing the 60
Console usage conventions 61
First time connecting to the switch 62
Note the passwords used to access the switch are case sensitive therefore s is not the same as s 62
Figure 6 1 initial screen first time connecting to the switch 63
Note there is no initial username or password leave the username and password fields blank 63
Press enter you will see the main menu shown below 63
User accounts management 64
Administrator and normal user privileges 65
Save changes 66
Create modify user accounts 67
Login on the switch console by registered users 67
View delete user accounts 69
Configuration 70
Setting up the switch 70
Configure ip address 71
Configure console 73
Configure switch 74
Syscontac 75
System syslocatio 75
System sysnam 75
Advance settings 76
Configure ports 77
Configure slot1 module 79
Configure slot2 module 81
Configure port mirroring 83
Configure spanning tree protocol 84
Stp parameter settings 85
Stp port control 89
Configure filtering and forwarding table 90
Configure permanent address table entry 92
Configure mac address filtering 93
Configure permanent multicast filtering 94
Configure igmp filtering 95
Configure vlan 96
Configure mac based vlan 97
Configure 802 q vlan 101
Configure trunk 105
Update firmware and configuration files 106
System utilities 107
Ping test 108
Upload configuration file 109
Upload switch history file 110
Community strings and trap stations 111
Network monitoring 113
Switch monitoring 113
Traffic statistics 114
Statistics overview 115
Port traffic statistics 117
Port packet error statistics 118
Port packet analysis statistics 120
Browse address table 122
Browse igmp status 123
Switch history 125
Resetting the switch 126
Factory reset 127
Restart system 127
Logout 128
Anagement 129
Etwork 129
Introduction 129
Getting started 130
Management 130
Configure switch 131
Ip settings 132
Port settings 133
Port mirroring 135
Switch settings 136
Advanced 138
Configure 139
Filtering and forwarding table 139
Permanent address table 140
Permanent multicast filtering 142
Multicast forwarding table 144
Spanning tree 146
Stp parameter 146
Stp parameter port settings 148
Igmp filtering 150
Igmp settings 150
Click the icon on the far right to access the add delete igmp entry window 151
Configure 802 q igmp 151
Configure vlan mode 153
Click the pointer icon on the right hand side to access the add delete mac based vlan window 154
Configure mac based vlan 154
Configure 802 q vlan 156
Use this window to assign a default vlan id for each desired port click apply to let the settings take effect 156
Use this window to enable or disable the ingress filtering check for each desired port click apply to let the settings take effect 157
Configure management 159
Traps and community strings 160
User accounts 161
Console port settings 163
Monitor 164
Switch overview 165
Port statistics 166
Traffic 166
Errors 168
Packet analysis 170
Utilization 172
Browse address table 173
The switch allows you to display a table containing mac addresses ports and respective learned statuses clicking the next page hyperlink at the bottom of the screen will allow you to display the complete mac address table 173
Browse igmp status 174
Switch history 175
Reboot switch 176
Reset and update 176
Doing a remote reset is equivalent to turning the switch off and on again all parameters are returned to the values stored in eeprom click the reset to factory default to reset the switch 177
Reset to factory default 177
Update firmware 178
Change configuration file 179
Upload configuration file 180
Upload log file 181
Save changes 182
Echnical 183
General 183
Pecifications 183
General 184
Physical and environmental 184
Performance 185
Physical and environmental 185
Pecification 186
Contact media direct interface 187
Figure b 2 straight cable for switch uplink mdi ii port to figure b 2 straight cable for switch uplink mdi ii port to switch hub or other devices connection 187
Figure b 3 crossover cable for switch mdi x port to figure b 3 crossover cable for switch mdi x port to switch hub or other network devices mdi x port connection 187
Rj 45 connector pin assignment 187
Signal 187
Table b 1 the standard category 3 cable rj 45 pin assignment 187
The following shows straight cable and crossover cable connection 187
Commands 188
Onfiguration 188
Code_type ip_addr subnet_mas 189
Default_gatewa 189
E 3225 3225prom tf 189
Ip_add 189
Notes about the configuration file 189
Subnet_mas 189
Efault 191
Ettings 191
Oftware 191
Untime 191
Will do the index once the body of the manual is complete 193
Australia d link australasia 194
Canada d link canada 194
Chile d link south america 194
China d link china 194
Denmark d link denmark 194
Egypt d link middle east 194
France d link france 194
Germany d link germany 194
India d link india 194
Italy d link italy 194
Japan d link japan 194
Offices 194
Singapore d link international 194
Sweden d link sweden 194
Taiwan d link taiwan 194
U k d link europe 194
Answers to the following questions help us to support your product 195
How many employees work at installation site 195
Print type or use block letters 195
Product model product serial no product installed in type of computer e g compaq 486 product installed in computer serial no 195
Product was purchased from 195
Registration card 195
U s a d link u s a 195
What applications are used on your network 195
What category best describes your company 195
What network management program does your organization use 195
What network medium media does your organization use 195
What network operating system s does your organization use 195
What network protocol s does your organization use 195
Where and how will the product primarily be used 195
Would you recommend your d link product to a friend 195
Your comments on this product 195
Base fx fiber module 198
Base tx module 198
Figure 3 7 100 base fx fiber one port module 198
Figure 3 8 100 base tx two port module 198
With the optional gigabit slide in module 198

D-Link DES-2108/E [146/199] Spanning tree

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