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D-Link DXS-3250E Installation Guide - Page 193

Defining Tail Dropping, D-Link DXS-3250/DXS-3227P/DXS-3227 User Guide, Tail Drop

UPC - 790069308420

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D-Link DXS-3250/DXS-3227P/DXS-3227 User Guide Defining Tail Dropping The Tail Drop Page permits network managers to set the device to drop packets which exceed the threshold size. Tail Drop is configured per queue. • Click Advance Setup > Quality of Service > Policy Properties > Tail Drop. The Tail Drop Page opens. Figure 119: Tail Drop Page The Tail Drop Page contains the following field: • Interface - Defines the Tail Drop policy applied to the interface. The possible field values are: - Tail Drop - Applies the Tail Drop policy to the interface. All packets exceeding their limit will be dropped. - Default - Maintains the device defaults. Page 191

Section	Page
Preface	6
Section 1. Device Description	10
Viewing the Device	11
DXS-3250 Front Panel	11
DXS-3227 Front Panel	11
Back Panels	12
Ports Description	13
1000Base-T Gigabit Ethernet Ports	13
100Base-FX Fiber Ports	13
SFP Port	13
Stacking Ports	14
RS-232 Console Port	14
Cable Specifications	15
LED Defiitions	16
Port LEDs	16
System LEDs	18
Cable, Port, and Pinout Information	20
Pin Connections for the 10/100/1000 Ethernet Interface	20
Physical Dimensions	21
Section 2. Mounting Device	22
Preparing for Installation	23
Installation Precautions	23
Site Requirements	23
Unpacking	24
Installing the Device	25
Desktop or Shelf Installation	25
Rack Installation	25
Connecting the Device	28
Connecting the Switch to a Terminal	28
AC Power Connection	28
Section 3. Initial Configuration	29
General Configuration Information	29
Auto-Negotiation	29
Device Port Default Settings	30
Booting the Switch	30
Stacking Configuration	32
Configuration Overview	33
Initial Configuration	33
Advanced Configuration	36
Security Management and Password Configuration	37
Software Download and Reboot	39
Startup Menu Functions	41
Download Software	42
Erase FLASH File	42
Password Recovery	43
Set Terminal Baud Rate	43
Stack Menu	43
Section 4. Getting Started	45
Starting the D-Link Embedded Web Interface	46
Understanding the D-Link Embedded Web Interface	48
Device Representation	49
Using the D-Link Embedded Web Interface Management Buttons	50
Using Screen and Table Options	51
Adding Configuration Information	51
Modifying Configuration Information	51
Deleting Configuration Information	52
Resetting the Device	53
Logging Off from the Device	54
Section 5. Managing Stacking	55
Understanding the Stack Topology	56
Stacking Chain Topology	56
Stacking Members and Unit ID	56
Removing and Replacing Stacking Members	57
Exchanging Stacking Members	58
Switching the Stacking Master	58
Configuring Stacking	59
Section 6. Managing Device Information	60
Defining the System Description	61
Defining Advanced System Settings	62
Section 7. Managing Power over Ethernet Devices	63
Defining PoE System Information	64
Defining PoE Interfaces	66
Section 8. Configuring Device Security	69
Configuring Management Security	70
Configuring Authentication Methods	70
Configuring Passwords	88
Configuring Network Security	93
Network Security Overview	93
Defining Network Authentication Properties	95
Defining Port Authentication	97
Configuring Traffic Control	105
Section 9. Configuring Ports	111
Viewing Port Properties	114
Section 10. Aggregating Ports	116
Aggregating Ports	117
Configuring LACP	119
Section 11. Configuring VLANs	121
Defining VLAN Properties	122
Defining VLAN Membership	124
Defining VLAN Interface Settings	125
Configuring GARP	127
Defining GARP	127
Defining GVRP	129
Defining VLAN Groups	131
Section 12. Configuring IP Information	135
Configuring IP Interfaces	135
Defining IP Addresses	136
Defining Default Gateways	138
Configuring DHCP	139
Configuring ARP	141
Configuring Domain Name Servers	143
Defining DNS Servers	144
Defining DNS Host Mapping	146
Configuring Routing	148
Section 13. Defining the Forwarding Database	150
Defining Static Forwarding Database Entries	151
Defining Dynamic Forwarding Database Entries	153
Section 14. Configuring Spanning Tree	155
Defining Classic Spanning Tree	156
Defining STP on Interfaces	158
Defining Rapid Spanning Tree	160
Defining Multiple Spanning Tree	163
Defining MSTP Instance Settings	164
Defining MSTP Interface Settings	166
Section 15. Configuring Multicast Forwarding	169
Defining IGMP Snooping	170
Defining Multicast Bridging Groups	172
Defining Multicast Forward All Settings	174
Section 16. Managing System Files	176
File Management Overview	177
Downloading System Files	178
Firmware Download	178
Configuration Download	178
.Uploading System Files	179
Upload Type	179
Software Image Upload	179
Configuration Upload	179
Activating Image Files	180
Copying Files	181
Managing System Files	182
Section 17. Configuring Quality of Service	183
Quality of Service Overview	184
VPT Classification Information	184
CoS Services	184
Defining General QoS Settings	184
Configuring QoS General Settings	184
Restoring Factory Default QoS Interface Settings	186
Configure Bandwidth Settings	186
Defining Queues	188
Configuring QoS Mapping	189
Mapping CoS Values to Queues	189
Mapping DSCP Values to Queues	190
Configuring Advanced QoS Settings	191
Defining Policy Properties	191
Defining Tail Dropping	193
Defining Policy Profiles	198
Section 18. Configuring SNMP	201
SNMP v1 and v2c	201
SNMP v3	201
Configuring SNMP Security	202
Defining SNMP Security	202
Defining SNMP Views	204
Defining SNMP Group Profiles	206
Defining SNMP Group Members	209
Defining SNMP Communities	212
Configuring SNMP Notifications	215
Defining SNMP Notification Global Parameters	216
Defining SNMP Notification Filters	217
Defining SNMP Notification Recipients	219
Section 19. Configuring System Time	223
Configuring Daylight Savings Time	224
Configuring SNTP	228
Polling for Unicast Time Information	228
Polling for Anycast Time Information	228
Broadcast Time Information	228
Defining SNTP Global Settings	230
Defining SNTP Authentication	232
Defining SNTP Servers	234
Defining SNTP Interface Settings	236
Section 20. Managing System Logs	238
Enabling System Logs	239
Viewing the Device Memory Logs	241
Clearing Device Memory Logs	241
Viewing the FLASH Logs	242
Clearing FLASH Logs	242
Defining Servers Log Parameters	243
Section 21. Managing Device Diagnostics	245
Configuring Port Mirroring	246
Viewing Integrated Cable Tests	248
Viewing Optical Transceivers	249
Viewing the CPU Utilization	250
Section 22. Viewing Statistics	251
Viewing Interface Statistics	251
Viewing Device Interface Statistics	252
Resetting Interface Statistics Counters	253
Viewing Etherlike Statistics	253
Resetting Etherlike Statistics Counters	254
Viewing GVRP Statistics	255
Resetting GVRP Statistics Counters	256
Viewing EAP Statistics	257
Managing RMON Statistics	259
Viewing RMON Statistics	260
Resetting RMON Statistics Counters	261
Configuring RMON History	262
Defining RMON Alarms	269
Warranty	280
Warranty	280
Product Registration	283
Contacting Technical Support	284