Dell PowerConnect 8024 User manual

Dell PowerConnect
8024/8024F Switch
User’s Configuration
Guide
Regulatory Models: PC8024 and PC8024F

Notes and Cautions
NOTE: A NOTE indicates important information that helps you make better use of
your computer.
CAUTION: A CAUTION indicates potential damage to hardware or loss of data if
instructions are not followed.
____________
Information in this publication is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc.
is strictly forbidden.
Trademarks used in this text: Dell™, the DELL logo, EqualLogic™, PowerConnect™, and
OpenManage™ are trademarks of Dell Inc. Microsoft®, Windows®, Windows Server®, MS-DOS®,
and Windows Vista®are either trademarks or registered trademarks of Microsoft Corporation in the
United States and/or other countries. sFlow®is a registered trademark of InMon Corporation. Cisco®
is a registered trademark of Cisco Systems. Mozilla®and Firefox®are registered trademarks of the
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Other trademarks and trade names may be used in this publication to refer to either the entities claiming
the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and
trade names other than its own.
Regulatory Models: PC8024 and PC8024F
September 2011 Rev. A02

Contents 3
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 49
About This Document . . . . . . . . . . . . . . . . . . 49
Audience . . . . . . . . . . . . . . . . . . . . . . . . . 49
Document Conventions . . . . . . . . . . . . . . . . . 50
Additional Documentation. . . . . . . . . . . . . . . . 50
2 Switch Features . . . . . . . . . . . . . . . . . . . 51
System Management Features . . . . . . . . . . . . . 52
Multiple Management Options . . . . . . . . . . . 52
System Time Management . . . . . . . . . . . . . 52
Log Messages . . . . . . . . . . . . . . . . . . . 52
Integrated DHCP Server . . . . . . . . . . . . . . 53
Management of Basic Network Information. . . . 53
IPv6 Management Features . . . . . . . . . . . . 53
Dual Software Images . . . . . . . . . . . . . . . 53
File Management . . . . . . . . . . . . . . . . . . 54
Switch Database Management Templates. . . . . 54
Automatic Installation of Firmware and
Configuration . . . . . . . . . . . . . . . . . . . . 54
sFlow . . . . . . . . . . . . . . . . . . . . . . . . 55
SNMP Alarms and Trap Logs . . . . . . . . . . . . 55
CDP Interoperability through ISDP . . . . . . . . . 55
Remote Monitoring (RMON) . . . . . . . . . . . . 55

4Contents
Stacking Features . . . . . . . . . . . . . . . . . . . . 56
High Port Count . . . . . . . . . . . . . . . . . . . 56
Single IP Management . . . . . . . . . . . . . . . 56
Automatic Firmware Upgrade for New
Stack Members . . . . . . . . . . . . . . . . . . . 56
Master Failover with Transparent Transition . . . . 57
Nonstop Forwarding on the Stack . . . . . . . . . 57
Hot Add/Delete and Firmware Synchronization . . 57
Security Features . . . . . . . . . . . . . . . . . . . . 57
Configurable Access and Authentication
Profiles . . . . . . . . . . . . . . . . . . . . . . . 57
Password-Protected Management Access . . . . 58
Strong Password Enforcement . . . . . . . . . . . 58
TACACS+ Client . . . . . . . . . . . . . . . . . . . 58
RADIUS Support . . . . . . . . . . . . . . . . . . 58
SSH/SSL. . . . . . . . . . . . . . . . . . . . . . . 59
Inbound Telnet Control . . . . . . . . . . . . . . . 59
Denial of Service . . . . . . . . . . . . . . . . . . 59
Captive Portal . . . . . . . . . . . . . . . . . . . . 59
Dot1x Authentication (IEEE 802.1X) . . . . . . . . . 60
MAC-Based 802.1X Authentication . . . . . . . . . 60
Dot1x Monitor Mode . . . . . . . . . . . . . . . . 60
MAC-Based Port Security . . . . . . . . . . . . . 60
Access Control Lists (ACL) . . . . . . . . . . . . . 61
Time-Based ACLs . . . . . . . . . . . . . . . . . . 61
IP Source Guard (IPSG). . . . . . . . . . . . . . . 61
DHCP Snooping . . . . . . . . . . . . . . . . . . . 62
Dynamic ARP Inspection . . . . . . . . . . . . . . 62
Protected Ports (Private VLAN Edge). . . . . . . . 62
Switching Features . . . . . . . . . . . . . . . . . . . 63
Flow Control Support (IEEE 802.3x) . . . . . . . . . 63
Head of Line Blocking Prevention . . . . . . . . . 63

Contents 5
Alternate Store and Forward (ASF). . . . . . . . . 63
Jumbo Frames Support . . . . . . . . . . . . . . . 63
Auto-MDI/MDIX Support . . . . . . . . . . . . . . 63
VLAN-Aware MAC-based Switching. . . . . . . . 64
Back Pressure Support . . . . . . . . . . . . . . . 64
Auto Negotiation . . . . . . . . . . . . . . . . . . 64
Broadcast Storm Control . . . . . . . . . . . . . . 64
Port Mirroring. . . . . . . . . . . . . . . . . . . . 65
Static and Dynamic MAC Address Tables . . . . . 65
Link Layer Discovery Protocol (LLDP) . . . . . . . 65
Link Layer Discovery Protocol (LLDP) for
Media Endpoint Devices . . . . . . . . . . . . . . 65
Priority-based Flow Control (PFC) . . . . . . . . . 66
Data Center Bridging (DBC) Exchange Protocol . . 66
Fibre Channel over Ethernet (FCoE)
Initialization Protocol Snooping . . . . . . . . . . 66
Cisco Protocol Filtering. . . . . . . . . . . . . . . 67
DHCP Layer 2 Relay. . . . . . . . . . . . . . . . . 67
Virtual Local Area Network Supported Features . . . . 67
VLAN Support. . . . . . . . . . . . . . . . . . . . 67
Port-Based VLANs . . . . . . . . . . . . . . . . . 67
IP Subnet-based VLAN . . . . . . . . . . . . . . . 68
MAC-based VLAN . . . . . . . . . . . . . . . . . 68
IEEE 802.1v Protocol-Based VLANs . . . . . . . . 68
GARP and GVRP Support . . . . . . . . . . . . . . 68
Voice VLAN . . . . . . . . . . . . . . . . . . . . . 68
Guest VLAN . . . . . . . . . . . . . . . . . . . . . 69
Double VLANs . . . . . . . . . . . . . . . . . . . 69
Spanning Tree Protocol Features . . . . . . . . . . . . 70
Spanning Tree Protocol (STP) . . . . . . . . . . . 70
Spanning Tree Port Settings . . . . . . . . . . . . 70
Rapid Spanning Tree . . . . . . . . . . . . . . . . 70

6Contents
Multiple Spanning Tree . . . . . . . . . . . . . . . 70
Bridge Protocol Data Unit (BPDU) Guard. . . . . . 71
BPDU Filtering . . . . . . . . . . . . . . . . . . . 71
Link Aggregation Features . . . . . . . . . . . . . . . . 71
Link Aggregation . . . . . . . . . . . . . . . . . . 71
Link Aggregate Control Protocol (LACP) . . . . . . 71
Routing Features . . . . . . . . . . . . . . . . . . . . . 72
Address Resolution Protocol (ARP)
Table Management . . . . . . . . . . . . . . . . . 72
VLAN Routing . . . . . . . . . . . . . . . . . . . . 72
IP Configuration . . . . . . . . . . . . . . . . . . . 72
Open Shortest Path First (OSPF) . . . . . . . . . . 72
BOOTP/DHCP Relay Agent . . . . . . . . . . . . . 73
IP Helper and UDP Relay . . . . . . . . . . . . . . 73
Routing Information Protocol . . . . . . . . . . . . 73
Router Discovery . . . . . . . . . . . . . . . . . . 73
Routing Table . . . . . . . . . . . . . . . . . . . . 73
Virtual Router Redundancy Protocol (VRRP) . . . . 74
Tunnel and Loopback Interfaces . . . . . . . . . . 74
IPv6 Routing Features . . . . . . . . . . . . . . . . . . 74
IPv6 Configuration . . . . . . . . . . . . . . . . . 74
IPv6 Routes . . . . . . . . . . . . . . . . . . . . . 75
OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . 75
DHCPv6 . . . . . . . . . . . . . . . . . . . . . . . 75
Quality of Service (QoS) Features . . . . . . . . . . . . 76
Differentiated Services (DiffServ) . . . . . . . . . 76
Class Of Service (CoS) . . . . . . . . . . . . . . . 76
Auto Voice over IP (VoIP) . . . . . . . . . . . . . . 76
Internet Small Computer System Interface
(iSCSI) Optimization . . . . . . . . . . . . . . . . . 77

Contents 7
Layer 2 Multicast Features . . . . . . . . . . . . . . . 77
MAC Multicast Support. . . . . . . . . . . . . . . 77
IGMP Snooping . . . . . . . . . . . . . . . . . . . 77
IGMP Snooping Querier . . . . . . . . . . . . . . 78
MLD Snooping . . . . . . . . . . . . . . . . . . . 78
Multicast VLAN Registration . . . . . . . . . . . . 78
Layer 3 Multicast Features . . . . . . . . . . . . . . . 79
Distance Vector Multicast Routing Protocol . . . . 79
Internet Group Management Protocol . . . . . . . 79
IGMP Proxy . . . . . . . . . . . . . . . . . . . . . 79
Protocol Independent Multicast—Dense
Mode . . . . . . . . . . . . . . . . . . . . . . . . 79
Protocol Independent Multicast—Sparse
Mode . . . . . . . . . . . . . . . . . . . . . . . . 80
Protocol Independent Multicast—Source
Specific Multicast . . . . . . . . . . . . . . . . . 80
Protocol Independent Multicast IPv6 Support . . . 80
MLD/MLDv2 (RFC2710/RFC3810) . . . . . . . . . . 80
3 Hardware Overview. . . . . . . . . . . . . . . . . 81
PowerConnect 8024/8024F Front Panel . . . . . . . . . 81
PowerConnect 8024 Front Panel . . . . . . . . . . 81
PowerConnect 8024F Front Panel . . . . . . . . . 82
Port and System LEDs . . . . . . . . . . . . . . . 83
PowerConnect 8024/8024F Back Panel . . . . . . . . . 83
Console Port . . . . . . . . . . . . . . . . . . . . 83
Out-of-Band Management Port . . . . . . . . . . 84
Power Supplies . . . . . . . . . . . . . . . . . . . 84
Ventilation System . . . . . . . . . . . . . . . . . 84

8Contents
LED Definitions . . . . . . . . . . . . . . . . . . . . . . 85
Port LEDs . . . . . . . . . . . . . . . . . . . . . . 85
System LEDs . . . . . . . . . . . . . . . . . . . . 86
4 Using Dell OpenManage Switch
Administrator . . . . . . . . . . . . . . . . . . . . . 87
About Dell OpenManage Switch Administrator. . . . . 87
Starting the Application . . . . . . . . . . . . . . . . . 88
Understanding the Interface . . . . . . . . . . . . . . . 89
Defining Fields . . . . . . . . . . . . . . . . . . . . . . 91
Understanding the Device View . . . . . . . . . . . . . 92
Using the Device View Port Features. . . . . . . . 92
5 Using the Command-Line Interface . . . . 93
Accessing the Switch Through the CLI . . . . . . . . . 93
Console Connection. . . . . . . . . . . . . . . . . 93
Telnet Connection. . . . . . . . . . . . . . . . . . 94
Understanding Command Modes . . . . . . . . . . . . 95
Entering CLI Commands . . . . . . . . . . . . . . . . . 97
Using the Question Mark to Get Help. . . . . . . . 97
Using Command Completion . . . . . . . . . . . . 98
Entering Abbreviated Commands. . . . . . . . . . 98
Negating Commands . . . . . . . . . . . . . . . . 98
Understanding Error Messages . . . . . . . . . . 99
Recalling Commands from the History
Buffer . . . . . . . . . . . . . . . . . . . . . . . . 99

Contents 9
6 Default Settings. . . . . . . . . . . . . . . . . . . 101
7 Setting the IP Address and Other
Basic Network Information . . . . . . . . . . 105
IP Address and Network Information Overview . . . . 105
What Is the Basic Network Information? . . . . . 105
Why Is Basic Network Information Needed? . . . 106
How Is Basic Network Information
Configured? . . . . . . . . . . . . . . . . . . . . . 107
What Is Out-of-Band Management and
In-Band Management? . . . . . . . . . . . . . . . 107
Default Network Information . . . . . . . . . . . . . . 109
Configuring Basic Network Information (Web) . . . . . 110
Out-of-Band Interface . . . . . . . . . . . . . . . 110
IP Interface Configuration (Default VLAN IP
Address) . . . . . . . . . . . . . . . . . . . . . . 111
Route Entry Configuration (Switch Default
Gateway) . . . . . . . . . . . . . . . . . . . . . . 112
Domain Name Server. . . . . . . . . . . . . . . . 114
Default Domain Name . . . . . . . . . . . . . . . 115
Host Name Mapping . . . . . . . . . . . . . . . . 116
Dynamic Host Name Mapping . . . . . . . . . . . 117
Configuring Basic Network Information (CLI). . . . . . 118
Enabling the DHCP Client on the OOB Port. . . . . 118
Enabling the DHCP Client on the Default
VLAN . . . . . . . . . . . . . . . . . . . . . . . . 118
Managing DHCP Leases . . . . . . . . . . . . . . 119
Configuring Static Network Information on
the OOB Port . . . . . . . . . . . . . . . . . . . . 120
Configuring Static Network Information on
the Default VLAN . . . . . . . . . . . . . . . . . . 120

10 Contents
Configuring and Viewing Additional Network
Information . . . . . . . . . . . . . . . . . . . . 121
Basic Network Information Configuration
Example . . . . . . . . . . . . . . . . . . . . . . . . 122
8 Managing a Switch Stack . . . . . . . . . . . 125
Stacking Overview . . . . . . . . . . . . . . . . . . . 125
Creating a PowerConnect 8024 Stack . . . . . . 126
How is the Management Unit Selected? . . . . . 127
Adding a Switch to the Stack . . . . . . . . . . . 129
Removing a Switch from the Stack . . . . . . . . 129
How is the Firmware Updated on the Stack?. . . 130
What is Stacking Standby? . . . . . . . . . . . . 130
What is Nonstop Forwarding? . . . . . . . . . . 131
Switch Stack MAC Addressing and Stack
Design Considerations . . . . . . . . . . . . . . 134
NSF Network Design Considerations. . . . . . . 134
Why is Stacking Needed? . . . . . . . . . . . . 135
Default Stacking Values . . . . . . . . . . . . . . . . 135
Managing and Monitoring the Stack (Web) . . . . . . 136
Unit Configuration. . . . . . . . . . . . . . . . . 136
Stack Summary . . . . . . . . . . . . . . . . . . 138
Stack Firmware Synchronization . . . . . . . . . 139
Supported Switches . . . . . . . . . . . . . . . 140
Stack Port Summary . . . . . . . . . . . . . . . 141
Stack Port Counters. . . . . . . . . . . . . . . . 142
Stack Port Diagnostics . . . . . . . . . . . . . . 142
NSF Summary . . . . . . . . . . . . . . . . . . . 143
Checkpoint Statistics . . . . . . . . . . . . . . . 144

Contents 11
Managing the Stack (CLI) . . . . . . . . . . . . . . . . 145
Configuring Stack Member, Stack Port, and
NSF Settings . . . . . . . . . . . . . . . . . . . . 145
Viewing and Clearing Stacking and NSF
Information . . . . . . . . . . . . . . . . . . . . . 146
Stacking and NSF Usage Scenarios. . . . . . . . . . . 147
Basic Failover. . . . . . . . . . . . . . . . . . . . 148
Preconfiguring a Stack Member . . . . . . . . . . 150
NSF in the Data Center . . . . . . . . . . . . . . . 152
NSF and VoIP . . . . . . . . . . . . . . . . . . . . 153
NSF and DHCP Snooping . . . . . . . . . . . . . . 154
NSF and the Storage Access Network . . . . . . . 155
NSF and Routed Access . . . . . . . . . . . . . . 157
9 Controlling Management Access . . . . . 159
Management Access Control Overview . . . . . . . . 159
What Are the Recommendations for
Management Security?. . . . . . . . . . . . . . . 161
What Is an Authentication Profile?. . . . . . . . . 161
How Does TACACS+ Control Management
Access?. . . . . . . . . . . . . . . . . . . . . . . 162
How Does RADIUS Control Management
Access?. . . . . . . . . . . . . . . . . . . . . . . 164
What are RADIUS Server Groups? . . . . . . . . . 166
How Does the Switch Determine Which
RADIUS Server to Contact? . . . . . . . . . . . . 166
What Other Features Use Authentication?. . . . . 168
Which RADIUS Attributes Does the Switch
Support? . . . . . . . . . . . . . . . . . . . . . . 168
How Are RADIUS Attributes Processed on
the Switch? . . . . . . . . . . . . . . . . . . . . . 170
Default Management Security Values . . . . . . . . . 171

12 Contents
Controlling Management Access (Web) . . . . . . . 173
Access Profile . . . . . . . . . . . . . . . . . . 173
Authentication Profiles . . . . . . . . . . . . . . 177
Select Authentication. . . . . . . . . . . . . . . 181
Password Management . . . . . . . . . . . . . 182
Last Password Set Result. . . . . . . . . . . . . 184
User Login Configuration . . . . . . . . . . . . . 185
Local User Database . . . . . . . . . . . . . . . 186
Line Password . . . . . . . . . . . . . . . . . . 188
Enable Password . . . . . . . . . . . . . . . . . 188
TACACS+ Settings . . . . . . . . . . . . . . . . 189
RADIUS Global Configuration. . . . . . . . . . . 191
RADIUS Server Configuration . . . . . . . . . . 192
RADIUS Accounting Server Configuration . . . . 195
RADIUS Accounting Server Statistics . . . . . . 197
RADIUS Server Statistics . . . . . . . . . . . . . 198
Authorization Network RADIUS . . . . . . . . . 199
Telnet Server . . . . . . . . . . . . . . . . . . . 200
Denial of Service . . . . . . . . . . . . . . . . . 201
Secure HTTP Configuration. . . . . . . . . . . . 202
Secure Shell Configuration . . . . . . . . . . . . 205
Secure Public Key Configuration . . . . . . . . . 206
Controlling Management Access (CLI) . . . . . . . . 208
Configuring a Management Access List . . . . . 208
Adding Users to the Local Database . . . . . . . 210
Configuring and Applying Authentication
Profiles . . . . . . . . . . . . . . . . . . . . . . 211
Managing Passwords. . . . . . . . . . . . . . . 212
Configuring RADIUS Server Information . . . . . 214
Configuring Telnet and SSH Access . . . . . . . 218
Configuring HTTP and HTTPS Access . . . . . . 219
Configuring DoS Information . . . . . . . . . . . 221

Contents 13
Management Access Configuration Examples . . . . . 223
Configuring a Management Access List . . . . . . 223
Configuring the Primary and Secondary
RADIUS Servers . . . . . . . . . . . . . . . . . . 224
Configuring an Authentication Profile . . . . . . . 226
Configuring Password Lockout. . . . . . . . . . . 227
10 Monitoring and Logging System
Information . . . . . . . . . . . . . . . . . . . . . . 231
System Monitoring Overview . . . . . . . . . . . . . . 231
What System Information Is Monitored?. . . . . . 231
Why Is System Information Needed? . . . . . . . 232
Where Are Log Messages Sent? . . . . . . . . . . 232
What Are the Severity Levels? . . . . . . . . . . . 233
What Are the System Startup and Operation
Logs? . . . . . . . . . . . . . . . . . . . . . . . . 233
What Is the Log Message Format? . . . . . . . . . 234
What Factors Should Be Considered When
Configuring Logging? . . . . . . . . . . . . . . . . 235
Default Log Settings . . . . . . . . . . . . . . . . . . . 235
Monitoring System Information and Configuring
Logging (Web) . . . . . . . . . . . . . . . . . . . . . . 236
Device Information . . . . . . . . . . . . . . . . . 236
System Health . . . . . . . . . . . . . . . . . . . 237
System Resources . . . . . . . . . . . . . . . . . 238
Integrated Cable Test for Copper Cables. . . . . . 239
Optical Transceiver Diagnostics . . . . . . . . . . 240
Log Global Settings . . . . . . . . . . . . . . . . . 242
RAM Log . . . . . . . . . . . . . . . . . . . . . . 243
Log File . . . . . . . . . . . . . . . . . . . . . . . 244
Remote Log Server . . . . . . . . . . . . . . . . . 244
Email Alert Global Configuration . . . . . . . . . . 247

14 Contents
Email Alert Mail Server Configuration . . . . . . 248
Email Alert Subject Configuration . . . . . . . . 250
Email Alert To Address Configuration. . . . . . . 251
Email Alert Statistics . . . . . . . . . . . . . . . 252
Monitoring System Information and Configuring
Logging (CLI) . . . . . . . . . . . . . . . . . . . . . . 253
Viewing System Information . . . . . . . . . . . 253
Running Cable Diagnostics . . . . . . . . . . . . 253
Configuring Local Logging . . . . . . . . . . . . 254
Configuring Remote Logging . . . . . . . . . . . 256
Configuring Mail Server Settings . . . . . . . . . 257
Configuring Email Alerts for Log Messages . . . 258
Logging Configuration Examples . . . . . . . . . . . 260
Configuring Local and Remote Logging . . . . . 260
Configuring Email Alerting . . . . . . . . . . . . 262
11 Managing General System Settings . . . 265
System Settings Overview . . . . . . . . . . . . . . . 265
Why Does System Information Need to Be
Configured? . . . . . . . . . . . . . . . . . . . . 266
What Are SDM Templates? . . . . . . . . . . . . 267
Why is the System Time Needed? . . . . . . . . 268
How Does SNTP Work?. . . . . . . . . . . . . . 268
Default General System Information . . . . . . . . . 268
Configuring General System Settings (Web) . . . . . 269
System Information . . . . . . . . . . . . . . . . 269
CLI Banner . . . . . . . . . . . . . . . . . . . . 272
SDM Template Preference . . . . . . . . . . . . 273
Clock . . . . . . . . . . . . . . . . . . . . . . . 274
SNTP Global Settings . . . . . . . . . . . . . . . 275

Contents 15
SNTP Authentication . . . . . . . . . . . . . . . . 276
SNTP Server . . . . . . . . . . . . . . . . . . . . 278
Summer Time Configuration . . . . . . . . . . . . 282
Time Zone Configuration . . . . . . . . . . . . . . 283
Slot Summary . . . . . . . . . . . . . . . . . . . . 284
Supported Cards . . . . . . . . . . . . . . . . . . 285
Configuring System Settings (CLI). . . . . . . . . . . . 286
Configuring System Information . . . . . . . . . . 286
Configuring the Banner. . . . . . . . . . . . . . . 287
Managing the SDM Template . . . . . . . . . . . 288
Configuring SNTP Authentication and an
SNTP Server . . . . . . . . . . . . . . . . . . . . 288
Setting the System Time and Date Manually. . . . 290
Viewing Slot Information . . . . . . . . . . . . . . 291
General System Settings Configuration Examples . . . 292
Configuring System and Banner Information . . . 292
Configuring SNTP. . . . . . . . . . . . . . . . . . 295
Configuring the Time Manually . . . . . . . . . . . 297
12 Configuring SNMP . . . . . . . . . . . . . . . . . 299
SNMP Overview . . . . . . . . . . . . . . . . . . . . . 299
What Is SNMP?. . . . . . . . . . . . . . . . . . . 299
What Are SNMP Traps? . . . . . . . . . . . . . . 300
Why Is SNMP Needed? . . . . . . . . . . . . . . 301
Default SNMP Values . . . . . . . . . . . . . . . . . . 301
Configuring SNMP (Web) . . . . . . . . . . . . . . . . 303
SNMP Global Parameters . . . . . . . . . . . . . 303
SNMP View Settings . . . . . . . . . . . . . . . . 304
Access Control Group . . . . . . . . . . . . . . . 306
SNMPv3 User Security Model (USM) . . . . . . . 308

16 Contents
Communities . . . . . . . . . . . . . . . . . . . 311
Notification Filter . . . . . . . . . . . . . . . . . 313
Notification Recipients . . . . . . . . . . . . . . 314
Trap Flags . . . . . . . . . . . . . . . . . . . . . 317
OSPFv2 Trap Flags . . . . . . . . . . . . . . . . 318
OSPFv3 Trap Flags . . . . . . . . . . . . . . . . 319
Trap Log . . . . . . . . . . . . . . . . . . . . . . 320
Configuring SNMP (CLI) . . . . . . . . . . . . . . . . 321
Configuring the SNMPv3 Engine ID. . . . . . . . 321
Configuring SNMP Views, Groups, and
Users . . . . . . . . . . . . . . . . . . . . . . . 322
Configuring Communities . . . . . . . . . . . . . 325
Configuring SNMP Notifications (Traps and
Informs). . . . . . . . . . . . . . . . . . . . . . 327
SNMP Configuration Examples . . . . . . . . . . . . 330
Configuring SNMPv1 and SNMPv2 . . . . . . . . 330
Configuring SNMPv3 . . . . . . . . . . . . . . . 331
13 Managing Images and Files. . . . . . . . . . 335
Image and File Management Overview . . . . . . . . 335
What Files Can Be Managed? . . . . . . . . . . 335
Why Is File Management Needed?. . . . . . . . 337
What Methods Are Supported for File
Management?. . . . . . . . . . . . . . . . . . . 339
What Factors Should Be Considered When
Managing Files?. . . . . . . . . . . . . . . . . . 339
How Is the Running Configuration Saved? . . . . 341
Managing Images and Files (Web) . . . . . . . . . . 342
File System . . . . . . . . . . . . . . . . . . . . 342
Active Images. . . . . . . . . . . . . . . . . . . 343
File Download . . . . . . . . . . . . . . . . . . . 344

Contents 17
File Upload . . . . . . . . . . . . . . . . . . . . . 346
Copy Files . . . . . . . . . . . . . . . . . . . . . . 348
Managing Images and Files (CLI) . . . . . . . . . . . . 349
Downloading and Activating a New
Image (TFTP) . . . . . . . . . . . . . . . . . . . . 349
Managing Files in Internal Flash . . . . . . . . . . 350
Uploading a Configuration File (SCP). . . . . . . . 351
Managing Configuration Scripts (SFTP) . . . . . . 352
File and Image Management Configuration
Examples. . . . . . . . . . . . . . . . . . . . . . . . . 353
Upgrading the Firmware . . . . . . . . . . . . . . 353
Managing Configuration Scripts . . . . . . . . . . 356
14 Automatically Updating the Image
and Configuration . . . . . . . . . . . . . . . . . 359
Auto Configuration Overview . . . . . . . . . . . . . . 359
What Is the DHCP Auto Configuration
Process? . . . . . . . . . . . . . . . . . . . . . . 359
Monitoring and Completing the DHCP
Auto Configuration Process . . . . . . . . . . . . 364
What Are the Dependencies for DHCP
Auto Configuration? . . . . . . . . . . . . . . . . 365
Default Auto Configuration Values . . . . . . . . . . . 366
Managing Auto Configuration (Web) . . . . . . . . . . 367
Auto-Install Configuration . . . . . . . . . . . . . 367
Managing Auto Configuration (CLI) . . . . . . . . . . . 368
Managing Auto Configuration . . . . . . . . . . . 368

18 Contents
Auto Configuration Example . . . . . . . . . . . . . . 369
Enabling DHCP Auto Configuration and Auto
Image Download . . . . . . . . . . . . . . . . . 369
15 Monitoring Switch Traffic . . . . . . . . . . . 371
Traffic Monitoring Overview. . . . . . . . . . . . . . 371
What is sFlow Technology? . . . . . . . . . . . . 371
What is RMON? . . . . . . . . . . . . . . . . . . 374
What is Port Mirroring?. . . . . . . . . . . . . . 375
Why is Traffic Monitoring Needed? . . . . . . . 376
Default Traffic Monitoring Values . . . . . . . . . . . 376
Monitoring Switch Traffic (Web) . . . . . . . . . . . 377
sFlow Agent Summary . . . . . . . . . . . . . . 377
sFlow Receiver Configuration . . . . . . . . . . 378
sFlow Sampler Configuration . . . . . . . . . . . 379
sFlow Poll Configuration . . . . . . . . . . . . . 380
Interface Statistics . . . . . . . . . . . . . . . . 381
Etherlike Statistics . . . . . . . . . . . . . . . . 382
GVRP Statistics . . . . . . . . . . . . . . . . . . 383
EAP Statistics . . . . . . . . . . . . . . . . . . . 384
Utilization Summary. . . . . . . . . . . . . . . . 385
Counter Summary . . . . . . . . . . . . . . . . . 386
Switchport Statistics . . . . . . . . . . . . . . . 387
RMON Statistics . . . . . . . . . . . . . . . . . 388
RMON History Control Statistics . . . . . . . . . 389
RMON History Table . . . . . . . . . . . . . . . 391
RMON Event Control . . . . . . . . . . . . . . . 392
RMON Event Log . . . . . . . . . . . . . . . . . 394
RMON Alarms. . . . . . . . . . . . . . . . . . . 395
Port Statistics . . . . . . . . . . . . . . . . . . . 397
LAG Statistics . . . . . . . . . . . . . . . . . . . 398
Port Mirroring . . . . . . . . . . . . . . . . . . . 399

Contents 19
Monitoring Switch Traffic (CLI) . . . . . . . . . . . . . 402
Configuring sFlow. . . . . . . . . . . . . . . . . . 402
Configuring RMON . . . . . . . . . . . . . . . . . 404
Viewing Statistics. . . . . . . . . . . . . . . . . . 406
Configuring Port Mirroring . . . . . . . . . . . . . 407
Traffic Monitoring Configuration Examples. . . . . . . 408
Configuring sFlow. . . . . . . . . . . . . . . . . . 408
Configuring RMON . . . . . . . . . . . . . . . . . 410
16 Configuring iSCSI Optimization . . . . . . . 411
iSCSI Optimization Overview . . . . . . . . . . . . . . 411
What Does iSCSI Optimization Do?. . . . . . . . . 412
How Does the Switch Detect iSCSI
Traffic Flows? . . . . . . . . . . . . . . . . . . . . 412
How Is Quality of Service Applied to iSCSI
Traffic Flows? . . . . . . . . . . . . . . . . . . . . 412
How Does iSCSI Optimization Use ACLs? . . . . . 413
What Information Does the Switch Track in
iSCSI Traffic Flows?. . . . . . . . . . . . . . . . . 413
How Does iSCSI Optimization Interact With
Dell EqualLogic Arrays? . . . . . . . . . . . . . . 414
What Occurs When iSCSI Optimization Is
Enabled or Disabled? . . . . . . . . . . . . . . . . 414
How Does iSCSI Optimization Interact with
DCBX?. . . . . . . . . . . . . . . . . . . . . . . . 415
How Does iSCSI Optimization Interact with
Dell Compellent Arrays? . . . . . . . . . . . . . . 415
Default iSCSI Optimization Values . . . . . . . . . . . 416

20 Contents
Configuring iSCSI Optimization (Web). . . . . . . . . 417
iSCSI Global Configuration . . . . . . . . . . . . 417
iSCSI Targets Table . . . . . . . . . . . . . . . . 418
iSCSI Sessions Table . . . . . . . . . . . . . . . 419
iSCSI Sessions Detailed . . . . . . . . . . . . . 420
Configuring iSCSI Optimization (CLI) . . . . . . . . . 421
iSCSI Optimization Configuration Examples . . . . . 423
Configuring iSCSI Optimization Between
Servers and a Disk Array . . . . . . . . . . . . . 423
17 Configuring a Captive Portal . . . . . . . . . 425
Captive Portal Overview . . . . . . . . . . . . . . . . 425
What Does a Captive Portal Do? . . . . . . . . . 425
Is the Captive Portal Feature Dependent on
Any Other Feature? . . . . . . . . . . . . . . . . 426
What Factors Should Be Considered When
Designing and Configuring a Captive Portal?. . . 427
How Does Captive Portal Work? . . . . . . . . . 428
What Captive Portal Pages Can Be
Customized?. . . . . . . . . . . . . . . . . . . . 429
Default Captive Portal Behavior and Settings. . . . . 430
Configuring the Captive Portal (Web) . . . . . . . . . 432
Captive Portal Global Configuration . . . . . . . 432
Captive Portal Configuration . . . . . . . . . . . 433
Local User. . . . . . . . . . . . . . . . . . . . . 438
User Group . . . . . . . . . . . . . . . . . . . . 442
Interface Association . . . . . . . . . . . . . . . 444
Captive Portal Global Status . . . . . . . . . . . 445
Captive Portal Activation and Activity
Status . . . . . . . . . . . . . . . . . . . . . . . 446
Interface Activation Status . . . . . . . . . . . . 447