Dell Networking 7048 User manual

Dell PowerConnect
7000 Series Switch
User’s Configuration
Guide
Regulatory Models: PC7024, PC7024P,
PC7024F, PC7048, PC7048P, PC7048R, and
PC7048R-RA

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.
© 2013 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
Mozilla Foundation.
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: PC7024, PC7024P, PC7024F, PC7048, PC7048P, PC7048R, and PC7048R-RA
January 2013 Rev. A05

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 . . . . . . . . . . . . . . . . . . . 53
Integrated DHCP Server . . . . . . . . . . . . . . 54
Management of Basic Network Information. . . . 54
IPv6 Management Features . . . . . . . . . . . . 54
Dual Software Images . . . . . . . . . . . . . . . 54
File Management . . . . . . . . . . . . . . . . . . 55
Switch Database Management Templates. . . . . 55
Automatic Installation of Firmware and
Configuration . . . . . . . . . . . . . . . . . . . . 55
sFlow . . . . . . . . . . . . . . . . . . . . . . . . 56
SNMP Alarms and Trap Logs . . . . . . . . . . . . 56
CDP Interoperability through ISDP . . . . . . . . . 56
Remote Monitoring (RMON) . . . . . . . . . . . . 56
Stacking Features . . . . . . . . . . . . . . . . . . . . 57
High Port Count . . . . . . . . . . . . . . . . . . . 57

4Contents
Single IP Management . . . . . . . . . . . . . . . 57
Automatic Firmware Update for New Stack
Members . . . . . . . . . . . . . . . . . . . . . . 57
Stacking Compatibility with the PowerConnect
M6348 . . . . . . . . . . . . . . . . . . . . . . . . 57
Master Failover with Transparent Transition . . . . 58
Nonstop Forwarding on the Stack . . . . . . . . . 58
Hot Add/Delete and Firmware Synchronization . . 58
Security Features . . . . . . . . . . . . . . . . . . . . 58
Configurable Access and Authentication
Profiles . . . . . . . . . . . . . . . . . . . . . . . 58
Password-Protected Management Access . . . . 59
Strong Password Enforcement . . . . . . . . . . . 59
TACACS+ Client . . . . . . . . . . . . . . . . . . . 59
RADIUS Support . . . . . . . . . . . . . . . . . . 59
SSH/SSL. . . . . . . . . . . . . . . . . . . . . . . 60
Inbound Telnet Control . . . . . . . . . . . . . . . 60
Denial of Service . . . . . . . . . . . . . . . . . . 60
Port Protection . . . . . . . . . . . . . . . . . . . 60
Captive Portal . . . . . . . . . . . . . . . . . . . . 61
Dot1x Authentication (IEEE 802.1X) . . . . . . . . . 61
MAC-Based 802.1X Authentication . . . . . . . . . 61
Dot1x Monitor Mode . . . . . . . . . . . . . . . . 62
MAC-Based Port Security . . . . . . . . . . . . . 62
Access Control Lists (ACL) . . . . . . . . . . . . . 62
Time-Based ACLs . . . . . . . . . . . . . . . . . . 63
IP Source Guard (IPSG). . . . . . . . . . . . . . . 63
DHCP Snooping . . . . . . . . . . . . . . . . . . . 63
Dynamic ARP Inspection . . . . . . . . . . . . . . 63
Protected Ports (Private VLAN Edge). . . . . . . . 64
Green Technology Features . . . . . . . . . . . . . . . 65
Energy Detect Mode . . . . . . . . . . . . . . . . 65
Energy Efficient Ethernet . . . . . . . . . . . . . . 65

Contents 5
Power Utilization Reporting . . . . . . . . . . . . 65
Power over Ethernet (PoE) Plus Features . . . . . . . . 66
Power Over Ethernet (PoE) Plus Configuration . . 66
PoE Plus Support . . . . . . . . . . . . . . . . . . 66
Switching Features . . . . . . . . . . . . . . . . . . . 66
Flow Control Support (IEEE 802.3x) . . . . . . . . . 66
Head of Line Blocking Prevention . . . . . . . . . 66
Jumbo Frames Support . . . . . . . . . . . . . . . 67
Auto-MDI/MDIX Support . . . . . . . . . . . . . . 67
VLAN-Aware MAC-based Switching. . . . . . . . 67
Back Pressure Support . . . . . . . . . . . . . . . 67
Auto Negotiation . . . . . . . . . . . . . . . . . . 68
Broadcast Storm Control . . . . . . . . . . . . . . 68
Port Mirroring. . . . . . . . . . . . . . . . . . . . 68
Static and Dynamic MAC Address Tables . . . . . 69
Link Layer Discovery Protocol (LLDP) . . . . . . . 69
Link Layer Discovery Protocol (LLDP) for
Media Endpoint Devices . . . . . . . . . . . . . . 69
Connectivity Fault Management
(IEEE 802.1ag) . . . . . . . . . . . . . . . . . . . . 69
switchCisco Protocol Filtering . . . . . . . . . . . 70
DHCP Layer 2 Relay. . . . . . . . . . . . . . . . . 70
Virtual Local Area Network Supported Features . . . . 70
VLAN Support. . . . . . . . . . . . . . . . . . . . 70
Port-Based VLANs . . . . . . . . . . . . . . . . . 70
IP Subnet-based VLAN . . . . . . . . . . . . . . . 71
MAC-based VLAN . . . . . . . . . . . . . . . . . 71
IEEE 802.1v Protocol-Based VLANs . . . . . . . . 71
GARP and GVRP Support . . . . . . . . . . . . . . 71
Voice VLAN . . . . . . . . . . . . . . . . . . . . . 71
Guest VLAN . . . . . . . . . . . . . . . . . . . . . 72
Double VLANs . . . . . . . . . . . . . . . . . . . 72

6Contents
Spanning Tree Protocol Features . . . . . . . . . . . . 73
Spanning Tree Protocol (STP) . . . . . . . . . . . 73
Spanning Tree Port Settings . . . . . . . . . . . . 73
Rapid Spanning Tree . . . . . . . . . . . . . . . . 73
Multiple Spanning Tree . . . . . . . . . . . . . . . 73
Bridge Protocol Data Unit (BPDU) Guard. . . . . . 74
BPDU Filtering . . . . . . . . . . . . . . . . . . . 74
Link Aggregation Features . . . . . . . . . . . . . . . . 74
Link Aggregation . . . . . . . . . . . . . . . . . . 74
Link Aggregate Control Protocol (LACP) . . . . . . 74
Routing Features . . . . . . . . . . . . . . . . . . . . . 76
Address Resolution Protocol (ARP) Table
Management . . . . . . . . . . . . . . . . . . . . 76
VLAN Routing . . . . . . . . . . . . . . . . . . . . 76
IP Configuration . . . . . . . . . . . . . . . . . . . 76
Open Shortest Path First (OSPF) . . . . . . . . . . 76
BOOTP/DHCP Relay Agent . . . . . . . . . . . . . 77
IP Helper and UDP Relay . . . . . . . . . . . . . . 77
Routing Information Protocol . . . . . . . . . . . . 77
Router Discovery . . . . . . . . . . . . . . . . . . 77
Routing Table . . . . . . . . . . . . . . . . . . . . 77
Virtual Router Redundancy Protocol (VRRP) . . . . 78
Tunnel and Loopback Interfaces . . . . . . . . . . 78
IPv6 Routing Features . . . . . . . . . . . . . . . . . . 78
IPv6 Configuration . . . . . . . . . . . . . . . . . 78
IPv6 Routes . . . . . . . . . . . . . . . . . . . . . 79
OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . 79
DHCPv6 . . . . . . . . . . . . . . . . . . . . . . . 79
Quality of Service (QoS) Features . . . . . . . . . . . . 80
Differentiated Services (DiffServ) . . . . . . . . . 80
Class Of Service (CoS) . . . . . . . . . . . . . . . 80

Contents 7
Auto Voice over IP (VoIP). . . . . . . . . . . . . . 80
Internet Small Computer System Interface
(iSCSI) Optimization. . . . . . . . . . . . . . . . . 81
Layer 2 Multicast Features . . . . . . . . . . . . . . . 81
MAC Multicast Support. . . . . . . . . . . . . . . 81
IGMP Snooping . . . . . . . . . . . . . . . . . . . 81
IGMP Snooping Querier . . . . . . . . . . . . . . 82
MLD Snooping . . . . . . . . . . . . . . . . . . . 82
Multicast VLAN Registration . . . . . . . . . . . . 82
Layer 3 Multicast Features . . . . . . . . . . . . . . . 83
Distance Vector Multicast Routing Protocol . . . . 83
Internet Group Management Protocol . . . . . . . 83
IGMP Proxy . . . . . . . . . . . . . . . . . . . . . 83
Protocol Independent Multicast—Dense
Mode . . . . . . . . . . . . . . . . . . . . . . . . 83
Protocol Independent Multicast—Sparse
Mode . . . . . . . . . . . . . . . . . . . . . . . . 84
Protocol Independent Multicast—Source
Specific Multicast . . . . . . . . . . . . . . . . . 84
Protocol Independent Multicast IPv6 Support . . . 84
MLD/MLDv2 (RFC2710/RFC3810) . . . . . . . . . . 84
3 Hardware Overview. . . . . . . . . . . . . . . . . 85
PowerConnect 7000 Series Front Panel . . . . . . . . . 85
Switch Ports . . . . . . . . . . . . . . . . . . . . 88
Console Port . . . . . . . . . . . . . . . . . . . . 89
Out-of-Band Management Port . . . . . . . . . . 89
USB Port . . . . . . . . . . . . . . . . . . . . . . 89
Reset Button . . . . . . . . . . . . . . . . . . . . 90
Port and System LEDs . . . . . . . . . . . . . . . 90
Stack Master LED and Stack Number Display . . . 90

8Contents
PowerConnect 7000 Series Back Panel . . . . . . . . . 90
Expansion Slots for Plug-in Modules . . . . . . . . 92
Power Supplies . . . . . . . . . . . . . . . . . . . 93
Ventilation System . . . . . . . . . . . . . . . . . 94
Locator LED . . . . . . . . . . . . . . . . . . . . . 94
LED Definitions . . . . . . . . . . . . . . . . . . . . . . 95
Port LEDs . . . . . . . . . . . . . . . . . . . . . . 95
Module LEDs . . . . . . . . . . . . . . . . . . . . 97
System LEDs . . . . . . . . . . . . . . . . . . . . 99
Switch Addresses . . . . . . . . . . . . . . . . . . . 100
4 Using Dell OpenManage Switch
Administrator . . . . . . . . . . . . . . . . . . . . 103
About Dell OpenManage Switch Administrator. . . . 103
Starting the Application . . . . . . . . . . . . . . . . 104
Understanding the Interface . . . . . . . . . . . . . . 105
Defining Fields . . . . . . . . . . . . . . . . . . . . . 107
Understanding the Device View . . . . . . . . . . . . 108
Using the Device View Port Features. . . . . . . 108
Using the Device View Switch Locator
Feature . . . . . . . . . . . . . . . . . . . . . . 108
5 Using the Command-Line Interface . . . . 109
Accessing the Switch Through the CLI . . . . . . . . 109
Console Connection. . . . . . . . . . . . . . . . 109
Telnet Connection. . . . . . . . . . . . . . . . . 110

Contents 9
Understanding Command Modes . . . . . . . . . . . . 111
Entering CLI Commands . . . . . . . . . . . . . . . . . 113
Using the Question Mark to Get Help . . . . . . . 113
Using Command Completion . . . . . . . . . . . . 114
Entering Abbreviated Commands . . . . . . . . . 114
Negating Commands . . . . . . . . . . . . . . . . 114
Understanding Error Messages . . . . . . . . . . 115
Recalling Commands from the History Buffer . . . 115
6 Default Settings. . . . . . . . . . . . . . . . . . . 117
7 Setting the IP Address and Other
Basic Network Information . . . . . . . . . . 121
IP Address and Network Information Overview . . . . 121
What Is the Basic Network Information? . . . . . 121
Why Is Basic Network Information Needed? . . . 122
How Is Basic Network Information
Configured? . . . . . . . . . . . . . . . . . . . . . 123
What Is Out-of-Band Management and
In-Band Management? . . . . . . . . . . . . . . . 123
Default Network Information . . . . . . . . . . . . . . 125
Configuring Basic Network Information (Web) . . . . . 126
Out-of-Band Interface . . . . . . . . . . . . . . . 126
IP Interface Configuration (Default VLAN IP
Address) . . . . . . . . . . . . . . . . . . . . . . 127
Route Entry Configuration (Switch Default
Gateway) . . . . . . . . . . . . . . . . . . . . . . 128
Domain Name Server. . . . . . . . . . . . . . . . 130
Default Domain Name . . . . . . . . . . . . . . . 131
Host Name Mapping . . . . . . . . . . . . . . . . 132

10 Contents
Dynamic Host Name Mapping . . . . . . . . . . 133
Configuring Basic Network Information (CLI). . . . . 134
Enabling the DHCP Client on the OOB Port . . . . 134
Enabling the DHCP Client on the Default VLAN . 134
Managing DHCP Leases . . . . . . . . . . . . . 135
Configuring Static Network Information on the
OOB Port . . . . . . . . . . . . . . . . . . . . . 136
Configuring Static Network Information on the
Default VLAN . . . . . . . . . . . . . . . . . . . 136
Configuring and Viewing Additional Network
Information . . . . . . . . . . . . . . . . . . . . 137
Basic Network Information Configuration Example . 138
8 Managing a Switch Stack . . . . . . . . . . . 141
Stacking Overview . . . . . . . . . . . . . . . . . . . 141
PowerConnect 7000 Series and M6348
Stacking Compatibility . . . . . . . . . . . . . . 143
How is the Stack Master Selected? . . . . . . . 143
Adding a Switch to the Stack . . . . . . . . . . . 145
Removing a Switch from the Stack . . . . . . . . 146
How is the Firmware Updated on the Stack?. . . 146
What is Stacking Standby? . . . . . . . . . . . . 147
What is Nonstop Forwarding? . . . . . . . . . . 147
Switch Stack MAC Addressing and Stack
Design Considerations . . . . . . . . . . . . . . 150
NSF Network Design Considerations. . . . . . . 150
Why is Stacking Needed? . . . . . . . . . . . . 151
Default Stacking Values . . . . . . . . . . . . . . . . 151
Managing and Monitoring the Stack (Web) . . . . . . 152
Unit Configuration. . . . . . . . . . . . . . . . . 152
Stack Summary . . . . . . . . . . . . . . . . . . 154

Contents 11
Stack Firmware Synchronization . . . . . . . . . . 155
Supported Switches . . . . . . . . . . . . . . . . 156
Stack Port Summary . . . . . . . . . . . . . . . . 157
Stack Port Counters . . . . . . . . . . . . . . . . 158
Stack Port Diagnostics . . . . . . . . . . . . . . . 158
NSF Summary. . . . . . . . . . . . . . . . . . . . 159
Checkpoint Statistics . . . . . . . . . . . . . . . . 160
Managing the Stack (CLI) . . . . . . . . . . . . . . . . 161
Configuring Stack Member, Stack Port, and
NSF Settings . . . . . . . . . . . . . . . . . . . . 161
Viewing and Clearing Stacking and NSF
Information . . . . . . . . . . . . . . . . . . . . . 163
Stacking and NSF Usage Scenarios. . . . . . . . . . . 163
Basic Failover. . . . . . . . . . . . . . . . . . . . 164
Preconfiguring a Stack Member . . . . . . . . . . 166
NSF in the Data Center . . . . . . . . . . . . . . . 168
NSF and VoIP . . . . . . . . . . . . . . . . . . . . 169
NSF and DHCP Snooping . . . . . . . . . . . . . . 170
NSF and the Storage Access Network . . . . . . . 171
NSF and Routed Access . . . . . . . . . . . . . . 173
9 Configuring Authentication,
Authorization, and Accounting . . . . . . . 175
AAA Overview . . . . . . . . . . . . . . . . . . . . . . 175
Methods . . . . . . . . . . . . . . . . . . . . . . 176
Access Lines . . . . . . . . . . . . . . . . . . . . 177
Authentication . . . . . . . . . . . . . . . . . . . . . . 177
Authorization. . . . . . . . . . . . . . . . . . . . . . . 178
Exec Authorization Capabilities . . . . . . . . . . 179

12 Contents
Accounting . . . . . . . . . . . . . . . . . . . . . . . 180
Authentication Examples . . . . . . . . . . . . . . . 181
Local Authentication Example . . . . . . . . . . 181
TACACS+ Authentication Example . . . . . . . . 182
RADIUS Authentication Example . . . . . . . . . 184
Authorization Examples . . . . . . . . . . . . . . . . 185
Local Authorization Example—Direct Login
to Privileged EXEC Mode . . . . . . . . . . . . . 185
TACACS+ Authorization Example—Direct Login
to Privileged EXEC Mode . . . . . . . . . . . . . 185
TACACS+ Authorization Example—
Administrative Profiles . . . . . . . . . . . . . . 186
TACACS+ Authorization Example—Custom
Administrative Profile . . . . . . . . . . . . . . . 187
TACACS+ Authorization Example—
Per-command Authorization . . . . . . . . . . . 188
RADIUS Authorization Example—Direct Login
to Privileged EXEC Mode . . . . . . . . . . . . . 189
RADIUS Authorization Example—
Administrative Profiles . . . . . . . . . . . . . . 189
Using RADIUS Servers to Control Management
Access . . . . . . . . . . . . . . . . . . . . . . . . . 190
How Does RADIUS Control Management
Access? . . . . . . . . . . . . . . . . . . . . . . 190
Which RADIUS Attributes Does the Switch
Support?. . . . . . . . . . . . . . . . . . . . . . 192
How Are RADIUS Attributes Processed on
the Switch? . . . . . . . . . . . . . . . . . . . . 194
Using TACACS+ Servers to Control Management
Access . . . . . . . . . . . . . . . . . . . . . . . . . 195
Which TACACS+ Attributes Does the Switch
Support?. . . . . . . . . . . . . . . . . . . . . . 196

Contents 13
Default Configurations. . . . . . . . . . . . . . . . . . 197
Method Lists . . . . . . . . . . . . . . . . . . . . 197
Access Lines (AAA) . . . . . . . . . . . . . . . . 197
Access Lines (Non-AAA) . . . . . . . . . . . . . . 198
Administrative Profiles . . . . . . . . . . . . . . . 198
10 Monitoring and Logging System
Information . . . . . . . . . . . . . . . . . . . . . . 201
System Monitoring Overview . . . . . . . . . . . . . . 201
What System Information Is Monitored?. . . . . . 201
Why Is System Information Needed? . . . . . . . 202
Where Are Log Messages Sent? . . . . . . . . . . 202
What Are the Severity Levels? . . . . . . . . . . . 203
What Are the System Startup and Operation
Logs? . . . . . . . . . . . . . . . . . . . . . . . . 203
What Is the Log Message Format? . . . . . . . . . 204
What Factors Should Be Considered When
Configuring Logging? . . . . . . . . . . . . . . . . 205
Default Log Settings . . . . . . . . . . . . . . . . . . . 205
Monitoring System Information and Configuring
Logging (Web) . . . . . . . . . . . . . . . . . . . . . . 207
Device Information . . . . . . . . . . . . . . . . . 207
System Health . . . . . . . . . . . . . . . . . . . 209
System Resources . . . . . . . . . . . . . . . . . 210
Unit Power Usage History . . . . . . . . . . . . . 211
Integrated Cable Test for Copper Cables. . . . . . 212
Optical Transceiver Diagnostics . . . . . . . . . . 213
Log Global Settings . . . . . . . . . . . . . . . . . 215
RAM Log . . . . . . . . . . . . . . . . . . . . . . 216
Log File . . . . . . . . . . . . . . . . . . . . . . . 217
Remote Log Server . . . . . . . . . . . . . . . . . 217
Email Alert Global Configuration . . . . . . . . . . 220

14 Contents
Email Alert Mail Server Configuration . . . . . . 221
Email Alert Subject Configuration . . . . . . . . 223
Email Alert To Address Configuration. . . . . . . 224
Email Alert Statistics . . . . . . . . . . . . . . . 225
Monitoring System Information and Configuring
Logging (CLI) . . . . . . . . . . . . . . . . . . . . . . 226
Viewing System Information and Enabling
the Locator LED . . . . . . . . . . . . . . . . . . 226
Running Cable Diagnostics . . . . . . . . . . . . 226
Configuring Local Logging . . . . . . . . . . . . 227
Configuring Remote Logging . . . . . . . . . . . 229
Configuring Mail Server Settings . . . . . . . . . 230
Configuring Email Alerts for Log Messages . . . 231
Logging Configuration Examples . . . . . . . . . . . 233
Configuring Local and Remote Logging . . . . . 233
Configuring Email Alerting . . . . . . . . . . . . 234
11 Managing General System Settings . . . 239
System Settings Overview . . . . . . . . . . . . . . . 239
Why Does System Information Need to
Be Configured? . . . . . . . . . . . . . . . . . . 240
What Are SDM Templates? . . . . . . . . . . . . 241
Why is the System Time Needed? . . . . . . . . 242
How Does SNTP Work?. . . . . . . . . . . . . . 242
What Configuration Is Required for Plug-In
Modules? . . . . . . . . . . . . . . . . . . . . . 243
What Are the Key PoE Plus Features for the
PC7024P and PC7048P? . . . . . . . . . . . . . . 243
Default General System Information . . . . . . . . . 245
Configuring General System Settings (Web) . . . . . 246
System Information . . . . . . . . . . . . . . . . 246

Contents 15
CLI Banner . . . . . . . . . . . . . . . . . . . . . 249
SDM Template Preference . . . . . . . . . . . . . 250
Clock . . . . . . . . . . . . . . . . . . . . . . . . 251
SNTP Global Settings . . . . . . . . . . . . . . . . 252
SNTP Authentication . . . . . . . . . . . . . . . . 253
SNTP Server . . . . . . . . . . . . . . . . . . . . 255
Summer Time Configuration . . . . . . . . . . . . 259
Time Zone Configuration . . . . . . . . . . . . . . 260
Card Configuration . . . . . . . . . . . . . . . . . 261
Slot Summary . . . . . . . . . . . . . . . . . . . . 262
Supported Cards . . . . . . . . . . . . . . . . . . 263
Power Over Ethernet Global Configuration
(7024P/7048P Only) . . . . . . . . . . . . . . . . . 264
Power Over Ethernet Interface Configuration
(7024P/7048P Only) . . . . . . . . . . . . . . . . . 265
Configuring System Settings (CLI). . . . . . . . . . . . 267
Configuring System Information . . . . . . . . . . 267
Configuring the Banner. . . . . . . . . . . . . . . 268
Managing the SDM Template . . . . . . . . . . . 269
Configuring SNTP Authentication and an
SNTP Server . . . . . . . . . . . . . . . . . . . . 269
Setting the System Time and Date Manually. . . . 271
Configuring the Expansion Slots . . . . . . . . . . 272
Configuring PoE Settings (7024P/7048P Only) . . . 273
General System Settings Configuration Examples . . . 276
Configuring System and Banner Information . . . 276
Configuring SNTP. . . . . . . . . . . . . . . . . . 279
Configuring the Time Manually . . . . . . . . . . . 281
12 Configuring SNMP . . . . . . . . . . . . . . . . . 283
SNMP Overview . . . . . . . . . . . . . . . . . . . . . 283
What Is SNMP?. . . . . . . . . . . . . . . . . . . 283

16 Contents
What Are SNMP Traps? . . . . . . . . . . . . . 284
Why Is SNMP Needed?. . . . . . . . . . . . . . 285
Default SNMP Values . . . . . . . . . . . . . . . . . 285
Configuring SNMP (Web) . . . . . . . . . . . . . . . 287
SNMP Global Parameters . . . . . . . . . . . . 287
SNMP View Settings . . . . . . . . . . . . . . . 288
Access Control Group . . . . . . . . . . . . . . 290
SNMPv3 User Security Model (USM) . . . . . . 292
Communities . . . . . . . . . . . . . . . . . . . 295
Notification Filter . . . . . . . . . . . . . . . . . 297
Notification Recipients . . . . . . . . . . . . . . 298
Trap Flags . . . . . . . . . . . . . . . . . . . . . 301
OSPFv2 Trap Flags . . . . . . . . . . . . . . . . 302
OSPFv3 Trap Flags . . . . . . . . . . . . . . . . 303
Trap Log . . . . . . . . . . . . . . . . . . . . . . 304
Configuring SNMP (CLI) . . . . . . . . . . . . . . . . 305
Configuring the SNMPv3 Engine ID. . . . . . . . 305
Configuring SNMP Views, Groups, and Users . . 306
Configuring Communities . . . . . . . . . . . . . 309
Configuring SNMP Notifications (Traps and
Informs) . . . . . . . . . . . . . . . . . . . . . . 311
SNMP Configuration Examples . . . . . . . . . . . . 314
Configuring SNMPv1 and SNMPv2 . . . . . . . . 314
Configuring SNMPv3 . . . . . . . . . . . . . . . 315
13 Managing Images and Files. . . . . . . . . . 319
Image and File Management Overview . . . . . . . . 319
What Files Can Be Managed? . . . . . . . . . . 319
Why Is File Management Needed?. . . . . . . . 321

Contents 17
What Methods Are Supported for File
Management? . . . . . . . . . . . . . . . . . . . 323
What Factors Should Be Considered When
Managing Files? . . . . . . . . . . . . . . . . . . 323
How Is the Running Configuration Saved? . . . . . 325
Managing Images and Files (Web) . . . . . . . . . . . 326
File System . . . . . . . . . . . . . . . . . . . . . 326
Active Images . . . . . . . . . . . . . . . . . . . 327
USB Flash Drive. . . . . . . . . . . . . . . . . . . 328
File Download. . . . . . . . . . . . . . . . . . . . 329
File Upload . . . . . . . . . . . . . . . . . . . . . 331
Copy Files . . . . . . . . . . . . . . . . . . . . . . 333
Managing Images and Files (CLI) . . . . . . . . . . . . 334
Downloading and Activating a New Image
(TFTP) . . . . . . . . . . . . . . . . . . . . . . . . 334
Managing Files in Internal Flash . . . . . . . . . . 335
Managing Files on a USB Flash Device . . . . . . 336
Uploading a Configuration File (SCP). . . . . . . . 336
Managing Configuration Scripts (SFTP) . . . . . . 337
File and Image Management Configuration
Examples. . . . . . . . . . . . . . . . . . . . . . . . . 338
Upgrading the Firmware . . . . . . . . . . . . . . 338
Managing Configuration Scripts . . . . . . . . . . 341
Managing Files by Using the USB Flash Drive . . . 343
14 Automatically Updating the Image
and Configuration . . . . . . . . . . . . . . . . . 345
Auto Configuration Overview . . . . . . . . . . . . . . 345
What Is USB Auto Configuration? . . . . . . . . . 346
What Files Does USB Auto Configuration
Use?. . . . . . . . . . . . . . . . . . . . . . . . . 346

18 Contents
How Does USB Auto Configuration Use the
Files on the USB Device? . . . . . . . . . . . . . 348
What Is the Setup File Format? . . . . . . . . . . 349
What Is the DHCP Auto Configuration
Process? . . . . . . . . . . . . . . . . . . . . . 350
Monitoring and Completing the DHCP
Auto Configuration Process . . . . . . . . . . . 355
What Are the Dependencies for DHCP
Auto Configuration?. . . . . . . . . . . . . . . . 356
Default Auto Configuration Values . . . . . . . . . . 357
Managing Auto Configuration (Web) . . . . . . . . . 358
Auto-Install Configuration . . . . . . . . . . . . 358
Managing Auto Configuration (CLI) . . . . . . . . . . 359
Managing Auto Configuration . . . . . . . . . . 359
Auto Configuration Example . . . . . . . . . . . . . . 360
Enabling USB Auto Configuration and Auto
Image Download . . . . . . . . . . . . . . . . . 360
Enabling DHCP Auto Configuration and Auto
Image Download . . . . . . . . . . . . . . . . . 362
15 Monitoring Switch Traffic . . . . . . . . . . . 363
Traffic Monitoring Overview. . . . . . . . . . . . . . 363
What is sFlow Technology? . . . . . . . . . . . . 363
What is RMON? . . . . . . . . . . . . . . . . . . 366
What is Port Mirroring?. . . . . . . . . . . . . . 367
Why is Traffic Monitoring Needed? . . . . . . . 368
Default Traffic Monitoring Values . . . . . . . . . . . 368
Monitoring Switch Traffic (Web) . . . . . . . . . . . 369
sFlow Agent Summary . . . . . . . . . . . . . . 369

Contents 19
sFlow Receiver Configuration . . . . . . . . . . . 370
sFlow Sampler Configuration. . . . . . . . . . . . 371
sFlow Poll Configuration . . . . . . . . . . . . . . 372
Interface Statistics . . . . . . . . . . . . . . . . . 373
Etherlike Statistics . . . . . . . . . . . . . . . . . 374
GVRP Statistics . . . . . . . . . . . . . . . . . . . 375
EAP Statistics. . . . . . . . . . . . . . . . . . . . 376
Utilization Summary . . . . . . . . . . . . . . . . 377
Counter Summary. . . . . . . . . . . . . . . . . . 378
Switchport Statistics . . . . . . . . . . . . . . . . 379
RMON Statistics . . . . . . . . . . . . . . . . . . 380
RMON History Control Statistics . . . . . . . . . . 381
RMON History Table . . . . . . . . . . . . . . . . 383
RMON Event Control . . . . . . . . . . . . . . . . 384
RMON Event Log . . . . . . . . . . . . . . . . . . 386
RMON Alarms . . . . . . . . . . . . . . . . . . . 387
Port Statistics. . . . . . . . . . . . . . . . . . . . 389
LAG Statistics. . . . . . . . . . . . . . . . . . . . 390
Port Mirroring. . . . . . . . . . . . . . . . . . . . 391
Monitoring Switch Traffic (CLI) . . . . . . . . . . . . . 393
Configuring sFlow. . . . . . . . . . . . . . . . . . 393
Configuring RMON . . . . . . . . . . . . . . . . . 395
Viewing Statistics. . . . . . . . . . . . . . . . . . 397
Configuring Port Mirroring . . . . . . . . . . . . . 398
Traffic Monitoring Configuration Examples. . . . . . . 399
Configuring sFlow. . . . . . . . . . . . . . . . . . 399
Configuring RMON . . . . . . . . . . . . . . . . . 401
16 Configuring iSCSI Optimization . . . . . . . 403
iSCSI Optimization Overview . . . . . . . . . . . . . . 403
What Does iSCSI Optimization Do?. . . . . . . . . 404

20 Contents
How Does the Switch Detect iSCSI Traffic
Flows?. . . . . . . . . . . . . . . . . . . . . . . 404
How Is Quality of Service Applied to iSCSI
Traffic Flows? . . . . . . . . . . . . . . . . . . . 404
How Does iSCSI Optimization Use ACLs? . . . . 405
What Information Does the Switch Track in
iSCSI Traffic Flows?. . . . . . . . . . . . . . . . 405
How Does iSCSI Optimization Interact With
Dell EqualLogic Arrays?. . . . . . . . . . . . . . 407
What Occurs When iSCSI Optimization Is
Enabled or Disabled? . . . . . . . . . . . . . . . 407
How Does iSCSI Optimization Interact with
Dell Compellent Arrays? . . . . . . . . . . . . . 408
Default iSCSI Optimization Values . . . . . . . . . . 409
Configuring iSCSI Optimization (Web). . . . . . . . . 410
iSCSI Global Configuration . . . . . . . . . . . . 410
iSCSI Targets Table . . . . . . . . . . . . . . . . 411
iSCSI Sessions Table . . . . . . . . . . . . . . . 412
iSCSI Sessions Detailed . . . . . . . . . . . . . 413
Configuring iSCSI Optimization (CLI) . . . . . . . . . 414
iSCSI Optimization Configuration Examples . . . . . 416
Configuring iSCSI Optimization Between
Servers and a Disk Array . . . . . . . . . . . . . 416
17 Configuring Captive Portal . . . . . . . . . . 419
Captive Portal Overview . . . . . . . . . . . . . . . . 419
What Does Captive Portal Do? . . . . . . . . . . 419
Is the Captive Portal Feature Dependent
on Any Other Feature? . . . . . . . . . . . . . . 420
What Factors Should Be Considered When
Designing and Configuring a Captive Portal?. . . 421
How Does Captive Portal Work? . . . . . . . . . 422