Dell PowerSwitch N3000 Series User guide

Dell Networking N-Series

N1500, N2000, N3000, and

N4000 Switches

User’s Configuration

Guide

Version 6.3.0.0 and Later

Regulatory Models: N1524, N1524P,

N1548, N1548P, N2024, N2024P, N2038,

N2048P, N3024, N3024F, N3024P, N3048,

N3048P, N4032, N4032F, N4064, N4064F

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.

copyright and intellectual property laws. Dell™ and the Dell logo are trademarks of Dell Inc. in the

United States and/or other jurisdictions. All other marks and names mentioned herein may be

trademarks of their respective companies.

Regulatory Models: N1524, N1524P, N1548, N1548P, N2024, N2024P, N2038, N2048P, N3024, N3024F, N3024P, N3048, N3048P, N4032,

N4032F, N4064, N4064F

January 2016 Rev. A02

Contents 3

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 55

About This Document . . . . . . . . . . . . . . . . . . 55

Audience . . . . . . . . . . . . . . . . . . . . . . . . . 55

Document Conventions

. . . . . . . . . . . . . . . . . 56

Additional Documentation

. . . . . . . . . . . . . . . . 56

2 Switch Feature Overview . . . . . . . . . . . . 57

System Management Features . . . . . . . . . . . . . 58

Multiple Management Options

. . . . . . . . . . . 58

System Time Management . . . . . . . . . . . . . 58

Log Messages

. . . . . . . . . . . . . . . . . . . 59

Integrated DHCP Server

. . . . . . . . . . . . . . 59

Management of Basic Network Information . . . . 59

IPv6 Management Features

. . . . . . . . . . . . 60

Dual Software Images

. . . . . . . . . . . . . . . 60

File Management . . . . . . . . . . . . . . . . . . 60

Switch Database Management Templates

. . . . 61

Automatic Installation of Firmware and

Configuration . . . . . . . . . . . . . . . . . . . . 61

sFlow

. . . . . . . . . . . . . . . . . . . . . . . . 62

SNMP Alarms and Trap Logs

. . . . . . . . . . . . 62

CDP Interoperability Through ISDP . . . . . . . . 63

Remote Monitoring (RMON)

. . . . . . . . . . . . 63

N3000 Series Access and Aggregation

Firmware Images . . . . . . . . . . . . . . . . . . 63

4 Contents

Stacking Features . . . . . . . . . . . . . . . . . . . . 65

High Stack Count

. . . . . . . . . . . . . . . . . . 65

Single IP Management

. . . . . . . . . . . . . . . 65

Master Failover with Transparent Transition. . . . 65

Nonstop Forwarding on the Stack

. . . . . . . . . 66

Hot Add/Delete and Firmware

Synchronization. . . . . . . . . . . . . . . . . . . 66

Security Features . . . . . . . . . . . . . . . . . . . . 67

Configurable Access and Authentication

Profiles

. . . . . . . . . . . . . . . . . . . . . . . 67

Password-Protected Management Access

. . . . 67

Strong Password Enforcement

. . . . . . . . . . . 67

TACACS+ Client . . . . . . . . . . . . . . . . . . . 67

RADIUS Support

. . . . . . . . . . . . . . . . . . 68

SSH/SSL

. . . . . . . . . . . . . . . . . . . . . . . 68

Inbound Telnet Control . . . . . . . . . . . . . . . 68

Denial of Service

. . . . . . . . . . . . . . . . . . 68

Port Protection

. . . . . . . . . . . . . . . . . . . 69

Captive Portal

. . . . . . . . . . . . . . . . . . . . 70

802.1X Authentication (IEEE 802.1X)

. . . . . . . . 70

MAC-Based 802.1X Authentication . . . . . . . . . 71

802.1X Monitor Mode

. . . . . . . . . . . . . . . . 71

MAC-Based Port Security

. . . . . . . . . . . . . 71

Access Control Lists (ACLs) . . . . . . . . . . . . 72

Time-Based ACLs

. . . . . . . . . . . . . . . . . . 72

IP Source Guard (IPSG)

. . . . . . . . . . . . . . . 72

DHCP Snooping . . . . . . . . . . . . . . . . . . . 73

Dynamic ARP Inspection

. . . . . . . . . . . . . . 73

Protected Ports (Private VLAN Edge)

. . . . . . . . 73

Green Technology Features

. . . . . . . . . . . . . . . 74

Energy Detect Mode

. . . . . . . . . . . . . . . . 74

Energy Efficient Ethernet

. . . . . . . . . . . . . . 74

Contents 5

Power Utilization Reporting . . . . . . . . . . . . 74

Power over Ethernet (PoE) Plus Features

. . . . . . . . 75

Power Over Ethernet (PoE) Plus

Configuration

. . . . . . . . . . . . . . . . . . . . 75

PoE Plus Support

. . . . . . . . . . . . . . . . . . 75

UPOE Support. . . . . . . . . . . . . . . . . . . . 75

Switching Features . . . . . . . . . . . . . . . . . . . 76

Flow Control Support (IEEE 802.3x)

. . . . . . . . . 76

Head of Line Blocking Prevention . . . . . . . . . 76

Alternate Store and Forward (ASF)

. . . . . . . . . 76

Jumbo Frames Support

. . . . . . . . . . . . . . . 76

Auto-MDI/MDIX Support . . . . . . . . . . . . . . 77

VLAN-Aware MAC-based Switching

. . . . . . . . 77

Back Pressure Support

. . . . . . . . . . . . . . . 77

Auto-negotiation . . . . . . . . . . . . . . . . . . 77

Storm Control

. . . . . . . . . . . . . . . . . . . . 78

Port Mirroring

. . . . . . . . . . . . . . . . . . . . 78

Static and Dynamic MAC Address Tables . . . . . 78

Link Layer Discovery Protocol (LLDP)

. . . . . . . 79

Link Layer Discovery Protocol (LLDP) for

Media Endpoint Devices . . . . . . . . . . . . . . 79

Connectivity Fault Management

(IEEE 802.1ag)

. . . . . . . . . . . . . . . . . . . . 79

Priority-based Flow Control (PFC) . . . . . . . . . 79

Data Center Bridging Exchange (DBCx)

Protocol

. . . . . . . . . . . . . . . . . . . . . . . 80

Enhanced Transmission Selection . . . . . . . . . 80

Cisco Protocol Filtering

. . . . . . . . . . . . . . . 81

DHCP Layer-2 Relay

. . . . . . . . . . . . . . . . 81

Virtual Local Area Network Supported Features

. . . . 82

VLAN Support

. . . . . . . . . . . . . . . . . . . . 82

Port-Based VLANs

. . . . . . . . . . . . . . . . . 82

6 Contents

IP Subnet-based VLAN . . . . . . . . . . . . . . . 82

MAC-based VLAN

. . . . . . . . . . . . . . . . . . 82

IEEE 802.1v Protocol-Based VLANs. . . . . . . . . 82

GARP and GVRP Support

. . . . . . . . . . . . . . 82

Voice VLAN

. . . . . . . . . . . . . . . . . . . . . 83

Guest VLAN . . . . . . . . . . . . . . . . . . . . . 83

Unauthorized VLAN

. . . . . . . . . . . . . . . . . 83

Double VLANs

. . . . . . . . . . . . . . . . . . . . 83

Spanning Tree Protocol Features

. . . . . . . . . . . . 84

Spanning Tree Protocol (STP)

. . . . . . . . . . . 84

Spanning Tree Port Settings

. . . . . . . . . . . . 84

Rapid Spanning Tree . . . . . . . . . . . . . . . . 84

Multiple Spanning Tree

. . . . . . . . . . . . . . . 84

Bridge Protocol Data Unit (BPDU) Guard

. . . . . . 85

BPDU Filtering

. . . . . . . . . . . . . . . . . . . 85

RSTP-PV and STP-PV

. . . . . . . . . . . . . . . . 85

Link Aggregation Features

. . . . . . . . . . . . . . . . 86

Link Aggregation

. . . . . . . . . . . . . . . . . . 86

Link Aggregate Control Protocol (LACP)

. . . . . . 87

Multi-Switch LAG (MLAG) . . . . . . . . . . . . . 87

Routing Features . . . . . . . . . . . . . . . . . . . . . 88

Address Resolution Protocol (ARP) Table

Management

. . . . . . . . . . . . . . . . . . . . 88

VLAN Routing

. . . . . . . . . . . . . . . . . . . . 88

IP Configuration

. . . . . . . . . . . . . . . . . . . 88

Open Shortest Path First (OSPF) . . . . . . . . . . 88

Border Gateway Protocol (BGP)

. . . . . . . . . . 89

Virtual Routing and Forwarding (VRF)

. . . . . . . 89

BOOTP/DHCP Relay Agent . . . . . . . . . . . . . 90

IP Helper and UDP Relay . . . . . . . . . . . . . . 90

Routing Information Protocol . . . . . . . . . . . . 90

Router Discovery

. . . . . . . . . . . . . . . . . . 90

Contents 7

Routing Table . . . . . . . . . . . . . . . . . . . . 90

Virtual Router Redundancy Protocol (VRRP)

. . . . 91

Tunnel and Loopback Interfaces . . . . . . . . . . 91

IPv6 Routing Features . . . . . . . . . . . . . . . . . . 92

IPv6 Configuration

. . . . . . . . . . . . . . . . . 92

IPv6 Routes . . . . . . . . . . . . . . . . . . . . . 92

OSPFv3

. . . . . . . . . . . . . . . . . . . . . . . 92

DHCPv6

. . . . . . . . . . . . . . . . . . . . . . . 92

Quality of Service (QoS) Features

. . . . . . . . . . . . 93

Differentiated Services (DiffServ)

. . . . . . . . . 93

Class Of Service (CoS)

. . . . . . . . . . . . . . . 93

Auto Voice over IP (VoIP). . . . . . . . . . . . . . 93

Internet Small Computer System Interface

(iSCSI) Optimization

. . . . . . . . . . . . . . . . . 94

Layer-2 Multicast Features

. . . . . . . . . . . . . . . 94

MAC Multicast Support

. . . . . . . . . . . . . . . 94

IGMP Snooping

. . . . . . . . . . . . . . . . . . . 94

IGMP Snooping Querier . . . . . . . . . . . . . . 95

MLD Snooping

. . . . . . . . . . . . . . . . . . . 95

Multicast VLAN Registration

. . . . . . . . . . . . 95

Layer-3 Multicast Features

. . . . . . . . . . . . . . . 96

Distance Vector Multicast Routing Protocol

. . . . 96

Internet Group Management Protocol

. . . . . . . 96

IGMP Proxy . . . . . . . . . . . . . . . . . . . . . 96

Protocol Independent Multicast—Dense

Mode

. . . . . . . . . . . . . . . . . . . . . . . . 96

Protocol Independent Multicast—Sparse

Mode . . . . . . . . . . . . . . . . . . . . . . . . 97

Protocol Independent Multicast—Source

Specific Multicast . . . . . . . . . . . . . . . . . 97

Protocol Independent Multicast IPv6 Support

. . . 97

MLD/MLDv2 (RFC2710/RFC3810)

. . . . . . . . . . 97

8 Contents

3 Hardware Overview . . . . . . . . . . . . . . . . 99

Dell Networking N1500 Series Switch

Hardware. . . . . . . . . . . . . . . . . . . . . . . . . 99

Front Panel

. . . . . . . . . . . . . . . . . . . . . 99

Back Panel

. . . . . . . . . . . . . . . . . . . . 103

LED Definitions . . . . . . . . . . . . . . . . . . 104

Power Consumption for PoE Switches

. . . . . . 107

Dell Networking N2000 Series Switch

Hardware

. . . . . . . . . . . . . . . . . . . . . . . . 109

Front Panel

. . . . . . . . . . . . . . . . . . . . 109

Back Panel

. . . . . . . . . . . . . . . . . . . . 112

LED Definitions . . . . . . . . . . . . . . . . . . 114

Power Consumption for PoE Switches

. . . . . . 117

Dell Networking N3000 Series Switch

Hardware

. . . . . . . . . . . . . . . . . . . . . . . . 119

Front Panel

. . . . . . . . . . . . . . . . . . . . 119

Back Panel

. . . . . . . . . . . . . . . . . . . . 123

LED Definitions . . . . . . . . . . . . . . . . . . 126

Power Consumption for PoE Switches

. . . . . . 130

Dell Networking N4000 Series Switch

Hardware

. . . . . . . . . . . . . . . . . . . . . . . . 132

Front Panel

. . . . . . . . . . . . . . . . . . . . 132

Back Panel

. . . . . . . . . . . . . . . . . . . . 136

LED Definitions . . . . . . . . . . . . . . . . . . 138

Switch MAC Addresses . . . . . . . . . . . . . . . . 142

Contents 9

4 Using Dell OpenManage Switch

Administrator

. . . . . . . . . . . . . . . . . . . . 145

About Dell OpenManage Switch Administrator . . . . 145

Starting the Application

. . . . . . . . . . . . . . . . . 146

Understanding the Interface. . . . . . . . . . . . . . . 147

Using the Switch Administrator Buttons and Links

. . . 149

Defining Fields

. . . . . . . . . . . . . . . . . . . . . . 150

Understanding the Device View. . . . . . . . . . . . . 150

Using the Device View Port Features

. . . . . . . 150

Using the Device View Switch Locator

Feature . . . . . . . . . . . . . . . . . . . . . . . 151

5 Using the Command-Line Interface. . . . 153

Accessing the Switch Through the CLI . . . . . . . . . 153

Console Connection

. . . . . . . . . . . . . . . . 153

Telnet Connection

. . . . . . . . . . . . . . . . . 154

Understanding Command Modes

. . . . . . . . . . . . 155

Entering CLI Commands . . . . . . . . . . . . . . . . . 157

Using the Question Mark to Get Help

. . . . . . . 157

Using Command Completion . . . . . . . . . . . . 158

Entering Abbreviated Commands

. . . . . . . . . 158

Negating Commands

. . . . . . . . . . . . . . . . 158

Command Output Paging . . . . . . . . . . . . . . 158

Understanding Error Messages

. . . . . . . . . . 159

Recalling Commands from the History Buffer

. . . 159

10 Contents

6 Default Settings . . . . . . . . . . . . . . . . . . . 161

7 Setting the IP Address and Other

Basic Network Information

. . . . . . . . . . 165

IP Address and Network Information Overview . . . 165

What Is the Basic Network Information?

. . . . . 165

Why Is Basic Network Information

Needed?. . . . . . . . . . . . . . . . . . . . . . 166

How Is Basic Network Information

Configured?

. . . . . . . . . . . . . . . . . . . . 167

What Is Out-of-Band Management and

In-Band Management? . . . . . . . . . . . . . . 167

Default Network Information

. . . . . . . . . . . . . 169

Configuring Basic Network Information (Web) . . . . 171

Out-of-Band Interface

. . . . . . . . . . . . . . 171

IP Interface Configuration (Default VLAN

IP Address) . . . . . . . . . . . . . . . . . . . . 172

Route Entry Configuration (Switch Default

Gateway) . . . . . . . . . . . . . . . . . . . . . 174

Domain Name Server

. . . . . . . . . . . . . . . 176

Default Domain Name

. . . . . . . . . . . . . . 177

Host Name Mapping . . . . . . . . . . . . . . . 178

Dynamic Host Name Mapping

. . . . . . . . . . 179

Configuring Basic Network Information (CLI)

. . . . . 180

Enabling the DHCP Client on the OOB Port

. . . . 180

Enabling the DHCP Client on the Default

VLAN

. . . . . . . . . . . . . . . . . . . . . . . 180

Managing DHCP Leases . . . . . . . . . . . . . 181

Configuring Static Network Information on

the OOB Port

. . . . . . . . . . . . . . . . . . . 182

Configuring Static Network Information

on the Default VLAN

. . . . . . . . . . . . . . . 183

Contents 11

Configuring and Viewing Additional

Network Information . . . . . . . . . . . . . . . . 184

Basic Network Information Configuration

Examples

. . . . . . . . . . . . . . . . . . . . . . . . . 186

Configuring Network Information Using

the OOB Port

. . . . . . . . . . . . . . . . . . . . 186

Configuring Network Information Using the

Serial Interface

. . . . . . . . . . . . . . . . . . . 187

8 Managing QSFP Ports . . . . . . . . . . . . . . 191

9 Stacking. . . . . . . . . . . . . . . . . . . . . . . . . 193

Stacking Overview . . . . . . . . . . . . . . . . . . . 193

Dell Networking N1500, N2000, N3000,

and N4000 Stacking Compatibility

. . . . . . . . . 197

How is the Stack Master Selected? . . . . . . . . 198

Adding a Switch to the Stack

. . . . . . . . . . . . 199

Removing a Switch from the Stack

. . . . . . . . . 200

How is the Firmware Updated on the Stack? . . . 201

What is Stacking Standby?

. . . . . . . . . . . . . 201

What is Nonstop Forwarding?

. . . . . . . . . . . 201

Switch Stack MAC Addressing and Stack

Design Considerations . . . . . . . . . . . . . . . 205

NSF Network Design Considerations

. . . . . . . 205

Why is Stacking Needed? . . . . . . . . . . . . . 206

Default Stacking Values . . . . . . . . . . . . . . . . . 206

Managing and Monitoring the Stack (Web)

. . . . . . 207

Unit Configuration

. . . . . . . . . . . . . . . . . 207

Stack Summary

. . . . . . . . . . . . . . . . . . . 208

Stack Firmware Synchronization. . . . . . . . . . 209

12 Contents

Supported Switches . . . . . . . . . . . . . . . 210

Stack Port Summary

. . . . . . . . . . . . . . . 211

Stack Port Counters. . . . . . . . . . . . . . . . 212

Stack Port Diagnostics

. . . . . . . . . . . . . . 212

NSF Summary

. . . . . . . . . . . . . . . . . . . 213

Checkpoint Statistics . . . . . . . . . . . . . . . 214

Managing the Stack (CLI) . . . . . . . . . . . . . . . 215

Configuring Stack Member, Stack Port, and

NSF Settings

. . . . . . . . . . . . . . . . . . . 215

Viewing and Clearing Stacking and NSF

Information

. . . . . . . . . . . . . . . . . . . . 217

Connecting to the Management Console

from a Stack Member. . . . . . . . . . . . . . . 217

Stacking and NSF Usage Scenarios

. . . . . . . . . . 218

Basic Failover

. . . . . . . . . . . . . . . . . . . 218

Preconfiguring a Stack Member

. . . . . . . . . 220

NSF in the Data Center

. . . . . . . . . . . . . . 222

NSF and VoIP

. . . . . . . . . . . . . . . . . . . 223

NSF and DHCP Snooping

. . . . . . . . . . . . . 224

NSF and the Storage Access Network . . . . . . 225

NSF and Routed Access . . . . . . . . . . . . . 227

10 Authentication, Authorization, and

Accounting . . . . . . . . . . . . . . . . . . . . . . 229

AAA Introduction. . . . . . . . . . . . . . . . . . . . 229

Methods

. . . . . . . . . . . . . . . . . . . . . . 230

Method Lists

. . . . . . . . . . . . . . . . . . . 231

Access Lines

. . . . . . . . . . . . . . . . . . . 232

Access Lines (AAA). . . . . . . . . . . . . . . . 233

Access Lines (Non-AAA)

. . . . . . . . . . . . . 234

Contents 13

Authentication . . . . . . . . . . . . . . . . . . . . . . 235

Authentication Types

. . . . . . . . . . . . . . . . 235

Authentication Manager

. . . . . . . . . . . . . . 236

Using RADIUS . . . . . . . . . . . . . . . . . . . 241

Using TACACS+ Servers to Control

Management Access

. . . . . . . . . . . . . . . . 246

Authentication Examples . . . . . . . . . . . . . . 248

Public Key SSH Authentication Example

. . . . . . 256

Associating a User With an SSH Key

. . . . . . . 263

Authorization

. . . . . . . . . . . . . . . . . . . . . . . 265

Exec Authorization Capabilities

. . . . . . . . . . 265

Authorization Examples

. . . . . . . . . . . . . . . 267

RADIUS Change of Authorization. . . . . . . . . . 269

TACACS Authorization

. . . . . . . . . . . . . . . 273

Accounting

. . . . . . . . . . . . . . . . . . . . . . . . 277

RADIUS Accounting

. . . . . . . . . . . . . . . . 277

IEEE 802.1X . . . . . . . . . . . . . . . . . . . . . . . . 279

What is IEEE 802.1X?

. . . . . . . . . . . . . . . . 279

What are the 802.1X Port Authentication

Modes? . . . . . . . . . . . . . . . . . . . . . . . 280

What is MAC-Based 802.1X Authentication?

. . . 281

What is the Role of 802.1X in VLAN

Assignment? . . . . . . . . . . . . . . . . . . . . 282

What is Monitor Mode?

. . . . . . . . . . . . . . 285

How Does the Authentication Server Assign

DiffServ Policy? . . . . . . . . . . . . . . . . . . . 286

What is the Internal Authentication Server?

. . . . 287

Default 802.1X Values. . . . . . . . . . . . . . . . 287

Configuring IEEE 802.1X (Web)

. . . . . . . . . . . 288

Captive Portal

. . . . . . . . . . . . . . . . . . . . . . 313

Captive Portal Overview

. . . . . . . . . . . . . . 313

Default Captive Portal Behavior and Settings

. . . 321

14 Contents

Configuring Captive Portal (Web). . . . . . . . . 323

Configuring Captive Portal (CLI)

. . . . . . . . . 341

Captive Portal Configuration Example . . . . . . 347

In Case Of Problems in Captive Portal

Deployment

. . . . . . . . . . . . . . . . . . . . 351

11 Monitoring and Logging System

Information . . . . . . . . . . . . . . . . . . . . . . 353

System Monitoring Overview . . . . . . . . . . . . . 353

What System Information Is Monitored?

. . . . . 353

Why Is System Information Needed?. . . . . . . 354

Where Are Log Messages Sent?

. . . . . . . . . 354

What Are the Severity Levels?

. . . . . . . . . . 355

What Are the System Startup and Operation

Logs?

. . . . . . . . . . . . . . . . . . . . . . . 355

What Is the Log Message Format? . . . . . . . . 356

What Factors Should Be Considered When

Configuring Logging?

. . . . . . . . . . . . . . . 357

Default Log Settings

. . . . . . . . . . . . . . . . . . 358

Monitoring System Information and Configuring

Logging (Web)

. . . . . . . . . . . . . . . . . . . . . 359

Device Information

. . . . . . . . . . . . . . . . 359

System Health

. . . . . . . . . . . . . . . . . . . 361

System Resources

. . . . . . . . . . . . . . . . 362

Unit Power Usage History

. . . . . . . . . . . . 363

Integrated Cable Test for Copper Cables. . . . . 364

Optical Transceiver Diagnostics

. . . . . . . . . 365

Log Global Settings

. . . . . . . . . . . . . . . . 367

RAM Log . . . . . . . . . . . . . . . . . . . . . 368

Log File

. . . . . . . . . . . . . . . . . . . . . . 369

Syslog Server

. . . . . . . . . . . . . . . . . . . 369

Email Alert Global Configuration

. . . . . . . . . 372

Contents 15

Email Alert Mail Server Configuration . . . . . . . 372

Email Alert Subject Configuration

. . . . . . . . . 374

Email Alert To Address Configuration . . . . . . . 375

Email Alert Statistics

. . . . . . . . . . . . . . . . 376

Monitoring System Information and Configuring

Logging (CLI)

. . . . . . . . . . . . . . . . . . . . . . . 377

Viewing System Information and Enabling

the Locator LED

. . . . . . . . . . . . . . . . . . . 377

Running Cable Diagnostics . . . . . . . . . . . . . 377

Configuring Local Logging

. . . . . . . . . . . . . 379

Configuring Remote Logging

. . . . . . . . . . . . 380

Configuring Mail Server Settings

. . . . . . . . . . 381

Configuring Email Alerts for Log Messages

. . . . 382

Logging Configuration Examples . . . . . . . . . . . . 384

Configuring Local and Remote Logging

. . . . . . 384

Configuring Email Alerting . . . . . . . . . . . . . 386

12 Managing General System Settings . . . 389

System Settings Overview. . . . . . . . . . . . . . . . 389

Why Does System Information Need to Be

Configured?

. . . . . . . . . . . . . . . . . . . . . 391

What Are SDM Templates?

. . . . . . . . . . . . 391

Why is the System Time Needed?

. . . . . . . . . 394

How Does SNTP Work? . . . . . . . . . . . . . . 394

What Configuration Is Required for Plug-In

Modules?

. . . . . . . . . . . . . . . . . . . . . . 395

What Are the Key PoE Plus Features for the

Dell Networking N1524P/N1548P, N2024P/

N2048P, and N3024P/N3048P Switches? . . . . . . 396

Default General System Information

. . . . . . . . . . 397

Power Management in Guard Band

. . . . . . . . 397

16 Contents

Dynamic/Static Power Management Mode . . . 398

Class-Based Power Management Mode

. . . . . 398

Configuring General System Settings (Web) . . . 398

System Information

. . . . . . . . . . . . . . . . 398

CLI Banner

. . . . . . . . . . . . . . . . . . . . 402

SDM Template Preference

. . . . . . . . . . . . 403

Clock

. . . . . . . . . . . . . . . . . . . . . . . 404

SNTP Global Settings . . . . . . . . . . . . . . . 405

SNTP Authentication

. . . . . . . . . . . . . . . 406

SNTP Server

. . . . . . . . . . . . . . . . . . . 408

Summer Time Configuration

. . . . . . . . . . . 411

Time Zone Configuration

. . . . . . . . . . . . . 412

Card Configuration

. . . . . . . . . . . . . . . . 413

Slot Summary

. . . . . . . . . . . . . . . . . . . 414

Supported Cards . . . . . . . . . . . . . . . . . 415

Power Over Ethernet Global Configuration

(Dell Networking N1524P/N1548P, N2024P/

N2048P, and N3024P/N3048P Only)

. . . . . . . . 416

Power Over Ethernet Interface Configuration

(Dell Networking N1524P/N1548P, N2024P/

N2048P, and N3024P/N3048P Only)

. . . . . . . . 417

Configuring System Settings (CLI)

. . . . . . . . . . . 419

Configuring System Information

. . . . . . . . . 419

Configuring the Banner

. . . . . . . . . . . . . . 420

Managing the SDM Template

. . . . . . . . . . 421

Configuring SNTP Authentication and an

SNTP Server

. . . . . . . . . . . . . . . . . . . 421

Setting the System Time and Date Manually

. . . 423

Configuring the Expansion Slots (Dell

Networking N3000 Series Only)

. . . . . . . . . . 424

Viewing Slot Information (Dell Networking

N4000 Series Only) . . . . . . . . . . . . . . . . 425

Configuring PoE Settings (Dell Networking

N1524P/N1548P, N2024P/N2048P, and N3024P/

N3048P Only) . . . . . . . . . . . . . . . . . . . 425

Contents 17

General System Settings Configuration

Examples. . . . . . . . . . . . . . . . . . . . . . . . . 427

Configuring System and Banner Information

. . . 427

Configuring SNTP. . . . . . . . . . . . . . . . . . 430

Configuring the Time Manually. . . . . . . . . . . 432

13 SNMP. . . . . . . . . . . . . . . . . . . . . . . . . . . 433

SNMP Overview . . . . . . . . . . . . . . . . . . . . . 433

What Is SNMP?

. . . . . . . . . . . . . . . . . . . 433

What Are SNMP Traps?

. . . . . . . . . . . . . . 434

Why Is SNMP Needed? . . . . . . . . . . . . . . 435

Default SNMP Values . . . . . . . . . . . . . . . . . . 435

Configuring SNMP (Web)

. . . . . . . . . . . . . . . . 437

SNMP Global Parameters

. . . . . . . . . . . . . 437

SNMP View Settings

. . . . . . . . . . . . . . . . 438

Access Control Group

. . . . . . . . . . . . . . . 440

SNMPv3 User Security Model (USM)

. . . . . . . 442

Communities . . . . . . . . . . . . . . . . . . . . 445

Notification Filter

. . . . . . . . . . . . . . . . . . 447

Notification Recipients

. . . . . . . . . . . . . . . 448

Trap Flags

. . . . . . . . . . . . . . . . . . . . . . 450

OSPFv2 Trap Flags

. . . . . . . . . . . . . . . . . 451

OSPFv3 Trap Flags . . . . . . . . . . . . . . . . . 452

Trap Log

. . . . . . . . . . . . . . . . . . . . . . . 453

Configuring SNMP (CLI)

. . . . . . . . . . . . . . . . . 455

Configuring the SNMPv3 Engine ID

. . . . . . . . 455

Configuring SNMP Views, Groups, and Users

. . . 456

Configuring Communities

. . . . . . . . . . . . . . 459

Configuring SNMP Notifications (Traps

and Informs) . . . . . . . . . . . . . . . . . . . . 461

18 Contents

SNMP Configuration Examples . . . . . . . . . . . . 464

Configuring SNMPv1 and SNMPv2

. . . . . . . . 464

Configuring SNMPv3

. . . . . . . . . . . . . . . 465

14 Images and File Management . . . . . . . . 469

Image and File Management Overview . . . . . . . . 469

What Files Can Be Managed?

. . . . . . . . . . 469

Why Is File Management Needed?

. . . . . . . . 471

What Methods Are Supported for File

Management?. . . . . . . . . . . . . . . . . . . 474

What Factors Should Be Considered When

Managing Files?. . . . . . . . . . . . . . . . . . 474

How Is the Running Configuration Saved?

. . . . 477

N3000 Dual Images

. . . . . . . . . . . . . . . . . . . 477

Access Router/Switch Role

. . . . . . . . . . . . 477

Aggregation Router Role

. . . . . . . . . . . . . 478

Managing Images and Files (Web)

. . . . . . . . . . 479

File System

. . . . . . . . . . . . . . . . . . . . 479

Active Images

. . . . . . . . . . . . . . . . . . . 480

USB Flash Drive

. . . . . . . . . . . . . . . . . . 481

File Download . . . . . . . . . . . . . . . . . . . 482

File Upload

. . . . . . . . . . . . . . . . . . . . 484

Copy Files

. . . . . . . . . . . . . . . . . . . . . 486

Managing Images and Files (CLI) . . . . . . . . . . . 487

Downloading and Activating a New Image

(TFTP)

. . . . . . . . . . . . . . . . . . . . . . . 487

Managing Files in Internal Flash

. . . . . . . . . 489

Managing Files on a USB Flash Device

. . . . . 490

Uploading a Configuration File (SCP) . . . . . . . 490

Managing Configuration Scripts (SFTP) . . . . . 491

Contents 19

File and Image Management Configuration

Examples. . . . . . . . . . . . . . . . . . . . . . . . . 492

Upgrading the Firmware

. . . . . . . . . . . . . . 492

Managing Configuration Scripts . . . . . . . . . . 495

Managing Files by Using the USB Flash Drive

. . . 497

15 DHCP and USB Auto-Configuration. . . . 499

Auto Configuration Overview . . . . . . . . . . . . . . 499

What Is USB Auto Configuration?

. . . . . . . . . 500

What Files Does USB Auto Configuration

Use?

. . . . . . . . . . . . . . . . . . . . . . . . . 500

How Does USB Auto Configuration Use the

Files on the USB Device? . . . . . . . . . . . . . . 501

What Is the Setup File Format?

. . . . . . . . . . . 503

What Is the DHCP Auto Configuration

Process? . . . . . . . . . . . . . . . . . . . . . . 503

Monitoring and Completing the DHCP

Auto Configuration Process . . . . . . . . . . . . 509

What Are the Dependencies for DHCP

Auto Configuration?

. . . . . . . . . . . . . . . . 510

Default Auto Configuration Values

. . . . . . . . . . . 511

Managing Auto Configuration (Web)

. . . . . . . . . . 512

Auto-Install Configuration

. . . . . . . . . . . . . 512

Managing Auto Configuration (CLI) . . . . . . . . . . . 513

Managing Auto Configuration

. . . . . . . . . . . 513

Auto Configuration Example

. . . . . . . . . . . . . . . 514

Enabling USB Auto Configuration and Auto

Image Download

. . . . . . . . . . . . . . . . . . 514

Enabling DHCP Auto Configuration and Auto

Image Download . . . . . . . . . . . . . . . . . . 515

Easy Firmware Upgrade via USB

. . . . . . . . . . 517

20 Contents

16 Monitoring Switch Traffic . . . . . . . . . . . 519

Traffic Monitoring Overview. . . . . . . . . . . . . . 519

What is sFlow Technology?

. . . . . . . . . . . . 519

What is RMON?

. . . . . . . . . . . . . . . . . . 522

What is Port Mirroring?

. . . . . . . . . . . . . . 523

Port Mirroring Behaviors . . . . . . . . . . . . . 524

Remote Capture

. . . . . . . . . . . . . . . . . . 526

Why is Traffic Monitoring Needed?

. . . . . . . 526

Default Traffic Monitoring Values

. . . . . . . . . . . 526

Monitoring Switch Traffic (Web)

. . . . . . . . . . . 527

sFlow Agent Summary

. . . . . . . . . . . . . . 527

sFlow Receiver Configuration

. . . . . . . . . . 528

sFlow Sampler Configuration

. . . . . . . . . . . 529

sFlow Poll Configuration . . . . . . . . . . . . . 530

Interface Statistics

. . . . . . . . . . . . . . . . 531

Etherlike Statistics

. . . . . . . . . . . . . . . . 532

GVRP Statistics . . . . . . . . . . . . . . . . . . 533

EAP Statistics

. . . . . . . . . . . . . . . . . . . 534

Utilization Summary

. . . . . . . . . . . . . . . . 535

Counter Summary. . . . . . . . . . . . . . . . . 536

Switchport Statistics

. . . . . . . . . . . . . . . 537

RMON Statistics

. . . . . . . . . . . . . . . . . 538

RMON History Control Statistics . . . . . . . . . 539

RMON History Table . . . . . . . . . . . . . . . 541

RMON Event Control . . . . . . . . . . . . . . . 542

RMON Event Log

. . . . . . . . . . . . . . . . . 544

RMON Alarms

. . . . . . . . . . . . . . . . . . . 545

Port Statistics . . . . . . . . . . . . . . . . . . . 547

LAG Statistics

. . . . . . . . . . . . . . . . . . . 548

Port Mirroring

. . . . . . . . . . . . . . . . . . . 549

Monitoring Switch Traffic (CLI) . . . . . . . . . . . . 551

Configuring sFlow

. . . . . . . . . . . . . . . . . 551

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Dell PowerSwitch N3000 Series User guide

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