Dell PowerEdge M420 User manual

Dell PowerConnect
M6220, M6348, M8024, and
M8024-k Switch
User’s Configuration
Guide
Regulatory Models: PCM6220, PCM6348,
PCM8024, and PCM8024-k

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, PowerEdge™, 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: PCM6220, PCM6348, PCM8024, and PCM8024-k
March 2011 Rev. A00

Contents 3
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . 49
About This Document . . . . . . . . . . . . . . . . . . 50
Audience . . . . . . . . . . . . . . . . . . . . . . . . . 50
Document Conventions . . . . . . . . . . . . . . . . . 50
Additional Documentation. . . . . . . . . . . . . . . . 51
2 Switch Features . . . . . . . . . . . . . . . . . . . 53
System Management Features . . . . . . . . . . . . . 54
Multiple Management Options . . . . . . . . . . . 54
Simple Mode . . . . . . . . . . . . . . . . . . . . 54
Port Aggregator. . . . . . . . . . . . . . . . . . . 55
System Time Management . . . . . . . . . . . . . 55
Log Messages . . . . . . . . . . . . . . . . . . . 55
Integrated DHCP Server . . . . . . . . . . . . . . 56
Management of Basic Network Information. . . . 56
IPv6 Management Features . . . . . . . . . . . . 56
Dual Software Images . . . . . . . . . . . . . . . 56
File Management . . . . . . . . . . . . . . . . . . 57
Switch Database Management Templates. . . . . 57
Automatic Installation of Firmware and
Configuration . . . . . . . . . . . . . . . . . . . . 57
sFlow . . . . . . . . . . . . . . . . . . . . . . . . 58
SNMP Alarms and Trap Logs . . . . . . . . . . . . 58
CDP Interoperability through ISDP . . . . . . . . . 58
Remote Monitoring (RMON) . . . . . . . . . . . . 58

4Contents
Stacking Features (PCM6220 and PCM6348 Only). . . . 59
High Port Count . . . . . . . . . . . . . . . . . . . 59
Single IP Management . . . . . . . . . . . . . . . 59
Automatic Firmware Upgrade for New Stack
Members . . . . . . . . . . . . . . . . . . . . . . 59
Stacking Compatibility with the
PowerConnect 7000 Series . . . . . . . . . . . . . 59
Master Failover with Transparent Transition . . . . 60
Nonstop Forwarding on the Stack . . . . . . . . . 60
Hot Add/Delete and Firmware
Synchronization . . . . . . . . . . . . . . . . . . . 60
Security Features . . . . . . . . . . . . . . . . . . . . 60
Configurable Access and Authentication
Profiles . . . . . . . . . . . . . . . . . . . . . . . 60
Password-Protected Management Access . . . . 61
Strong Password Enforcement . . . . . . . . . . . 61
TACACS+ Client . . . . . . . . . . . . . . . . . . . 61
RADIUS Support . . . . . . . . . . . . . . . . . . 61
SSH/SSL. . . . . . . . . . . . . . . . . . . . . . . 62
Inbound Telnet Control . . . . . . . . . . . . . . . 62
Denial of Service . . . . . . . . . . . . . . . . . . 62
Captive Portal . . . . . . . . . . . . . . . . . . . . 62
Dot1x Authentication (IEEE 802.1X) . . . . . . . . . 63
MAC-Based 802.1X Authentication . . . . . . . . . 63
Dot1x Monitor Mode . . . . . . . . . . . . . . . . 63
MAC-Based Port Security . . . . . . . . . . . . . 63
Access Control Lists (ACL) . . . . . . . . . . . . . 64
Time-Based ACLs . . . . . . . . . . . . . . . . . . 64
IP Source Guard (IPSG). . . . . . . . . . . . . . . 64
DHCP Snooping . . . . . . . . . . . . . . . . . . . 65
Dynamic ARP Inspection . . . . . . . . . . . . . . 65
Protected Ports (Private VLAN Edge). . . . . . . . 65

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

6Contents
Rapid Spanning Tree . . . . . . . . . . . . . . . . 72
Multiple Spanning Tree . . . . . . . . . . . . . . . 72
Bridge Protocol Data Unit (BPDU) Guard. . . . . . 73
BPDU Filtering . . . . . . . . . . . . . . . . . . . 73
Link Aggregation Features . . . . . . . . . . . . . . . . 73
Link Aggregation . . . . . . . . . . . . . . . . . . 73
Link Aggregate Control Protocol (LACP) . . . . . . 73
Routing Features . . . . . . . . . . . . . . . . . . . . . 74
Address Resolution Protocol (ARP) Table
Management . . . . . . . . . . . . . . . . . . . . 74
VLAN Routing . . . . . . . . . . . . . . . . . . . . 74
IP Configuration . . . . . . . . . . . . . . . . . . . 74
Open Shortest Path First (OSPF) . . . . . . . . . . 74
BOOTP/DHCP Relay Agent . . . . . . . . . . . . . 75
IP Helper and UDP Relay . . . . . . . . . . . . . . 75
Routing Information Protocol . . . . . . . . . . . . 75
Router Discovery . . . . . . . . . . . . . . . . . . 75
Routing Table . . . . . . . . . . . . . . . . . . . . 75
Virtual Router Redundancy Protocol (VRRP) . . . . 76
Tunnel and Loopback Interfaces . . . . . . . . . . 76
IPv6 Routing Features . . . . . . . . . . . . . . . . . . 76
IPv6 Configuration . . . . . . . . . . . . . . . . . 76
IPv6 Routes . . . . . . . . . . . . . . . . . . . . . 77
OSPFv3 . . . . . . . . . . . . . . . . . . . . . . . 77
DHCPv6 . . . . . . . . . . . . . . . . . . . . . . . 77
Quality of Service (QoS) Features . . . . . . . . . . . . 78
Differentiated Services (DiffServ) . . . . . . . . . 78
Class Of Service (CoS) . . . . . . . . . . . . . . . 78
Auto Voice over IP (VoIP) . . . . . . . . . . . . . . 78

Contents 7
Priority-based Flow Control (PFC) . . . . . . . . . 79
Internet Small Computer System Interface
(iSCSI) Optimization. . . . . . . . . . . . . . . . . 79
Layer 2 Multicast Features . . . . . . . . . . . . . . . 80
MAC Multicast Support. . . . . . . . . . . . . . . 80
IGMP Snooping . . . . . . . . . . . . . . . . . . . 80
IGMP Snooping Querier . . . . . . . . . . . . . . 80
MLD Snooping . . . . . . . . . . . . . . . . . . . 80
Multicast VLAN Registration . . . . . . . . . . . . 81
Layer 3 Multicast Features . . . . . . . . . . . . . . . 81
Distance Vector Multicast Routing Protocol . . . . 81
Internet Group Management Protocol . . . . . . . 81
IGMP Proxy . . . . . . . . . . . . . . . . . . . . . 81
Protocol Independent Multicast—Dense
Mode . . . . . . . . . . . . . . . . . . . . . . . . 82
Protocol Independent Multicast—Sparse
Mode . . . . . . . . . . . . . . . . . . . . . . . . 82
Protocol Independent Multicast—Source
Specific Multicast . . . . . . . . . . . . . . . . . 82
Protocol Independent Multicast IPv6 Support . . . 82
MLD/MLDv2 (RFC2710/RFC3810) . . . . . . . . . . 82
3 Hardware Overview. . . . . . . . . . . . . . . . . 83
PowerConnect M6220, M6348, M8024, and
M8024-k Front Panel . . . . . . . . . . . . . . . . . . . 83
PowerConnect M6220 Front Panel . . . . . . . . . 83
PowerConnect M6348 Front Panel . . . . . . . . . 85
PowerConnect M8024 Front Panel . . . . . . . . . 86
PowerConnect M8024-k Front Panel . . . . . . . . 87
Console (RS-232) Port . . . . . . . . . . . . . . . . . . 87
Console Redirect . . . . . . . . . . . . . . . . . . 88

8Contents
Out-of-Band Management Port . . . . . . . . . . . . . 88
LED Definitions . . . . . . . . . . . . . . . . . . . . . . 89
Port LEDs . . . . . . . . . . . . . . . . . . . . . . 89
Module LEDs . . . . . . . . . . . . . . . . . . . . 91
System LEDs . . . . . . . . . . . . . . . . . . . . 93
4 Using Dell OpenManage Switch
Administrator . . . . . . . . . . . . . . . . . . . . . 95
About Dell OpenManage Switch Administrator. . . . . 95
Starting the Application . . . . . . . . . . . . . . . . . 96
Understanding the Interface . . . . . . . . . . . . . . . 97
Defining Fields . . . . . . . . . . . . . . . . . . . . . . 99
Understanding the Device View . . . . . . . . . . . . 100
Using the Device View Port Features. . . . . . . 100
5 Using the Command-Line Interface . . . . 101
Accessing the Switch Through the CLI . . . . . . . . 101
Console Connection. . . . . . . . . . . . . . . . 101
Telnet Connection. . . . . . . . . . . . . . . . . 102
Understanding Command Modes . . . . . . . . . . . 103
Entering CLI Commands . . . . . . . . . . . . . . . . 105
Using the Question Mark to Get Help. . . . . . . 105
Using Command Completion . . . . . . . . . . . 106
Entering Abbreviated Commands. . . . . . . . . 106
Negating Commands . . . . . . . . . . . . . . . 106
Understanding Error Messages . . . . . . . . . 107

Contents 9
Recalling Commands from the History Buffer . . . 107
Specifying Physical Ports . . . . . . . . . . . . . 108
6 Default Settings. . . . . . . . . . . . . . . . . . . 111
7 Setting the IP Address and Other
Basic Network Information . . . . . . . . . . 115
IP Address and Network Information Overview . . . . 115
What Is the Basic Network Information? . . . . . 115
Why Is Basic Network Information Needed? . . . 116
How Is Basic Network Information
Configured? . . . . . . . . . . . . . . . . . . . . . 117
What Is Out-of-Band Management and
In-Band Management? . . . . . . . . . . . . . . . 117
Default Network Information . . . . . . . . . . . . . . 119
Configuring Basic Network Information (Web) . . . . . 120
Out-of-Band Interface . . . . . . . . . . . . . . . 120
IP Interface Configuration (Default VLAN
IP Address) . . . . . . . . . . . . . . . . . . . . . 121
Route Entry Configuration (Switch Default
Gateway) . . . . . . . . . . . . . . . . . . . . . . 122
Domain Name Server. . . . . . . . . . . . . . . . 124
Default Domain Name . . . . . . . . . . . . . . . 125
Host Name Mapping . . . . . . . . . . . . . . . . 126
Dynamic Host Name Mapping . . . . . . . . . . . 127
Configuring Basic Network Information (CLI). . . . . . 128
Enabling the DHCP Client on the OOB Port. . . . . 128
Enabling the DHCP Client on the Default
VLAN . . . . . . . . . . . . . . . . . . . . . . . . 128
Managing DHCP Leases . . . . . . . . . . . . . . 129

10 Contents
Configuring Static Network Information on
the OOB Port . . . . . . . . . . . . . . . . . . . 130
Configuring Static Network Information on
the Default VLAN . . . . . . . . . . . . . . . . . 130
Configuring and Viewing Additional
Network Information . . . . . . . . . . . . . . . 131
Basic Network Information Configuration
Example . . . . . . . . . . . . . . . . . . . . . . . . 132
8 Managing a Switch Stack . . . . . . . . . . . 135
Stacking Overview . . . . . . . . . . . . . . . . . . . 135
Creating a PowerConnect M6220 Stack . . . . . 136
Creating a PowerConnect M6348 Stack . . . . . 137
PowerConnect 7000 Series and M6348
Stacking Compatibility . . . . . . . . . . . . . . 139
How is the Management Unit Selected? . . . . . 139
Adding a Switch to the Stack . . . . . . . . . . . 140
Removing a Switch from the Stack . . . . . . . . 141
How is the Firmware Updated on the Stack?. . . 142
What is Stacking Standby? . . . . . . . . . . . . 142
What is Nonstop Forwarding? . . . . . . . . . . 142
Switch Stack MAC Addressing and Stack
Design Considerations . . . . . . . . . . . . . . 145
NSF Network Design Considerations. . . . . . . 146
Why is Stacking Needed? . . . . . . . . . . . . 146
Default Stacking Values . . . . . . . . . . . . . . . . 147
Managing and Monitoring the Stack (Web) . . . . . . 148
Unit Configuration. . . . . . . . . . . . . . . . . 148
Stack Summary . . . . . . . . . . . . . . . . . . 150
Stack Firmware Synchronization . . . . . . . . . 151
Supported Switches . . . . . . . . . . . . . . . 152

Contents 11
Stack Port Summary . . . . . . . . . . . . . . . . 153
Stack Port Counters . . . . . . . . . . . . . . . . 154
Stack Port Diagnostics . . . . . . . . . . . . . . . 154
NSF Summary. . . . . . . . . . . . . . . . . . . . 155
Checkpoint Statistics . . . . . . . . . . . . . . . . 156
Managing the Stack (CLI) . . . . . . . . . . . . . . . . 157
Configuring Stack Member and NSF Settings . . . 157
Viewing and Clearing Stacking and NSF
Information . . . . . . . . . . . . . . . . . . . . . 158
Stacking and NSF Usage Scenarios. . . . . . . . . . . 159
Basic Failover. . . . . . . . . . . . . . . . . . . . 160
Preconfiguring a Stack Member . . . . . . . . . . 162
NSF in the Data Center . . . . . . . . . . . . . . . 164
NSF and VoIP . . . . . . . . . . . . . . . . . . . . 165
NSF and DHCP Snooping . . . . . . . . . . . . . . 166
NSF and the Storage Access Network . . . . . . . 167
NSF and Routed Access . . . . . . . . . . . . . . 169
9 Controlling Management Access . . . . . 171
Management Access Control Overview . . . . . . . . 171
What Are the Recommendations for
Management Security?. . . . . . . . . . . . . . . 173
What Is an Authentication Profile?. . . . . . . . . 173
How Does TACACS+ Control Management
Access?. . . . . . . . . . . . . . . . . . . . . . . 174
How Does RADIUS Control Management
Access?. . . . . . . . . . . . . . . . . . . . . . . 176
What are RADIUS Server Groups? . . . . . . . . . 178
How Does the Switch Determine Which
RADIUS Server to Contact? . . . . . . . . . . . . 178
What Other Features Use Authentication?. . . . . 180

12 Contents
Default Management Security Values. . . . . . . . . 180
Controlling Management Access (Web) . . . . . . . 182
Access Profile . . . . . . . . . . . . . . . . . . 182
Authentication Profiles . . . . . . . . . . . . . . 186
Select Authentication. . . . . . . . . . . . . . . 190
Password Management . . . . . . . . . . . . . 191
Last Password Set Result. . . . . . . . . . . . . 193
User Login Configuration . . . . . . . . . . . . . 194
Local User Database . . . . . . . . . . . . . . . 195
Line Password . . . . . . . . . . . . . . . . . . 197
Enable Password . . . . . . . . . . . . . . . . . 197
TACACS+ Settings . . . . . . . . . . . . . . . . 198
RADIUS Global Configuration. . . . . . . . . . . 200
RADIUS Server Configuration . . . . . . . . . . 201
RADIUS Accounting Server Configuration . . . . 203
RADIUS Accounting Server Statistics . . . . . . 205
RADIUS Server Statistics . . . . . . . . . . . . . 206
Authorization Network RADIUS . . . . . . . . . 207
Telnet Server . . . . . . . . . . . . . . . . . . . 208
Denial of Service . . . . . . . . . . . . . . . . . 209
Secure HTTP Configuration. . . . . . . . . . . . 210
Secure Shell Configuration . . . . . . . . . . . . 213
Secure Public Key Configuration . . . . . . . . . 214
Controlling Management Access (CLI) . . . . . . . . 216
Configuring a Management Access List . . . . . 216
Adding Users to the Local Database . . . . . . . 218
Configuring and Applying Authentication
Profiles . . . . . . . . . . . . . . . . . . . . . . 219
Managing Passwords. . . . . . . . . . . . . . . 220
Configuring RADIUS Server Information . . . . . 222
Configuring TACACS+ Server Information . . . . 224
Configuring Telnet and SSH Access . . . . . . . 225

Contents 13
Configuring HTTP and HTTPS Access . . . . . . . 226
Configuring DoS Information . . . . . . . . . . . . 228
Management Access Configuration Examples . . . . . 230
Configuring a Management Access List . . . . . . 230
Configuring the Primary and Secondary
RADIUS Servers . . . . . . . . . . . . . . . . . . 231
Configuring an Authentication Profile . . . . . . . 233
Configuring Password Lockout. . . . . . . . . . . 234
10 Monitoring and Logging System
Information . . . . . . . . . . . . . . . . . . . . . . 239
System Monitoring Overview . . . . . . . . . . . . . . 239
What System Information Is Monitored?. . . . . . 239
Why Is System Information Needed? . . . . . . . 240
Where Are Log Messages Sent? . . . . . . . . . . 240
What Are the Severity Levels? . . . . . . . . . . . 241
What Are the System Startup and
Operation Logs? . . . . . . . . . . . . . . . . . . 241
What Is the Log Message Format? . . . . . . . . . 242
What Factors Should Be Considered When
Configuring Logging? . . . . . . . . . . . . . . . . 243
Default Log Settings . . . . . . . . . . . . . . . . . . . 243
Monitoring System Information and Configuring
Logging (Web) . . . . . . . . . . . . . . . . . . . . . . 244
Device Information . . . . . . . . . . . . . . . . . 244
System Health . . . . . . . . . . . . . . . . . . . 246
System Resources . . . . . . . . . . . . . . . . . 247
Integrated Cable Test for Copper Cables. . . . . . 248
Optical Transceiver Diagnostics . . . . . . . . . . 249
Log Global Settings . . . . . . . . . . . . . . . . . 251
RAM Log . . . . . . . . . . . . . . . . . . . . . . 252

14 Contents
Log File . . . . . . . . . . . . . . . . . . . . . . 253
Remote Log Server . . . . . . . . . . . . . . . . 253
Email Alert Global Configuration . . . . . . . . . 256
Email Alert Mail Server Configuration . . . . . . 257
Email Alert Subject Configuration . . . . . . . . 259
Email Alert To Address Configuration. . . . . . . 260
Email Alert Statistics . . . . . . . . . . . . . . . 261
Monitoring System Information and
Configuring Logging (CLI) . . . . . . . . . . . . . . . 262
Viewing System Information . . . . . . . . . . . 262
Running Cable Diagnostics . . . . . . . . . . . . 262
Configuring Local Logging . . . . . . . . . . . . 263
Configuring Remote Logging . . . . . . . . . . . 265
Configuring Mail Server Settings . . . . . . . . . 266
Configuring Email Alerts for Log Messages . . . 267
Logging Configuration Examples . . . . . . . . . . . 269
Configuring Local and Remote Logging . . . . . 269
Configuring Email Alerting . . . . . . . . . . . . 271
11 Managing General System Settings . . . 275
System Settings Overview . . . . . . . . . . . . . . . 275
Why Does System Information Need to
Be Configured? . . . . . . . . . . . . . . . . . . 276
What is Simple Mode? . . . . . . . . . . . . . . 277
What is the Port Aggregator Feature? . . . . . . 279
What Is the LAG Dependency Feature in
Port Aggregator Mode?. . . . . . . . . . . . . . 280
What Are SDM Templates? . . . . . . . . . . . . 280
Why is the System Time Needed? . . . . . . . . 281
How Does SNTP Work?. . . . . . . . . . . . . . 281
What Configuration Is Required for
Plug-In Modules? . . . . . . . . . . . . . . . . . 282

Contents 15
Default General System Information . . . . . . . . . . 283
Default Port Aggregator Configurations . . . . . . 283
Configuring General System Settings (Web) . . . . . . 286
System Information . . . . . . . . . . . . . . . . . 286
CLI Banner . . . . . . . . . . . . . . . . . . . . . 289
SDM Template Preference . . . . . . . . . . . . . 290
Operational Mode Configuration . . . . . . . . . . 291
Port Aggregator Global Configuration . . . . . . . 293
Port Aggregator Port Configuration . . . . . . . . 294
Port Aggregator Group Configuration . . . . . . . 296
Port Aggregator Internal Port VLAN
Configuration . . . . . . . . . . . . . . . . . . . . 298
Port Aggregator Port Channel Summary . . . . . . 300
Group VLAN MAC Summary . . . . . . . . . . . . 301
Clock . . . . . . . . . . . . . . . . . . . . . . . . 302
SNTP Global Settings . . . . . . . . . . . . . . . . 303
SNTP Authentication . . . . . . . . . . . . . . . . 304
SNTP Server . . . . . . . . . . . . . . . . . . . . 306
Summer Time Configuration . . . . . . . . . . . . 310
Time Zone Configuration . . . . . . . . . . . . . . 311
Slot Summary . . . . . . . . . . . . . . . . . . . . 312
Supported Cards . . . . . . . . . . . . . . . . . . 313
Configuring System Settings (CLI). . . . . . . . . . . . 314
Configuring System Information . . . . . . . . . . 314
Configuring the Banner. . . . . . . . . . . . . . . 315
Managing the SDM Template . . . . . . . . . . . 316
Configuring the Operational Mode and Port
Aggregator Features . . . . . . . . . . . . . . . . 316
Configuring SNTP Authentication and an
SNTP Server . . . . . . . . . . . . . . . . . . . . 318
Setting the System Time and Date Manually. . . . 320
Viewing Slot Information . . . . . . . . . . . . . . 321

16 Contents
General System Settings Configuration
Examples . . . . . . . . . . . . . . . . . . . . . . . . 322
Configuring System and Banner Information. . . 322
Configuring SNTP . . . . . . . . . . . . . . . . . 324
Configuring the Time Manually . . . . . . . . . . 326
12 Configuring SNMP . . . . . . . . . . . . . . . . . 327
SNMP Overview . . . . . . . . . . . . . . . . . . . . 327
What Is SNMP? . . . . . . . . . . . . . . . . . . 327
What Are SNMP Traps? . . . . . . . . . . . . . 328
Why Is SNMP Needed?. . . . . . . . . . . . . . 329
Default SNMP Values . . . . . . . . . . . . . . . . . 329
Configuring SNMP (Web) . . . . . . . . . . . . . . . 331
SNMP Global Parameters . . . . . . . . . . . . 331
SNMP View Settings . . . . . . . . . . . . . . . 332
Access Control Group . . . . . . . . . . . . . . 334
SNMPv3 User Security Model (USM) . . . . . . 335
Communities . . . . . . . . . . . . . . . . . . . 338
Notification Filter . . . . . . . . . . . . . . . . . 341
Notification Recipients . . . . . . . . . . . . . . 342
Trap Flags . . . . . . . . . . . . . . . . . . . . . 345
OSPFv2 Trap Flags . . . . . . . . . . . . . . . . 346
OSPFv3 Trap Flags . . . . . . . . . . . . . . . . 347
Trap Log . . . . . . . . . . . . . . . . . . . . . . 348
Configuring SNMP (CLI) . . . . . . . . . . . . . . . . 349
Configuring the SNMPv3 Engine ID. . . . . . . . 349
Configuring SNMP Views, Groups, and
Users . . . . . . . . . . . . . . . . . . . . . . . 350
Configuring Communities . . . . . . . . . . . . . 353
Configuring SNMP Notifications (Traps
and Informs). . . . . . . . . . . . . . . . . . . . 355

Contents 17
SNMP Configuration Examples . . . . . . . . . . . . . 358
Configuring SNMPv1 and SNMPv2. . . . . . . . . 358
Configuring SNMPv3 . . . . . . . . . . . . . . . . 359
13 Managing Images and Files . . . . . . . . . 363
Image and File Management Overview . . . . . . . . . 363
What Files Can Be Managed? . . . . . . . . . . . 363
Why Is File Management Needed?. . . . . . . . . 365
What Methods Are Supported for File
Management? . . . . . . . . . . . . . . . . . . . 367
What Factors Should Be Considered When
Managing Files? . . . . . . . . . . . . . . . . . . 367
How Is the Running Configuration Saved? . . . . . 369
Managing Images and Files (Web) . . . . . . . . . . . 370
File System . . . . . . . . . . . . . . . . . . . . . 370
Active Images . . . . . . . . . . . . . . . . . . . 371
File Download. . . . . . . . . . . . . . . . . . . . 372
File Upload . . . . . . . . . . . . . . . . . . . . . 374
Copy Files . . . . . . . . . . . . . . . . . . . . . . 376
Managing Images and Files (CLI) . . . . . . . . . . . . 377
Downloading and Activating a New
Image (TFTP) . . . . . . . . . . . . . . . . . . . . 377
Managing Files in Internal Flash . . . . . . . . . . 378
Uploading a Configuration File (SCP). . . . . . . . 378
Managing Configuration Scripts (SFTP) . . . . . . 379
File and Image Management Configuration
Examples. . . . . . . . . . . . . . . . . . . . . . . . . 381
Upgrading the Firmware . . . . . . . . . . . . . . 381
Managing Configuration Scripts . . . . . . . . . . 384

18 Contents
14 Automatically Updating the
Image and Configuration . . . . . . . . . . . . 387
Auto Configuration Overview . . . . . . . . . . . . . 387
What Is the DHCP Auto Configuration
Process? . . . . . . . . . . . . . . . . . . . . . 387
Monitoring and Completing the DHCP
Auto Configuration Process . . . . . . . . . . . 392
What Are the Dependencies for DHCP
Auto Configuration?. . . . . . . . . . . . . . . . 393
Default Auto Configuration Values . . . . . . . . . . 394
Managing Auto Configuration (Web) . . . . . . . . . 395
Auto-Install Configuration . . . . . . . . . . . . 395
Managing Auto Configuration (CLI) . . . . . . . . . . 396
Managing Auto Configuration . . . . . . . . . . 396
Auto Configuration Example . . . . . . . . . . . . . . 397
Enabling DHCP Auto Configuration and
Auto Image Download . . . . . . . . . . . . . . 397
15 Monitoring Switch Traffic . . . . . . . . . . . 399
Traffic Monitoring Overview. . . . . . . . . . . . . . 399
What is sFlow Technology? . . . . . . . . . . . . 399
What is RMON? . . . . . . . . . . . . . . . . . . 402
What is Port Mirroring?. . . . . . . . . . . . . . 403
Why is Traffic Monitoring Needed? . . . . . . . 404
Default Traffic Monitoring Values . . . . . . . . . . . 404
Monitoring Switch Traffic (Web) . . . . . . . . . . . 405
sFlow Agent Summary . . . . . . . . . . . . . . 405
sFlow Receiver Configuration . . . . . . . . . . 406

Contents 19
sFlow Sampler Configuration. . . . . . . . . . . . 407
sFlow Poll Configuration . . . . . . . . . . . . . . 408
Interface Statistics . . . . . . . . . . . . . . . . . 409
Etherlike Statistics . . . . . . . . . . . . . . . . . 410
GVRP Statistics . . . . . . . . . . . . . . . . . . . 411
EAP Statistics. . . . . . . . . . . . . . . . . . . . 412
Utilization Summary . . . . . . . . . . . . . . . . 413
Counter Summary. . . . . . . . . . . . . . . . . . 414
Switchport Statistics . . . . . . . . . . . . . . . . 415
RMON Statistics . . . . . . . . . . . . . . . . . . 416
RMON History Control Statistics . . . . . . . . . . 417
RMON History Table . . . . . . . . . . . . . . . . 419
RMON Event Control . . . . . . . . . . . . . . . . 420
RMON Event Log . . . . . . . . . . . . . . . . . . 422
RMON Alarms . . . . . . . . . . . . . . . . . . . 423
Port Statistics. . . . . . . . . . . . . . . . . . . . 425
LAG Statistics. . . . . . . . . . . . . . . . . . . . 426
Port Mirroring. . . . . . . . . . . . . . . . . . . . 427
Monitoring Switch Traffic (CLI) . . . . . . . . . . . . . 429
Configuring sFlow. . . . . . . . . . . . . . . . . . 429
Configuring RMON . . . . . . . . . . . . . . . . . 431
Viewing Statistics. . . . . . . . . . . . . . . . . . 433
Configuring Port Mirroring . . . . . . . . . . . . . 434
Traffic Monitoring Configuration Examples. . . . . . . 435
Configuring sFlow. . . . . . . . . . . . . . . . . . 435
Configuring RMON . . . . . . . . . . . . . . . . . 437
16 Configuring iSCSI Optimization . . . . . . . 439
iSCSI Optimization Overview . . . . . . . . . . . . . . 439
When Should iSCSI Optimization Be
Enabled? . . . . . . . . . . . . . . . . . . . . . . 440

20 Contents
How Does the Switch Detect iSCSI
Traffic Flows? . . . . . . . . . . . . . . . . . . . 440
How Is Quality of Service Applied to iSCSI
Traffic Flows? . . . . . . . . . . . . . . . . . . . 440
What Information Does the Switch Track in
iSCSI Traffic Flows?. . . . . . . . . . . . . . . . 441
How Does iSCSI Optimization Interact
With Dell EqualLogic Arrays?. . . . . . . . . . . 441
What Occurs When iSCSI is Enabled or
Disabled? . . . . . . . . . . . . . . . . . . . . . 442
Default iSCSI Optimization Values. . . . . . . . . . . 443
Configuring iSCSI Optimization (Web). . . . . . . . . 444
iSCSI Global Configuration . . . . . . . . . . . . 444
iSCSI Targets Table . . . . . . . . . . . . . . . . 445
iSCSI Sessions Table . . . . . . . . . . . . . . . 446
iSCSI Sessions Detailed . . . . . . . . . . . . . 447
Configuring iSCSI Optimization (CLI) . . . . . . . . . 448
iSCSI Optimization Configuration Examples . . . . . 450
Configuring iSCSI Optimization Between
Servers and a Disk Array . . . . . . . . . . . . . 450
17 Configuring a Captive Portal . . . . . . . . . 453
Captive Portal Overview . . . . . . . . . . . . . . . . 453
What Does a Captive Portal Do? . . . . . . . . . 453
Is the Captive Portal Feature Dependent
on Any Other Feature? . . . . . . . . . . . . . . 454
What Factors Should Be Considered When
Designing and Configuring a Captive Portal?. . . 455
How Does Captive Portal Work? . . . . . . . . . 456
What Captive Portal Pages Can Be
Customized?. . . . . . . . . . . . . . . . . . . . 457