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3Com Switch 4500 Family
Configuration Guide
Switch
4500
26-Port
Switch
4500
50-Port
Switch 4500 PWR 26-Port
Switch 4500 PWR 50-Port
Product Version: V3.03.02p02
Manual Version: 6W100-20100
418
www.3com.com
3Com Corporation
350 Campus Drive, Marlborough, MA, USA 01752 30
64
2
Table of Contents
Main Page
About this Manual
3
Configuration Guide
1
Table of Contents
3
Related Documentation
6
Obtaining Documentation
6
CLI Configuration
7
User Control
8
Switching User Level
8
Configuration File Management
8
VLAN Overview
8
VLAN Configuration
9
IP Addressing Configuration
9
IP Performance Optimization Configuration
9
Voice VLAN Configuration
9
GVRP Configuration
10
Port Basic Configuration
10
Link Aggregation Configuration
10
Port Isolation Configuration
11
Port Security Configuration
11
Port Binding Configuration
11
DLDP Configuration
12
MAC Address Table Management
12
Auto Detect Configuration
12
MSTP Configuration
12
IP Routing Protocol Overview
13
RIP Configuration
14
IP Route Policy Configuration
14
Multicast Overview
15
Common Multicast Configuration
15
IGMP Snooping Configuration
15
802.1X Configuration/Quick Ead Deployment Configuration
16
Default Chapter
16
802.1X Configuration
16
HABP Configuration
16
Quick EAD Deployment Configuration
16
System Guard Configuration
16
AAA Configuration
17
AAA Overview
17
ARP Attack Defense Configuration
18
ARP Configuration
18
EAD Configuration
18
MAC Address Authentication Configuration
18
DHCP Overview
19
DHCP Server Configuration
19
DHCP Relay Agent Configuration
20
DHCP Snooping Configuration
20
ACL Configuration
21
DHCP Packet Rate Limit Configuration
21
DHCP/BOOTP Client Configuration
21
Qos Configuration
21
47-XRN Fabric Configuration
22
Mirroring Configuration
22
48-Cluster Configuration
23
Poe Configuration
23
Poe Profile Configuration
23
NTP Configuration
24
RMON Configuration
24
SNMP Configuration
24
File System Management Configuration
25
SSH Configuration
25
FTP and SFTP Configuration
26
Information Center
26
TFTP Configuration
26
Basic System Configuration and Debugging
27
Boot ROM and Host Software Loading
27
Device Management
27
Network Connectivity Test
27
Scheduled Task Configuration
27
Ipv6 Configuration
28
Remote-Ping Configuration
28
Selective Qinq Configuration
28
VLAN-VPN Configuration
28
Access Management Configuration
29
Ipv6 Application Configuration
29
LLDP Configuration
29
Password Control Configuration
29
PKI Configuration
30
SSL Configuration
30
HTTPS Configuration
31
CLI Configuration
32
Entering CLI through the Console Port
32
Entering the CLI
32
What Is CLI
32
Entering CLI through Telnet
36
3Com Products CLI Descriptions
38
Command Conventions
38
CLI View Description
39
Tips on Using the CLI
43
Using the CLI Online Help
43
Command Line Error Information
44
Typing and Editing Commands
44
Displaying and Executing History Commands
45
Controlling CLI Display
46
Undo Form of a Command
46
CLI Configurations
47
Configuring Command Aliases
47
Configuring Command Levels
48
Synchronous Information Output
48
Saving Configurations
50
Introduction to the User Interface
51
Logging in to an Ethernet Switch
51
Supported User Interfaces
51
User Interface Index
51
Common User Interface Configuration
52
Introduction
53
Logging in through the Console Port
53
Console Port Login Configuration
55
Console Port Login Configuration with Authentication Mode Being None
57
Console Port Login Configuration with Authentication Mode Being Password
59
Console Port Login Configuration with Authentication Mode Being Scheme
62
Introduction
65
Logging in through Telnet
65
Telnet Configuration with Authentication Mode Being None
68
Telnet Configuration with Authentication Mode Being Password
69
Telnet Configuration with Authentication Mode Being Scheme
72
Telnetting to a Switch
75
Configuration on the Switch Side
78
Introduction
78
Logging in Using a Modem
78
Modem Connection Establishment
79
Logging in through the Web-Based Network Management System
81
Establishing an Http Connection
82
Configuring the Login Banner
83
Enabling/Disabling the Web Server
84
Connection Establishment Using Nms
85
Logging in through Nms
85
Displaying Source Ip Address Configuration
87
Controlling Telnet Users
89
Controlling Telnet Users by Source Ip Addresses
89
Controlling Network Management Users by Source Ip Addresses
91
Controlling Web Users by Source Ip Address
93
Controlling Web Users by Source Ip Addresses
93
Disconnecting a Web User by Force
93
Configuration Example
94
Adopting Hwtacacs Authentication for User Level Switching
97
Configuration Examples
98
Super Password Authentication Configuration Example
98
Switching to a Specific User Level
98
Hwtacacs Authentication Configuration Example
99
Erasing the Startup Configuration File
103
Specifying a Configuration File for Next Startup
103
Displaying Switch Configuration
104
Advantages of Vlans
106
Vlan Fundamentals
106
Link Types of Ethernet Ports
108
Port-Based Vlan
108
Vlan Classification
108
Vlan Interface
108
Assigning an Ethernet Port to Specified Vlans
109
Configuring the Default Vlan ID for a Port
109
Vlan Configuration
111
Basic Vlan Interface Configuration
112
Configuring a Port-Based Vlan
113
Configuring the Link Type of an Ethernet Port
113
Displaying Vlan Configuration
113
Port-Based Vlan Configuration Task List
113
Assigning an Ethernet Port to a Vlan
114
Configuring the Default Vlan for a Port
115
Displaying and Maintaining Port-Based Vlan
115
Port-Based Vlan Configuration Example
115
Subnetting and Masking
119
Configuring Ip Addresses
120
Configuring Static Domain Name Resolution
121
Displaying Ip Addressing Configuration
121
Ip Address Configuration Example I
121
Ip Address Configuration Examples
121
Ip Address Configuration Example II
122
Static Domain Name Resolution Configuration Example
123
Configuring Ip Performance
125
Configuring Tcp Attributes
125
Introduction to Ip Performance Configuration
125
Disabling Icmp to Send Error Packets
126
Displaying and Maintaining Ip Performance Configuration
127
How an Ip Phone Works
129
How Switch 4500 Series Switches Identify Voice Traffic
131
Setting the Voice Traffic Transmission Priority
132
Support for Voice Vlan on Various Ports
132
Security Mode of Voice Vlan
134
Configuring the Voice Vlan to Operate in Automatic Voice Vlan Assignment Mode
135
Configuring the Voice Vlan to Operate in Manual Voice Vlan Assignment Mode
136
Displaying and Maintaining Voice Vlan
138
Voice Vlan Configuration Example (Automatic Voice Vlan Assignment Mode)
139
Voice Vlan Configuration Example (Manual Voice Vlan Assignment Mode)
140
Enabling Gvrp
145
Gvrp Configuration Tasks
145
Protocol Specifications
145
Configuring Gvrp Timers
146
Configuring Gvrp Port Registration Mode
147
Displaying and Maintaining Gvrp
148
Gvrp Configuration Example
148
Limiting Traffic on Individual Ports
154
Configuring Flow Control on a Port
155
Configuring Loopback Detection for an Ethernet Port
156
Duplicating the Configuration of a Port to Other Ports
156
Enabling Loopback Test
158
Configuring the Interval to Perform Statistical Analysis on Port Traffic
159
Enabling the System to Test Connected Cable
159
Disabling Up/Down Log Output on a Port
160
Enabling Giant-Frame Statistics Function
160
Setting the Port State Change Delay
161
Displaying and Maintaining Basic Port Configuration
162
Ethernet Port Configuration Example
162
Troubleshooting Ethernet Port Configuration
163
Link Aggregation Classification
165
Manual Aggregation Group
165
Static Lacp Aggregation Group
166
Dynamic Lacp Aggregation Group
167
Aggregation Group Categories
168
Configuring a Manual Aggregation Group
169
Configuring a Static Lacp Aggregation Group
170
Configuring a Dynamic Lacp Aggregation Group
171
Configuring a Description for an Aggregation Group
172
Displaying and Maintaining Link Aggregation Configuration
172
Ethernet Port Aggregation Configuration Example
173
Link Aggregation Configuration Example
173
Port Isolation Overview
175
Displaying and Maintaining Port Isolation Configuration
176
Port Isolation Configuration Example
176
Port Security Modes
178
Port Security Overview
178
Port Security Features
183
Enabling Port Security
184
Port Security Configuration Task List
184
Setting the Maximum Number of Secure Mac Addresses Allowed on a Port
185
Setting the Port Security Mode
186
Configuring Port Security Features
187
Configuring Guest Vlan for a Port in Macaddressoruserloginsecure Mode
188
Configuring Secure Mac Addresses
189
Ignoring the Authorization Information from the Radius Server
189
Displaying and Maintaining Port Security Configuration
191
Port Security Configuration Examples
191
Port Security Mode Autolearn Configuration Example
191
Port Security Mode Macaddresswithradius Configuration Example
192
Port Security Mode Userloginwithoui Configuration Example
194
Port Security Mode Macaddresselseuserloginsecureext Configuration Example
196
Port Security Mode Macaddressanduserloginsecureext Configuration Example
198
Guest Vlan Configuration Example
200
Displaying and Maintaining Port Binding Configuration
204
Port Binding Configuration Example
204
Dldp Fundamentals
207
Performing Basic Dldp Configuration
213
Resetting Dldp State
214
Displaying and Maintaining Dldp
215
Dldp Configuration Example
215
Mac Address Table Management Configuration Task List
220
Setting the Mac Address Aging Timer
222
Setting the Maximum Number of Mac Addresses a Port Can Learn
222
Displaying Mac Address Table Information
223
Enabling Destination Mac Address Triggered Update
223
Adding a Static Mac Address Entry Manually
224
Auto Detect Basic Configuration
226
Auto Detect Implementation in Static Routing
226
Auto Detect Implementation in Vlan Interface Backup
227
Configuration Example for Auto Detect Implementation with Static Routing
228
Configuration Example for Auto Detect Implementation with Vlan Interface Backup
229
Spanning Tree Protocol Overview
231
Multiple Spanning Tree Protocol Overview
240
Rapid Spanning Tree Protocol Overview
240
Mstp Implementation on Switches
244
Mstp Configuration Task List
245
Configuring an Mst Region
247
Configuring Root Bridge
247
Specifying the Current Switch as a Root Bridge/Secondary Root Bridge
248
Configuring the Bridge Priority of the Current Switch
250
Configuring the Mstp Operation Mode
251
Configuring the Maximum Hop Count of an Mst Region
252
Configuring the Mstp Time-Related Parameters
253
Configuring the Network Diameter of the Switched Network
253
Configuring the Current Port as an Edge Port
256
Configuring Leaf Nodes
259
Configuring the Mst Region
259
Configuring a Port as an Edge Port
260
Configuring the Path Cost for a Port
260
Configuring Port Priority
262
Performing Mcheck Operation
263
Configuring Bpdu Guard
264
Configuring Guard Functions
264
Configuring Root Guard
265
Configuring Loop Guard
267
Configuring Tc-Bpdu Attack Guard
267
Configuring Digest Snooping
269
Configuring Vlan-Vpn Tunnel
273
Enabling Log/Trap Output for Ports of Mstp Instance
274
Mstp Maintenance Configuration
274
Displaying and Maintaining Mstp
275
Enabling Trap Messages Conforming to 802.1D Standard
275
Mstp Configuration Example
276
Vlan-Vpn Tunnel Configuration Example
278
Introduction to Ip Route and Routing Table
280
Classification of Dynamic Routing Protocols
282
Routing Protocol Overview
282
Static Routing and Dynamic Routing
282
Displaying and Maintaining a Routing Table
284
Routing Information Sharing
284
Introduction to Static Route
285
Configuring a Static Route
286
Displaying and Maintaining Static Routes
286
Troubleshooting a Static Route
288
Rip Configuration
289
Rip Overview
289
Rip Configuration Task List
290
Configuring Basic Rip Functions
291
Rip Route Control
292
Configuring Rip Route Control
293
Rip Network Adjustment and Optimization
296
Displaying and Maintaining Rip Configuration
298
Rip Configuration Example
298
Failed to Receive Rip Updates
299
Troubleshooting Rip Configuration
299
Ip Route Policy Overview
300
Defining a Route Policy
302
Defining If-Match Clauses and Apply Clauses
302
Configuring an Ip-Prefix List
304
Displaying Ip Route Policy
304
Ip-Prefix Configuration
304
Controlling Rip Packet Cost to Implement Dynamic Route Backup
305
Ip Route Policy Configuration Example
305
Troubleshooting Ip Route Policy
308
Roles in Multicast
311
Common Notations in Multicast
312
Multicast Models
313
Multicast Protocols
316
Multicast Packet Forwarding Mechanism
318
Implementation of the Rpf Mechanism
319
Rpf Check
319
Configuring Dropping Unknown Multicast Packets
323
Displaying and Maintaining Common Multicast Configuration
323
Basic Concepts in Igmp Snooping
325
Work Mechanism of Igmp Snooping
326
Configuring Igmp Snooping
328
Enabling Igmp Snooping
328
Configuring the Version of Igmp Snooping
329
Configuring Timers
329
Configuring Fast Leave Processing
330
Configuring a Multicast Group Filter
331
Configuring the Maximum Number of Multicast Groups on a Port
332
Configuring Igmp Snooping Querier
333
Configuring Static Member Port for a Multicast Group
334
Suppressing Flooding of Unknown Multicast Traffic in a Vlan
334
Configuring a Static Router Port
335
Configuring a Port as a Simulated Group Member
336
Configuring a Vlan Tag for Query Messages
337
Displaying and Maintaining Igmp Snooping
339
Igmp Snooping Configuration Examples
339
Configuring Multicast Vlan
341
Troubleshooting Igmp Snooping
343
Architecture of 802.1X Authentication
345
Encapsulation of Eapol Messages
347
Timers Used in 802.1X
352
X Implementation on a 3Com 4500 Series Switch
353
Introduction to 802.1X Configuration
356
Basic 802.1X Configuration
357
Configuring Basic 802.1X Functions
357
Timer and Maximum User Number Configuration
358
Advanced 802.1X Configuration
359
Configuring Client Version Checking
360
Configuring Proxy Checking
360
Configuring Guest Vlan
361
Enabling Dhcp-Triggered Authentication
361
Configuring 802.1X Re-Authentication
362
Configuring the 802.1X Re-Authentication Timer
362
Displaying and Maintaining 802.1X Configuration
363
X Configuration Example
363
Quick Ead Deployment Configuration
366
Introduction to Quick Ead Deployment
366
Quick Ead Deployment Overview
366
Configuring Quick Ead Deployment
367
Displaying and Maintaining Quick Ead Deployment
368
Quick Ead Deployment Configuration Example
368
Troubleshooting
370
Habp Configuration
371
Displaying and Maintaining Habp Configuration
372
Habp Client Configuration
372
System Guard Configuration
373
Cpu Protection
373
Layer 3 Error Control
373
Configuring System Guard
374
Configuring System Guard against Ip Attacks
374
Configuring System Guard against Tcn Attacks
374
Configuring Cpu Protection
375
Enabling Layer 3 Error Control
375
Displaying and Maintaining System Guard Configuration
376
Aaa Overview
377
Introduction to Radius
378
Introduction to Hwtacacs
382
Aaa Configuration Task List
386
Creating an Isp Domain and Configuring Its Attributes
387
Configuring an Aaa Scheme for an Isp Domain
388
Configuring Dynamic Vlan Assignment
391
Configuring the Attributes of a Local User
393
Cutting down User Connections Forcibly
395
Radius Configuration Task List
395
Configuring Radius Authentication/Authorization Servers
397
Creating a Radius Scheme
397
Configuring Ignorance of Assigned Radius Authorization Attributes
398
Configuring Radius Accounting Servers
399
Configuring Shared Keys for Radius Messages
400
Configuring the Maximum Number of Radius Request Transmission Attempts
401
Configuring the Type of Radius Servers to be Supported
401
Configuring the Status of Radius Servers
402
Configuring the Attributes of Data to be Sent to Radius Servers
403
Configuring the Local Radius Server
404
Configuring Timers for Radius Servers
405
Enabling Sending Trap Message When a Radius Server Goes down
406
Enabling the User Re-Authentication at Restart Function
406
Hwtacacs Configuration Task List
408
Configuring Tacacs Authentication Servers
408
Creating a Hwtacacs Scheme
408
Configuring Tacacs Authorization Servers
409
Configuring Shared Keys for Hwtacacs Messages
410
Configuring Tacacs Accounting Servers
410
Configuring the Attributes of Data to be Sent to Tacacs Servers
411
Configuring the Timers Regarding Tacacs Servers
412
Displaying and Maintaining Aaa Configuration
413
Displaying and Maintaining Radius Protocol Configuration
413
Aaa Configuration Examples
414
Displaying and Maintaining Hwtacacs Protocol Configuration
414
Remote Radius Authentication of Telnet/Ssh Users
414
Local Authentication of Ftp/Telnet Users
416
Hwtacacs Authentication and Authorization of Telnet Users
417
Auto Vlan Configuration Example
418
Troubleshooting Aaa
419
Troubleshooting Radius Configuration
419
Troubleshooting Hwtacacs Configuration
420
Ead Configuration
421
Ead Configuration Example
422
Mac Address Authentication Configuration
424
Mac Address Authentication Overview
424
Quiet Mac Address
425
Mac Address Authentication Enhanced Function Configuration
427
Mac Address Authentication Configuration Examples
430
Arp Configuration
432
Introduction to Arp
432
Arp Function
432
Arp Message Format
432
Arp Process
434
Arp Table
434
Configuring Arp
435
Introduction to Gratuitous Arp
435
Configuring Gratuitous Arp
436
Arp Configuration Examples
437
Arp Attack Defense Configuration
438
Introduction to Arp Attack Detection
438
Introduction to Maximum Number of Dynamic Arp Entries a Vlan Interface Can Learn
438
Introduction to Arp Packet Filtering Based on Gateway's Address
440
Introduction to Arp Packet Rate Limit
440
Displaying and Debugging Arp
437
Configuring Arp Attack Defense
441
Arp Attack Defense Configuration Task List
441
Arp Packet Filtering Based on Gateway's Address
442
Configuring Arp Source Mac Address Consistency Check
442
Configuring the Maximum Number of Dynamic Arp Entries that a Vlan Interface Can Learn
442
Configuring Arp Attack Detection
443
Configuring the Arp Packet Rate Limit Function
444
Arp Attack Defense Configuration Example
445
Arp Attack Defense Configuration Example I
445
Arp Attack Defense Configuration Example II
447
Arp Attack Defense Configuration Example III
448
Arp Attack Defense Configuration Example IV
448
Dhcp Overview
450
Dhcp Server Configuration
454
Introduction to Dhcp Server
454
Dhcp Address Pool
454
Dhcp Ip Address Preferences
456
Xrn Support
456
Dhcp Server Configuration Task List
457
Enabling Dhcp
457
Configuring the Global Address Pool Based Dhcp Server
458
Enabling the Global Address Pool Mode on Interface(S)
458
Configuring an Address Allocation Mode for the Global Address Pool
459
Creating a Dhcp Global Address Pool
459
Configuring Gateways for the Dhcp Client
464
Configuring the Interface Address Pool Based Dhcp Server
468
Enabling the Interface Address Pool Mode on Interface(S)
469
Configuring an Address Allocation Mode for an Interface Address Pool
470
Configuring Dhcp Server Security Functions
477
Configuring Ip Address Detecting
477
Enabling Unauthorized Dhcp Server Detection
477
Configuring Dhcp Accounting Functions
478
Dhcp Accounting Fundamentals
478
Introduction to Dhcp Accounting
478
Displaying and Maintaining the Dhcp Server
479
Dhcp Accounting Configuration
479
Enabling the Dhcp Server to Process Option
479
Dhcp Server Configuration Examples
480
Dhcp Server with Option 184 Support Configuration Example
482
Dhcp Accounting Configuration Example
483
Troubleshooting a Dhcp Server
485
Dhcp Relay Agent Configuration
486
Introduction to Dhcp Relay Agent
486
Dhcp Relay Agent Fundamentals
486
Dhcp Relay Agent Configuration Task List
489
Correlating a Dhcp Server Group with a Relay Agent Interface
490
Configuring Dhcp Relay Agent Security Functions
491
Configuring the Dhcp Relay Agent to Support Option
493
Configuring Dhcp Inform Message Handling Feature Used in Xrn System
494
Displaying and Maintaining Dhcp Relay Agent Configuration
494
Dhcp Relay Agent Configuration Example
495
Troubleshooting Dhcp Relay Agent Configuration
495
Dhcp Snooping Configuration
497
Introduction to Dhcp-Snooping Option
498
Introduction to Ip Filtering
500
Configuring Dhcp Snooping to Support Option
502
Configuring Ip Filtering
505
Displaying and Maintaining Dhcp Snooping Configuration
506
Dhcp Packet Rate Limit Configuration
510
Configuring Port State Auto Recovery
511
Rate Limit Configuration Example
511
Dhcp/Bootp Client Configuration
513
Configuring a Dhcp/Bootp Client
514
X Configuration
515
Bootp Client Configuration Example
515
Dhcp Client Configuration Example
515
Displaying Dhcp/Bootp Client Configuration
515
Acl Configuration
516
Acl Overview
516
Acl Matching Order
516
Ways to Apply an Acl on a Switch
517
Acl Configuration Task List
518
Configuring Basic Acl
520
Configuring Advanced Acl
521
Applying Acl Rules on Ports
527
Displaying and Maintaining Acl Configuration
529
Examples for Upper-Layer Software Referencing Acls
529
Example for Controlling Telnet Login Users by Source Ip
529
Example for Controlling Web Login Users by Source Ip
530
Examples for Applying Acls to Hardware
530
Basic Acl Configuration Example
530
Advanced Acl Configuration Example
531
Ipv6 Acl Configuration Example
533
Example for Applying an Acl to a Vlan
534
New Applications and New Requirements
535
Qos Configuration
535
Major Traffic Control Techniques
536
Qos Supported by Switch 4500 Series
537
Protocol Priority
541
Priority Marking
542
Line Rate
543
Queue Scheduling
543
Vlan Mapping
543
Congestion Avoidance
546
Configuring the Mapping between 802.1P Priority and Local Precedence
548
Setting the Priority of Protocol Packets
549
Marking Packet Priority
550
Configuring Traffic Policing
551
Configuring Queue Scheduling
553
Displaying and Maintaining Qos
557
Qos Configuration Examples
558
Configuration Example of Traffic Policing and Line Rate
558
Configuration Example of Priority Marking and Queue Scheduling
559
Configuration Procedure
561
Mirroring Configuration
563
Remote Port Mirroring
564
Port Mirroring – Stp Collaboration
565
Configuring Local Port Mirroring
566
Configuring Remote Port Mirroring
567
Displaying and Maintaining Port Mirroring
571
Mirroring Configuration Examples
571
Local Port Mirroring Configuration Example
571
Remote Port Mirroring Configuration Example
572
Establishment of an Xrn Fabric
576
How Xrn Works
579
Xrn Fabric Configuration Task List
579
Specifying the Fabric Port of a Switch
580
Specifying the Vlan Used to Form an Xrn Fabric
581
Setting a Unit ID for a Switch
582
Assigning a Unit Name to a Switch
583
Assigning an Xrn Fabric Name to a Switch
583
Setting the Xrn Fabric Authentication Mode
583
Displaying and Maintaining Xrn Fabric
584
Xrn Fabric Configuration Example
584
Network Diagram
585
Cluster Configuration
587
Cluster Overview
587
Roles in a Cluster
588
How a Cluster Works
590
Cluster Configuration Task List
595
Configuring the Management Device
595
Configuring Member Devices
600
Managing a Cluster through the Management Device
602
Configuring the Enhanced Cluster Features
603
Configuring the Cluster Synchronization Function
605
Displaying and Maintaining Cluster Configuration
609
Cluster Configuration Examples
610
Basic Cluster Configuration Example
610
Network Management Interface Configuration Example
613
Enhanced Cluster Feature Configuration Example
614
Poe Configuration
616
Poe Overview
616
Setting the Poe Mode on a Port
619
Configuring a Pd Disconnection Detection Mode
620
Configuring Poe Over-Temperature Protection on the Switch
620
Configuring the Pd Compatibility Detection Function
620
Upgrading the Pse Processing Software of Fabric Switches Online
621
Upgrading the Pse Processing Software Online
621
Poe Configuration Example
622
Displaying Poe Configuration
622
Poe Profile Configuration
624
Displaying Poe Profile Configuration
626
Poe Profile Configuration Example
626
Udp Helper Configuration
629
Configuring Udp Helper
630
Displaying and Maintaining Udp Helper
631
Udp Helper Configuration Example
631
Cross-Network Computer Search through Udp Helper
631
Snmp Configuration
632
Snmp Operation Mechanism
632
Snmp Versions
632
Supported Mibs
633
Configuring Basic Snmp Functions
633
Configuring Trap-Related Functions
635
Configuring Basic Trap Functions
635
Configuring Extended Trap Function
636
Enabling Logging for Network Management
636
Snmp Configuration Example
637
Displaying Snmp
637
Rmon Configuration
640
Commonly Used Rmon Groups
641
Displaying Rmon
643
Ntp Configuration
645
Implementation Principle of Ntp
646
Ntp Implementation Modes
647
Ntp Configuration Task List
650
Configuring Ntp Implementation Modes
650
Configuring Access Control Right
654
Configuring Ntp Authentication
655
Configuring Optional Ntp Parameters
657
Configuring an Interface on the Local Switch to Send Ntp Messages
657
Configuring the Number of Dynamic Sessions Allowed on the Local Switch
658
Disabling an Interface from Receiving Ntp Messages
658
Displaying Ntp Configuration
658
Configuring Ntp Symmetric Peer Mode
660
Configuring Ntp Broadcast Mode
662
Configuring Ntp Multicast Mode
663
Configuring Ntp Server/Client Mode with Authentication
665
Ssh Overview
667
Ssh Configuration
667
Ssh Operating Process
668
Configuring the Ssh Server
671
Configuring the User Interfaces for Ssh Clients
672
Configuring the Ssh Management Functions
673
Configuring Key Pairs
674
Configuring the Public Key of a Client on the Server
677
Assigning a Public Key to an Ssh User
678
Configuring the Ssh Client
679
Ssh Client Configuration Task List
679
Configuring an Ssh Client Assumed by an Ssh2-Capable Switch
685
Displaying and Maintaining Ssh Configuration
687
Comparison of Ssh Commands with the same Functions
688
Ssh Configuration Examples
689
When Switch Acts as Server for Local Password Authentication
689
When Switch Acts as Server for Password and Radius Authentication
691
When Switch Acts as Server for Password and Hwtacacs Authentication
696
When Switch Acts as Server for Publickey Authentication
698
When Switch Acts as Client for Password Authentication
704
When Switch Acts as Client for Publickey Authentication
705
When Switch Acts as Client and First-Time Authentication Is Not Supported
707
File System Management Configuration
710
Directory Operations
711
File Operations
711
Prompt Mode Configuration
713
Introduction to File Attributes
714
Configuring File Attributes
716
File Backup and Restoration
717
Ftp and Sftp Configuration
718
Introduction to Ftp and Sftp
718
Introduction to Sftp
719
Ftp Configuration
719
Ftp Configuration: a Switch Operating as an Ftp Server
719
Configuration Example: a Switch Operating as an Ftp Server
726
Ftp Banner Display Configuration Example
728
Sftp Configuration
731
Sftp Configuration: a Switch Operating as an Sftp Server
731
Sftp Configuration: a Switch Operating as an Sftp Client
732
Sftp Configuration Example
734
Tftp Configuration
738
Tftp Configuration: a Switch Operating as a Tftp Client
739
Tftp Configuration Example
740
Information Center Overview
743
Information Center Configuration
749
Setting to Output System Information to the Trap Buffer
754
Disabling a Port from Generating Link Up/Down Logging Information
756
Information Center Configuration Examples
757
Log Output to a Unix Log Host
757
Log Output to a Linux Log Host
759
Log Output to the Console
760
Boot Rom and Host Software Loading
762
Introduction to Loading Approaches
762
Boot Menu
763
Loading by Xmodem through Console Port
764
Loading by Tftp through Ethernet Port
768
Loading by Ftp through Ethernet Port
770
Remote Boot Rom and Software Loading
772
Remote Loading Using Ftp
772
Remote Loading Using Tftp
776
Basic System Configuration and Debugging
777
Displaying Debugging Status
779
Network Connectivity Test
780
Device Management
781
Device Management Configuration
781
Introduction to Device Management
781
Configuring Real-Time Monitoring of the Running Status of the System
782
Scheduling a Reboot on the Switch
782
Enabling Auto Power down on an Ethernet Port
783
Specifying the App to be Used at Reboot
783
Upgrading the Boot Rom
783
Identifying and Diagnosing Pluggable Transceivers
784
Upgrading the Host Software in the Fabric
784
Displaying the Device Management Configuration
785
Remote Switch App Upgrade Configuration Example
786
Scheduled Task Configuration
789
Scheduled Task Configuration Example
790
Configuring the Tpid Value for Vlan-Vpn Packets on a Port
794
Enabling the Vlan-Vpn Feature for a Port
794
Inner-To-Outer Tag Priority Replicating and Mapping
794
Vlan-Vpn Configuration Task List
794
Configuring the Inner-To-Outer Tag Priority Replicating and Mapping Feature
795
Displaying and Maintaining Vlan-Vpn Configuration
796
Vlan-Vpn Configuration Example
796
Transmitting User Packets through a Tunnel in the Public Network by Using Vlan-Vpn
796
Selective Qinq Configuration
799
Enabling the Selective Qinq Feature for a Port
801
Selective Qinq Configuration Task List
801
Enabling the Inter-Vlan Mac Address Replicating Feature
802
Selective Qinq Configuration Example
802
Processing Private Network Packets by Their Types
802
Remote-Ping Configuration
806
Displayed Information
809
Ipv6 Configuration
810
Ipv6 Overview
810
Ipv6 Features
810
Introduction to Ipv6 Address
811
Introduction to Ipv6 Neighbor Discovery Protocol
814
Protocols and Standards
816
Ipv6 Configuration Task List
817
Configuring an Ipv6 Unicast Address
817
Configuring Ipv6 Ndp
819
Configuring a Static Ipv6 Route
821
Configuring Ipv6 Tcp Properties
821
Configuring the Hop Limit of Icmpv6 Reply Packets
822
Configuring the Maximum Number of Ipv6 Icmp Error Packets Sent Within a Specified Time
822
Ipv6 Configuration Example
823
Displaying and Maintaining Ipv
823
Ipv6 Unicast Address Configuration
823
Ipv6 Application Configuration
827
Ipv6 Ping
827
Ipv6 Tftp
828
Ipv6 Traceroute
828
Ipv6 Telnet
829
Ipv6 Application Configuration Example
830
Ipv6 Applications
830
Unable to Ping a Remote Destination
831
Unable to Run Telnet
832
Unable to Run Tftp
832
Unable to Run Traceroute
832
Password Control Configuration Operations
833
Configuring Password Aging
835
Password Control Configuration
835
Configuring the Limitation of Minimum Password Length
837
Configuring History Password Recording
838
Configuring a User Login Password in Interactive Mode
839
Configuring Login Attempt Times Limitation and Failure Processing Mode
839
AAA Configuration
840
Configuring the Password Authentication Timeout Time
840
Configuring Password Composition Policies
841
Displaying Password Control
842
Password Control Configuration Example
842
Access Management Configuration
844
Access Management Configuration Examples
845
Combining Access Management with Port Isolation
846
Lldp Configuration
849
Configuring Access Management
845
Device Management
851
Operating Modes of Lldp
853
How Lldp Works
854
Lldp Configuration Task List
854
Performing Basic Lldp Configuration
855
Enabling Lldp
855
Setting Lldp Operating Mode
855
Setting the Lldp Re-Initialization Delay
855
Enabling Lldp Polling
856
Configuring the Tlvs to be Advertised
856
Configuring the Management Address
856
Setting Other Lldp Parameters
857
Setting an Encapsulation Format for Lldpdus
858
Configuring Lldp Trapping
859
Displaying and Maintaining Lldp
860
Basic Lldp Configuration Example
860
Lldp Configuration Examples
860
Cdp-Compatible Lldp Configuration Example
863
Pki Configuration
865
Pki Terms
865
Architecture of Pki
866
Applications of Pki
867
Operation of Pki
867
Pki Configuration Task List
868
Configuring an Entity Dn
868
Configuring a Pki Domain
870
Submitting a Pki Certificate Request
871
Submitting a Certificate Request in Auto Mode
871
Submitting a Certificate Request in Manual Mode
872
Retrieving a Certificate Manually
873
Configuring Pki Certificate Verification
874
Destroying a Local Rsa Key Pair
875
Deleting a Certificate
875
Configuring an Access Control Policy
876
Displaying and Maintaining Pki
876
Pki Configuration Examples
877
Requesting a Certificate from a Ca Running Rsa Keon
877
Requesting a Certificate from a Ca Running Windows 2003 Server
880
Troubleshooting Pki
883
Failed to Retrieve a Ca Certificate
883
Failed to Request a Local Certificate
884
Failed to Retrieve Crls
884
Ssl Configuration
886
Ssl Overview
886
Ssl Configuration Task List
887
Configuring an Ssl Server Policy
887
Ssl Protocol Stack
887
Ssl Server Policy Configuration Example
889
Configuring an Ssl Client Policy
891
Configuration Prerequisites
891
Displaying and Maintaining Ssl
892
Troubleshooting Ssl
892
Ssl Handshake Failure
892
Https Configuration
894
Associating the Https Service with an Ssl Server Policy
895
Enabling the Https Service
895
Associating the Https Service with a Certificate Attribute Access Control Policy
896
Associating the Https Service with an Acl
896
Displaying and Maintaining Https
896
Https Configuration Example
897
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3Com 4500 PWR 26-Port Specifications
General
Brand
3Com
Model
4500 PWR 26-Port
Category
Network Router
Language
English
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