Accton Technology ES4626 Programming manual

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ES4626/ES4650
Layer 3 Gigabit Switch Management Guide
www.edge-core.com

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Preface
ES4626/ES4650 is a routing switch that can be deployed as the core layer device for campus and
enterprise networks, or as an aggregation device for IP metropolitan area networks (MAN). The
ES4626 provides 24 fixed 1000MB port (4 of which are fixed 1000MB Combo fiber cable
port/copper cable ports) and 2 10GB XFP ports. The ES4650 provides 48 fixed 1000MB port (4 of
which are fixed 1000MB Combo fiber cable port/copper cable ports) and 2 10GB XFP ports.
ES4626/ES4650 can seamlessly support various network interfaces from 100Mb, 1000Mb to
10Gb Ethernets.
We are providing this manual for your better understanding, usage and maintenance of the
ES4626/ES4650. We strongly recommend you to read through this manual carefully before the
installation and configuration to avoid possible damage and malfunction to the switch. Thank you
for your choice and purchase of this networking product from Accton Technology Corp. We
sincerely hope our products and services satisfy you.

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Contents
Preface 2
Contents 3
Chapter 1 Switch Management _________________________________________ 12
1.1 Management Options ____________________________________________ 12
1.1.1 Out-of-band Management ____________________________________________ 12
1.1.2 In-band Management________________________________________________ 15
1.2 Management Interface____________________________________________ 21
1.2.1 CLI Interface ______________________________________________________ 21
1.2.2 WEB Interface _____________________________________________________ 28
Chapter 2 Basic Switch Configuration ____________________________________ 30
2.1 Basic Switch Configuration Commands ___________________________ 30
2.1.1 calendar set ________________________________________________________ 30
2.1.2 config _____________________________________________________________ 30
2.1.3 enable_____________________________________________________________ 31
2.1.4 disable ____________________________________________________________ 31
2.1.5 enable password ____________________________________________________ 31
2.1.6 exec timeout________________________________________________________ 32
2.1.7 exit _______________________________________________________________ 33
2.1.8 help_______________________________________________________________ 33
2.1.9 ip host ____________________________________________________________ 33
2.1.10 hostname __________________________________________________________ 34
2.1.11 uername password __________________________________________________ 34
2.1.12 uername nopassword ________________________________________________ 35
2.1.13 username access-level________________________________________________ 35
2.1.14 reload_____________________________________________________________ 35
2.1.15 set default _________________________________________________________ 36
2.1.16 setup______________________________________________________________ 36
2.1.17 language___________________________________________________________ 36
2.1.18 write______________________________________________________________ 36
2.2 Maintenance and Debug Commands ______________________________ 37
2.2.1 ping ______________________________________________________________ 37
2.2.2 Telnet _____________________________________________________________ 38
2.2.3 SSH ______________________________________________________________ 41

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2.2.4 traceroute _________________________________________________________ 46
2.2.5 show______________________________________________________________ 47
2.2.6 debug _____________________________________________________________ 53
2.3 Configuring Switch IP Addresses _________________________________ 53
2.3.1 Configuring Switch IPAddresses Task Sequence _________________________ 53
2.3.2 Commands for Configuring Switch IPAddresses _________________________ 54
2.4 SNMP___________________________________________________________ 56
2.4.1 Introduction to SNMP _______________________________________________ 56
2.4.2 Introduction to MIB_________________________________________________ 57
2.4.3 Introduction to RMON ______________________________________________ 58
2.4.4 SNMPConfiguration ________________________________________________ 59
2.4.5 Typical SNMP Configuration Examples_________________________________ 66
2.4.6 SNMPTroubleshooting Help__________________________________________ 67
2.5 Switch Upgrade__________________________________________________ 72
2.5.1 BootROM Upgrade _________________________________________________ 72
2.5.2 FTP/TFTP Upgrade _________________________________________________ 75
2.6 WEB Management _______________________________________________ 90
2.6.1 Switch Basic Configuration ___________________________________________ 90
2.6.2 SNMPConfiguration ________________________________________________ 91
2.6.3 Switch Upgrade_____________________________________________________ 93
2.6.4 Monitor and debug command _________________________________________ 95
2.6.5 Switch basic information _____________________________________________ 97
2.6.6 Switch on-off configuration ___________________________________________ 98
2.6.7 Switch maintenance _________________________________________________ 98
2.6.8 Telnet service configuration___________________________________________ 99
2.6.9 username service____________________________________________________ 99
2.6.10 Basic host configuration_____________________________________________ 100
Chapter 3 Port Configuration__________________________________________ 101
3.1 Introduction to Port _____________________________________________ 101
3.2 Port Configuration ______________________________________________ 101
3.2.1 Network Port Configuration _________________________________________ 101
3.2.2 VLAN Interface Configuration_______________________________________ 109
3.2.3 Port Mirroring Configuration_________________________________________112
3.3 Port Configuration Example _____________________________________ 114
3.4 Port Troubleshooting Help_______________________________________ 115

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3.4.1 Monitor and Debug Commands _______________________________________115
3.4.2 Port Troubleshooting Help____________________________________________116
3.5 WEB Management ______________________________________________ 116
3.5.1 Ethenet port configuration ___________________________________________116
3.5.2 Vlan interface configuration __________________________________________118
3.5.3 Port mirroring configuration_________________________________________ 120
3.5.4 Port debug and maintenance_________________________________________ 120
Chapter 4 MAC Table Configuration ____________________________________ 123
4.1 Introduction to MAC Table_______________________________________ 123
4.1.1 Obtaining MAC Table ______________________________________________ 123
4.1.2 Forward or Filter __________________________________________________ 125
4.2 MAC Table Configuration________________________________________ 126
4.2.1 mac-address-table aging-time ________________________________________ 126
4.2.2 mac-address-table static_____________________________________________ 126
4.2.3 mac-address-table discard___________________________________________ 127
4.3 Typical Configuration Examples _________________________________ 128
4.4 Troubleshooting Help ___________________________________________ 128
4.4.1 Monitor and Debug Commands ______________________________________ 128
4.4.2 Troubleshooting Help_______________________________________________ 129
4.5 MAC Address Function Extension________________________________ 129
4.5.1 MACAddress Binding ______________________________________________ 129
4.6 WEB Management ______________________________________________ 137
4.6.1 MAC address table configuration_____________________________________ 137
4.6.2 MAC address table configuration_____________________________________ 140
Chapter 5 VLAN Configuration ________________________________________ 145
5.1 Introduction to VLAN____________________________________________ 145
5.2 VLAN Configuration_____________________________________________ 146
5.2.1 VLAN Configuration Task Sequence __________________________________ 146
5.2.2 VLAN Configuration Commands_____________________________________ 148
5.2.3 Typical VLANApplication___________________________________________ 152
5.3 GVRP Configuration ____________________________________________ 154
5.3.1 GVRPConfiguration Task Sequence __________________________________ 155
5.3.2 GVRPCommands _________________________________________________ 156
5.3.3 Typical GVRPApplication___________________________________________ 158

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5.4 VLAN Troubleshooting Help _____________________________________ 160
5.4.1 Monitor and Debug Information______________________________________ 160
5.4.2 VLAN Troubleshooting Help_________________________________________ 162
5.5 WEB Management ______________________________________________ 162
5.5.1 Vlan configuration _________________________________________________ 162
5.5.2 GVRP configuration________________________________________________ 168
5.5.3 VLAN debug and maintenance_______________________________________ 169
Chapter 6 MSTP Configuration ________________________________________ 171
6.1 MSTP Introduction ______________________________________________ 171
6.1.1 MSTPRegion _____________________________________________________ 171
6.1.2 Port Roles ________________________________________________________ 173
6.1.3 MSTPLoad Balance________________________________________________ 173
6.2 Configuring MSTP ______________________________________________ 173
6.2.1 MSTPConfiguration Task Sequence __________________________________ 173
6.2.2 MSTPConfiguration Command______________________________________ 176
6.3 MSTP Example _________________________________________________ 184
6.4 MSTP Troubleshooting __________________________________________ 189
6.4.1 Monitoring And Debugging Command ________________________________ 189
6.4.2 MSTPTroubleshooting Help _________________________________________ 193
Chapter 7 IGMP Snooping Configuration ________________________________ 194
7.1 Introduction to IGMP Snooping __________________________________ 194
7.2 IGMP Snooping Configuration ___________________________________ 194
7.2.1 IGMP Snooping Configuration Task __________________________________ 194
7.2.2 IGMPSnooping Configuration Command______________________________ 196
7.3 IGMP Snooping Example ________________________________________ 199
7.4 IGMP Snooping Troubleshooting Help____________________________ 202
7.4.1 Monitor and Debug Commands ______________________________________ 202
7.4.2 IGMP Snooping Troubleshooting Help_________________________________ 206
7.5 Web Management_______________________________________________ 206
7.5.1 Enable IGMPSnooping on the switch _________________________________ 206
7.5.2 IGMP Snooping Configuration _______________________________________ 206
7.5.3 IGMP Snooping static multicast configuration __________________________ 208
Chapter 8 802.1X CONFIGURATION ___________________________________ 210
8.1 802.1X Introduction _____________________________________________ 210

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8.2 802.1X Configuration____________________________________________ 211
8.2.1 802.1X Configuration Task Sequence___________________________________211
8.2.2 802.1X Configuration Command _____________________________________ 216
8.3 802.1X Apply Example___________________________________________ 226
8.4 802.1X Trouble Shooting ________________________________________ 227
8.4.1 802.1X Debug and Monitor Command_________________________________ 227
8.4.2 802.1X Troubleshooting _____________________________________________ 232
8.5 WEB Management ______________________________________________ 233
8.5.1 RADIUS client configuration ________________________________________ 233
8.5.2 802.1X Configuration_______________________________________________ 235
Chapter 9 ACL Configuration__________________________________________ 239
9.1 Introduction to ACL _____________________________________________ 239
9.1.1 Access list_________________________________________________________ 239
9.1.2 Access-group______________________________________________________ 239
9.1.3 Access listAction and Global DefaultAction____________________________ 240
9.2 ACL configuration ______________________________________________ 240
9.2.1 ACLConfiguration Task Sequence____________________________________ 240
9.2.2 ACLConfiguration Commands ______________________________________ 244
9.3 ACL Example___________________________________________________ 249
9.4 ACL Troubleshooting Help_______________________________________ 250
9.4.1 ACLDebug and Monitor Commands__________________________________ 250
9.4.2 ACLTroubleshooting Help __________________________________________ 252
9.5 Web Management_______________________________________________ 252
9.5.1 Add standard numeric IPACL configuration ___________________________ 253
9.5.2 Delete standard numeric IPACL configuration _________________________ 253
9.5.3 Extended numeric ACL configuration _________________________________ 253
9.5.4 Standard ACL name configuration____________________________________ 255
9.5.5 Extended ACL name configuration____________________________________ 256
9.5.6 Firewall configuration ______________________________________________ 256
9.5.7 ACLport binding configuration ______________________________________ 257
Chapter 10 Port Channel Configuration __________________________________ 258
10.1 Introduction to Port Channel___________________________________ 258
10.2 Port Channel Configuration____________________________________ 259
10.2.1 Port Channel Configuration Task Sequence ____________________________ 259
10.2.2 Port Channel Configuration Commands _______________________________ 260

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10.3 Port Channel Example_________________________________________ 262
10.4 Port Channel Troubleshooting Help ____________________________ 264
10.4.1 Monitor and Debug Commands ______________________________________ 264
10.4.2 Port Channel Troubleshooting Help ___________________________________ 269
10.5 Web Management_____________________________________________ 270
10.5.1 LACP port group configuration ______________________________________ 270
10.5.2 LACP port configuration____________________________________________ 271
Chapter 11 DHCP Configuration ________________________________________ 272
11.1 Introduction to DHCP ___________________________________________ 272
11.2 DHCP Server Configuration______________________________________ 273
11.2.1 DHCPSever Configuration Task Sequence _____________________________ 273
11.2.2 DHCPServer Configuration Commands_______________________________ 275
11.3 DHCP Relay Configuration_______________________________________ 284
11.3.1 DHCP Relay Configuration Task Sequence _____________________________ 285
11.3.2 DHCPRelay Configuration Command ________________________________ 285
11.4 DHCP Configuration Example____________________________________ 287
11.5 DHCP Troubleshooting Help _____________________________________ 289
11.5.1 Monitor and Debug Commands ______________________________________ 289
11.5.2 DHCPTroubleshooting Help_________________________________________ 294
11.6 WEB Management ______________________________________________ 294
11.6.1 DHCPserver configuration __________________________________________ 294
11.6.2 DHCP relay configuration ___________________________________________ 301
11.6.3 DHCPdebugging __________________________________________________ 302
Chapter 12 SNTP Configuration ________________________________________ 304
12.1 SNTP Configuration Commands _______________________________ 304
12.1.1 sntp server________________________________________________________ 304
12.1.2 sntp poll__________________________________________________________ 304
12.1.3 clock timezone_____________________________________________________ 305
12.2 Typical SNTP Configuration Examples__________________________ 306
12.3 SNTP Troubleshooting Help ___________________________________ 306
12.3.1 Monitor and Debug Commands ______________________________________ 306
12.4 WEB Management ____________________________________________ 307
12.4.1 SNTP/NTP server configuration_________________________________________ 307
12.4.2 Request interval configuration __________________________________________ 307

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12.4.3 Time difference_______________________________________________________ 308
12.4.4 Show sntp ___________________________________________________________ 308
Chapter 13 QoS Configuration _________________________________________ 309
13.1 QoS__________________________________________________________ 309
13.1.1 Introduction to QoS ________________________________________________ 309
13.1.2 QoS Configuration __________________________________________________311
13.1.3 QoS Example______________________________________________________ 325
13.1.4 QoS Troubleshooting Help___________________________________________ 327
13.1.5 Web Management__________________________________________________ 333
13.2 PBR__________________________________________________________ 345
13.2.1 PBR Introduction __________________________________________________ 345
13.2.2 PBR Configuration_________________________________________________ 345
13.2.3 PBR Example _____________________________________________________ 349
Chapter 14 L3 Forward Configuration ____________________________________ 351
14.1 Layer3 Interface ______________________________________________ 351
14.1.1 Introduction to Layer3 Interface _____________________________________ 351
14.1.2 Layer3 interface configuration _______________________________________ 352
14.2 IP Forwarding ________________________________________________ 353
14.2.1 Introduction to IP Forwarding _______________________________________ 353
14.2.2 IPRouteAggregation Configuration __________________________________ 353
14.2.3 IP Forwarding Troubleshooting Help__________________________________ 354
14.3 ARP__________________________________________________________ 356
14.3.1 Introduction to ARP________________________________________________ 356
14.3.2 ARP configuration _________________________________________________ 357
14.3.3 ARP Forwarding Troubleshooting Help________________________________ 358
Chapter 15 Routing Protocol Configuration________________________________ 361
15.1 Route Table __________________________________________________ 361
15.2 Static Route __________________________________________________ 362
15.2.1 Introduction to Static Route _________________________________________ 362
15.2.2 Introduction to Default Route ________________________________________ 363
15.2.3 Static Route Configuration __________________________________________ 363
15.2.4 Configuration Scenario _____________________________________________ 366
15.2.5 Troubleshooting Help_______________________________________________ 367
15.3 RIP __________________________________________________________ 367
15.3.1 Introduction to RIP ________________________________________________ 367

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15.3.2 RIPConfiguration _________________________________________________ 369
15.3.3 Typical RIP Scenario _______________________________________________ 385
15.3.4 RIPTroubleshooting Help ___________________________________________ 387
15.4 OSPF ________________________________________________________ 389
15.4.1 Introduction to OSPF_______________________________________________ 389
15.4.2 OSPF Configuration________________________________________________ 392
15.4.3 Typical OSPF Scenario______________________________________________ 417
15.4.4 OSPFTroubleshooting Help _________________________________________ 424
15.5 Web Management_____________________________________________ 433
15.5.1 Static route _______________________________________________________ 433
15.5.2 RIP______________________________________________________________ 434
15.5.3 OSPF ____________________________________________________________ 438
Chapter 16 Multicast Protocol Configuration _______________________________ 447
16.1 Multicast Protocol Overview ___________________________________ 447
16.1.1 Introduction to Multicast____________________________________________ 447
16.1.2 MulticastAddress__________________________________________________ 448
16.1.3 IP Multicast Packets Forwarding _____________________________________ 449
16.1.4 Application of Multicast_____________________________________________ 449
16.2 Common Multicast Configurations _____________________________ 450
16.2.1 Common Multicast Configuration Commands __________________________ 450
16.3 PIM-DM ______________________________________________________ 451
16.3.1 Introduction to PIM-DM ____________________________________________ 451
16.3.2 PIM-DM Configuration_____________________________________________ 452
16.3.3 Typical PIM-DM Scenario___________________________________________ 454
16.3.4 PIM-DM Troubleshooting Help ______________________________________ 455
16.4 PIM-SM_______________________________________________________ 459
16.4.1 Introduction to PIM-SM ____________________________________________ 459
16.4.2 PIM-SM Configuration _____________________________________________ 460
16.4.3 Typical PIM-SM Scenario ___________________________________________ 465
16.4.4 PIM-SM Troubleshooting Help_______________________________________ 467
16.5 DVMRP_______________________________________________________ 472
16.5.1 Introduction to DVMRP ____________________________________________ 472
16.5.2 DVMRP configuration ______________________________________________ 473
16.5.3 Typical DVMRPScenario ___________________________________________ 480
16.5.4 DVMRPTroubleshooting Help _______________________________________ 480

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16.6 IGMP_________________________________________________________ 485
16.6.1 Introduction to IGMP ______________________________________________ 485
16.6.2 IGMP configuration ________________________________________________ 486
16.6.3 Typical IGMPScenario _____________________________________________ 492
16.6.4 IGMPTroubleshooting Help _________________________________________ 492
16.7 web Management _____________________________________________ 495
16.7.1 Multicast common configuration _____________________________________ 495
16.7.2 PIM-DM configuration _____________________________________________ 496
16.7.3 PIM-SM configuration______________________________________________ 496
16.7.4 DVMRP configuration ______________________________________________ 498
16.7.5 IGMP configuration ________________________________________________ 500
16.7.6 Multicast inspect and debug _________________________________________ 501
Chapter 17 VRRP Configuration ________________________________________ 503
17.1 Introduction to VRRP__________________________________________ 503
17.2 VRRP Configuration___________________________________________ 504
17.2.1 VRRPConfiguration Task Sequence __________________________________ 504
17.2.2 VRRPConfiguration Commands _____________________________________ 505
17.2.3 Typical VRRPApplication___________________________________________ 510
17.2.4 VRRPTroubleshooting Help __________________________________________511
Chapter 18 Cluster Network Management ________________________________ 514
18.1 Introduction to cluster network management____________________ 514
18.2 Basic Cluster Network Management Configuration ______________ 515
18.2.1 Cluster Network Management Configuration Sequence __________________ 515
18.2.2 Cluster Configuration Commands ____________________________________ 517

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Chapter 1 Switch Management
1.1 Management Options
After purchasing the switch, the user needs to configure the switch for network
management. ES4626/ES4650 provides two management options: in-band management
and out-of-band management.
1.1.1 Out-of-band Management
Out-of-band management is the management through Console interface. Generally,
the user will use out-of-band management for the initial switch configuration, or when
in-band management is not available. For instance, the user must assign an IP address to
the switch via the Console interface to be able to access the switch through Telnet.
The procedures for managing the switch via Console interface are listed below:
Step 1: setting up the environment:
Fig 1-1 Out-of-band Management Configuration Environment
As shown in Fig 1-1, the serial port (RS-232) is connected to the switch with the serial
cable provided. The table below lists all the devices used in the connection.
Device Name Description
PC machine Has functional keyboard and RS-232, with terminal
emulator installed, such as HyperTerminal included in
Windows 9x/NT/2000/XP.
Connect with serial port

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Serial port cable One end attach to the RS-232 serial port, the other end to
the Console port.
ES4626/ES4650 Functional Console port required.
Step 2 Entering the HyperTerminal
Open the HyperTerminal included in Windows after the connection established. The
example below is based on the HyperTerminal included in Windows XP.
1) Click Start menu - All Programs – Accessories – Communication - HyperTerminal.
Fig 1-2 Opening HyperTerminal (1)
2) Type a name for opening HyperTerminal, such as “Switch”.
Fig 1-3 Opening HyperTerminal (2)
3) In the “Connecting with” drop-list, select the RS-232 serial port used by the PC, e.g.
COM1, and click “OK”.

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Fig 1-4 Opening HyperTerminal (3)
4) COM1 property appears, select “9600” for “Baud rate”, “8” for “Data bits”, “none” for
“Parity checksum”, “1” for stop bit and “none” for traffic control; or, you can also click
“Revert to default” and click “OK”.
Fig 1-5 Opening HyperTerminal (4)
Step 3 Entering switch CLI interface:

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Power on the switch. The following appears in the HyperTerminal windows, that is the
CLI configuration mode for ES4626.
ES4626 Management Switch
Copyright (c) 2001-2004 by Accton Technology Corporation.
Allrightsreserved.
Reset chassis ... done.
TestingRAM...
134,217,728 RAM OK.
Initializing...
Attaching to file system ... done.
Loading nos.img ... done.
Starting at 0x10000...
Current time is WED APR 20 09: 37: 52 2005
ES4626 Series Switch Operating System, Software Version ES4626 1.1.0.0,
Copyright (C) 2001-2006 by Accton Technology Corporation
http: //www.edge-core. com.
ES4626 Switch
26 Ethernet/IEEE 802.3 interface(s)
Press ENTER to start session
The user can now enter commands to manage the switch. For a detailed description for
the commands, please refer to the following chapters.
1.1.2 In-band Management
In-band management refers to the management by login to the switch using Telnet.
In-band management enables management of the switch for some devices attached to

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the switch. In the case when in-band management fails due to switch configuration
changes, out-of-band management can be used for configuring and managing the switch.
1.1.2.1 Management via Telnet
To manage the switch with Telnet, the following conditions should be met:
1) Switch has an IP address configured
2) The host IP address (Telnet client) and the switch’s VLAN interface IP address is
in the same network segment.
3) If not 2), Telnet client can connect to an IP address of the switch via other devices,
such as a router.
ES4626/ES4650 is a Layer 3 switch that can be configured with several IP addresses.
The following example assumes the shipment status of the switch where only VLAN1
exists in the system.
The following describes the steps for a Telnet client to connect to the switch’s VLAN1
interface by Telnet.
Fig 1-6 Manage the switch by Telnet
Step 1: Configure the IP addresses for the switch
First is the configuration of host IP address. This should be within the same network
segment as the switch VLAN1 interface IP address. Suppose the switch VLAN interface IP
address 10.1.128.251/24. Then, a possible host IP address is 10.1.128.252/24. Run “ping
10.1.128.251” from the host and verify the result, check for reasons if ping failed.
The IP address configuration commands for VLAN1 interface are listed below. Before
in-band management, the switch must be configured with an IP address by out-of-band
connect with serial
port cable

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management (i.e. Console mode), The configuration commands are as follows (All switch
configuration prompts are assumed to be “switch” hereafter if not otherwise specified):
Switch>
Switch>en
Switch#config
Switch(Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip address 10.1.128.251 255.255.255.0
Switch(Config-If-Vlan1)#no shutdown
Step 2: Run Telnet Client program.
Run Telnet client program included in Windows with the specified Telnet target.
Fig 1-7 Run telnet client program included in Windows
Step 3: Login to the switch
Login to the Telnet configuration interface. Valid login name and password are required,
otherwise the switch will reject Telnet access. This is a method to protect the switch from
unauthorized access. As a result, when Telnet is enabled for configuring and managing
the switch, username and password for authorized Telnet users must be configured with
the following command:
telnet-user <user> password {0|7} <password>.
Assume an authorized user in the switch has a username of “test”, and password of “test”,
the configuration procedure should like the following:
Switch>en
Switch#config
Switch(Config)#telnet-user test password 0 test
Enter valid login name and password in the Telnet configuration interface, Telnet user

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will be able to enter the switch’s CLI configuration interface. The commands used in the
Telnet CLI interface after login is the same as in that in the Console interface.
Fig 1-8 Telnet Configuration Interface
1.1.2.2 Management via HTTP
To manage the switch via HTTP, the following conditions should be met:
1) Switch has an IP address configured
2) The host IP address (HTTP client) and the switch’s VLAN interface IP address
are in the same network segment;
3) If 2) is not met, HTTP client should connect to an IP address of the switch via
other devices, such as a router.
Similar to management via Telnet, as soon as the host succeeds to ping an IP
address of the switch and to type the right login password, it can access the switch via
HTTP. The configuration sequence is as below:
Step 1: Configure the IP addresses for the switch and start the HTTP function on the
switch.
For configuring the IP address on the switch through out-of-band management, see
the relevant chapter.
To enable the WEB configuration, users should type the CLI command ip http server
in the global mode as below:
Switch>en
Switch#config

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Switch(Config)#ip http server
Step 2: Run HTTP protocol on the host.
Open the Web browser on the host and type the IP address of the switch. Or run
directly the HTTP protocol on the Windows. For example, the IP address of the switch is
“10.1.128.251”.
Fig 1-9 Run HTTP Protocol
Step 3: Logon to the switch
To logon to the HTTP configuration interface, valid login user name and password are
required; otherwise the switch will reject HTTP access. This is a method to protect the
switch from the unauthorized access. Consequently, in order to configure the switch via
HTTP, username and password for authorized HTTP users must be configured with the
following command in the global mode:
username <username> password <show_flag> <password>.Suppose an
authorized user in the switch has a username as “test”, and password as “test”. The
configuration procedure is as below:
Switch>en
Switch#config
Switch(Config)# username test password 0 test
The Web login interface is as below:

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Fig 1-10 Web Login Interface
Input the right username and password, and then the main Web configuration
interface is shown as below.