Intellisystem IT-ES5028-IM-4GS Series User manual

IT-ES5028-IM-4GS Series
Managed Industrial Ethernet Switches
CLI User Manual

Statement
Copyright Notice
Information in this document is reserved by Intellisystem Technologies.
Reproduction and extract without permission is prohibited.
Agreement
As the product version upgrades or other reasons, this document is subject to change
without notice. Unless other agreement, this document only as a guide to use. All
statement, information and suggestion in this document, without warranty of any
kind, either expressed or implied.
Revision History
Version No.
Date
Reason
V1.0.0
2015-04-01
Creating Documents
Notes
In reading this manual, please pay attention to the following symbols,
Information necessary to explain
Special attention

Content
CHAPTER 1 LOGIN ETHERNET SWITCH................................................................................................................... 1
1.1 CONFIGURATION THROUGH CONSOLE PORT................................................................................................................... 1
1.2 CONFIGURATION THROUGH TELNET .............................................................................................................................. 3
1.3 AGREEMENT.................................................................................................................................................................. 5
1.4 COMMAND LINE PORT.................................................................................................................................................... 6
1.4.1 View of Command Lines .............................................................................................................................. 6
1.4.2 Command lines Online help................................................................................................................................. 8
1.4.3 Frequent Incorrect Information of Command Lines ....................................................................................... 10
1.4.4 History command ......................................................................................................................................... 10
CHAPTER 2 DEVICE SYSTEM BASED INFORMATION CONFIGURATION .................................................... 11
2.1 ENTER INTO THE VIEW OF DEVICE INFORMATION.................................................................................................... 11
2.2 DISPLAYDEVICE INFORMATION................................................................................................................................. 11
2.3 CONFIGURATION INFORMATION................................................................................................................................ 12
2.4 DELETE DEVICE INFORMATION ................................................................................................................................. 13
CHAPTER 3 PORTCONFIGURATION ........................................................................................................................ 14
3.1 PORT INFORMATION................................................................................................................................................... 14
3.2 DISPLAYPORT CONFIGURATION INFORMATION........................................................................................................ 14
3.3 PORT CONFIGURATION............................................................................................................................................... 14
3.4 TO ENABLE OR DISABLE THE PORT............................................................................................................................ 15
3.5 CONFIGURE THEPORT SPEED AND DUPLEXMODE.................................................................................................... 15
3.6 CONFIGURE THEPORTFLOW CONTROL.................................................................................................................... 15
CHAPTER 4 BANDWIDTH MANAGEMENT.............................................................................................................. 16
4.1 ENTER RATE MANAGEMENT VIEW................................................................................................................................ 16
4.2 EGRESS BANDWIDTHCONFIGURATION ..................................................................................................................... 16
4.3 INGRESS BANDWIDTH CONFIGURATION.................................................................................................................... 17
4.4 DISPLAYS THE BANDWIDTH CONFIGURATION INFORMATION .................................................................................. 17
CHAPTER 5 BROADCAST STORM SET...................................................................................................................... 18
5.1 SET THE VIEW INTO THE BROADCAST STORM........................................................................................................... 18
5.2 SHOW BROADCAST STORM SET.................................................................................................................................. 18
5.3 CLOSE BROADCAST STORM INHIBITION.................................................................................................................... 18
5.4 SET BROADCAST STORM INHIBITION......................................................................................................................... 18
CHAPTER 6 VLAN............................................................................................................................................................ 20
6.1 INTRODUCTION TO VLAN......................................................................................................................................... 20
6.2 THE CONTENTS OF VLAN CONFIGURATION............................................................................................................. 20
6.3 VLAN INFORMATION VIEW......................................................................................................................................... 20

6.4 ENTER THE PORT CONFIGURATION VIEWBASED ON VLAN...................................................................................... 21
6.5 ENTER CONFIGURATION VIEWBASED ON 802.1QVLAN........................................................................................... 21
CHAPTER 7 MULTICAST FILTERING VIEW........................................................................................................... 23
7.1 ENTER THE MULTICAST FILTERING VIEW................................................................................................................. 23
7.2 CONFIGUREMULTICASTFILTERING TYPE................................................................................................................. 23
7.3 IGMP LISTEN AND CHECK ................................................................................................................................. 23
7.4DISPLAY IGMP INFORMATION ......................................................................................................................... 24
7.5 THE GMRP CONFIGURATION ........................................................................................................................... 24
CHAPTER 8 QOS............................................................................................................................................................... 25
8.1 ENTER THE MULTICAST FILTERING VIEW................................................................................................................. 25
8.2 ENABLE DSCP /COS............................................................................................................................................. 25
8.3 QOSQUEUE CONFIGURATION ........................................................................................................................... 25
8.4 THE VALUE OF DSCP/TOS MAPPING ................................................................................................................ 26
8.5 THE DEFAULT PORT PRIORITY ALLOCATION ................................................................................................ 26
8.6 QOS CONFIGURATION INFORMATION ............................................................................................................. 26
CHAPTER 9 RING CONFIGURATION ........................................................................................................................ 28
9.1 ENTER THE RING NETWORK CONFIGURATION VIEW................................................................................................ 28
9.2 RING NETWORK STATE INFORMATION VIEW ................................................................................................ 28
9.3 TO ENABLE OR DISABLE THE RING.................................................................................................................. 28
9.4 THE RING3CONFIGURATION ............................................................................................................................ 29
9.5 RING NETWORK CONFIGURATION INFORMATION ....................................................................................... 30
9.6 THE RSTP CONFIGURATION.............................................................................................................................. 30
9.7 DISPLAY THE CURRENT STATE OF THE RSTP INFORMATION ................................................................... 31
CHAPTER 10 TRUNK CONFIGURATION .................................................................................................................. 32
10.1 ENTER THE PORT TRUNK VIEW............................................................................................................................... 32
10.2 PORT TRUNK CONFIGURATION /DELETE .................................................................................................... 32
10.3 DISPLAY PORT TRUNK CONFIGURATION INFORMATION ......................................................................... 32
CHAPTER 11 MAC PORT LOCK .................................................................................................................................. 33
11.1 ENTER THE MAC PORT LOCK VIEW........................................................................................................................ 33
11.2 MAC PORT LOCKING INFORMATION DISPLAY........................................................................................... 33
11.3 ADD OR REMOVE MAC PORT LOCKING INFORMATION .......................................................................... 33
CHAPTER 12 EMAIL ALARM CONFIGURATION................................................................................................... 34
12.1 ENTER THE EMAILALARM VIEW............................................................................................................................. 34
12.2 DISPLAYS THE EMAIL ALARM INFORMATION.............................................................................................. 34
12.3 CONFIGURE EMAIL ALARM INFORMATION ................................................................................................. 34
CHAPTER 13 ALARM CONFIGURATION.................................................................................................................. 35
13.1 ENTER THE ALARM INFORMATION VIEW ................................................................................................................ 35

13.2 ALARM CONFIGURATION /DELETE ............................................................................................................... 35
13.3 DISPLAYTHE ALARM INFORMATION ....................................................................................................................... 36
CHAPTER 14 PORT MIRRORING................................................................................................................................ 37
14.1 ENTER THE PORT MIRRORING VIEW........................................................................................................................ 37
14.2 PORT MIRRORING CONFIGURATION /DELETE........................................................................................................ 37
14.3 DISPLAYPORT MIRRORING INFORMATION.............................................................................................................. 38
CHAPTER 15 TIME CONFIGURATION ...................................................................................................................... 39
15.1 IN VIEW OF THE TIME CONFIGURATION.................................................................................................................. 39
15.2 THE ALLOCATION OF TIME ALLOCATION VIEW ...................................................................................................... 39
CHAPTER 16 STATIC MULTICAST CONFIGURATION......................................................................................... 40
16.1 IN THE STATIC MULTICAST ADDRESS FILTER CONFIGURATION VIEW .................................................................... 40
16.2ADD /REMOVE STATIC MULTICAST ADDRESS .......................................................................................................... 40
16.3 STATIC MULTICASTADDRESS ALLOCATION............................................................................................................. 40
CHAPTER 17 THE SNMP CONFIGURATION............................................................................................................ 41
17.1 CONFIGURE THE VIEW INTO THE SNMP ................................................................................................................ 41
17.2 ENABLE THE SNMPINFORMATION......................................................................................................................... 41
17.3 THE SNMPCONFIGURATION VIEW......................................................................................................................... 41
CHAPTER 18 PORT STATISTICS ................................................................................................................................. 42
18.1 ENTER THE PORT STATISTICALCONFIGURATION VIEW.......................................................................................... 42
18.2 PORT STATISTICS CONFIGURATION VIEW............................................................................................................... 42
CHAPTER 19 SYSTEM MANAGEMENT..................................................................................................................... 43
19.1 ENTER THE SYSTEM MANAGEMENT CONFIGURATION VIEW.................................................................................. 43
19.2 SYSTEM TIMEOUT..................................................................................................................................................... 43
19.3 IPADDRESS AND DEFAULT GATEWAYSETTING........................................................................................................ 44
19.4 USER NAME,PASSWORD SETTINGS.......................................................................................................................... 44
19.5 DISPLAYDEVICE IP, SUBNET MASK,DEFAULT GATEWAY........................................................................................ 44
19.6 RESTORE FACTORYSETTINGS.................................................................................................................................. 45
19.7 UPLOAD,DOWNLOAD THE CONFIGURATION FILE .................................................................................................. 45
19.8 THE SYSTEM UPGRADE............................................................................................................................................. 46

1
Chapter 1 Login Ethernet Switch
1.1 Configuration through console port
1. Connection switches to configure terminal
As shown in Figure 1.1.1, the establishment of the local configuration environment, only the
computer serial cable and connected to the Console port of the Ethernet switch.
(Figure 1.1.1)
This cable is used for connecting the IT-ES5028-IM-4GS series switch Console port and the external
monitoring terminal equipment. One end is RJ45 eight core plug, the other end is the 9 hole plug
(DB9). Console RJ45 IT-ES5028-IM-4GS series switch socket head, the cable inner connecting line
diagram as shown below.
(Figure 1.1.2)
2. Configure terminal parameters
1) Turn the computer, on the Windows interface, click "Start/All
Programs/Accessories/communication", run a terminal emulation program to create a new
connection. The RS-232 port is connected to the computer. To take Hyper Terminal in Windows XP
for example, as shown in Figure 1.1.3, type in a new name of the connection in a text box named
"name", then click "OK" button.

2
(Figure 1.1.3)
2) Choose connecting serial port. Choose connecting serial port under “Connect using”（pay attention
to the chosen serial port is consistent with the port connected with the configuration cable）， Click
“OK”. As shown in Figure 1.1.4.
(Figure 1.1.4)
3) Set serial port parameters. As shown in Figure 1.1.5, set the“Bits per second”in the “Properties”
of serial port is 115200bit/s，“Data bits”is 8，“parity”is None，“Stop Bits”is 1，“Flow
Control”is None. Click “OK”button to enter to “Hyper Terminal”Window.

3
(Figure 1.1.5)
4) Hyper terminal attribute. In the Hyper Terminal window select [document / property / setting] into
the attributes settings window. Select the terminal simulation of type VT100 or automatic detection,
click < OK > button to return to the hyper terminal window.
5) For IT-ES5028-IM-4GS series switch power, power after the hyper terminal display Ethernet
switch self-test information, after the prompt the user to type the carriage return, until the emergence
of <user name> command prompt, this time to enter the correct username and password, enter the
switch system mode can be configured, the specific configuration commands refer to the later
chapters of the contents of the book in.
As the network pipeline connection than COM1, in step two must choose the corresponding COM port. Step three "bits per
second" must choose 115200, otherwise cannot be displayed.
1.2 Configuration through Telnet
Terminal device use telnet connect to IT-ES5028-IM-4GS series through PC, the requirements are as
follows:

4
1. The IP address of IT-ES5028-IM-4GS series can get it by search or modify (Use IP command
under the system management view);
2. If PC and IT-ES5028-IM-4GS in the same local area network, the IP address must in a same
network segment, otherwise, PC and IT-ES5028-IM-4GS must cross-router.
If satisfied these two requirements, can use telnet access to IT-ES5028-IM-4GS series, and then
configure the IT-ES5028-IM-4GS.
1）Establish configuration environment, just connect PC’s Ethernet port connect to
IT-ES5028-IM-4GS’s Ethernet port through Local area network.
(Figure 1.2.1)
2）Run the Telnet program on the PC, need to input“Telnet+ Space+ IT-ES5028-IM-4GS’s IP
address”for checking, Figure 1.2.2 as follows:
(Figure 1.2.2)
3）Hit “Enter”, checkout successful and till PC show “Please input hostname and password”, ask
user to input user name and password, default is admin, figure 1.2.3 as follows:

5
(Figure 1.2.3)
4）Use command to configure IT-ES5028-IM-4GS series and check the running statues, if need help,
please input “?”at any time. Specific configuration command, please reference
“IT-ES5028-IM-4GS series CLI user manual”.
1.3 Agreement
1. Command line format agreement table 1.3.1 as follow
Table 1.3.1
Format
Description
Bold
Key words of the command show by bold type.
italic
Parameter of the command show italic type.
[ ]
It shows part in “[]”is optical when command configuration is need.
{ x | y | ... }
It shows to pick up one from two or more items.
[ x | y | ... ]
It shows to pick up one or no one from two or more items.
{ x | y | ... }
It shows to pick up one at least, all at most from two or more items.
2. Format agreement of figure interface Table 1.3.2 as follows:
Table 1.3.2
Format
Description
< >
“< >” shows press name, like ”click<OK>”
[ ]
“[ ]” shows windows name, menu name and data list. like “eject [create user]window”
/
Multilevel is separated by “/”. Like [file/create/folder] means[create] a [folder] under the
menu of [file]

6
1.4 Command line port
IT-ES5028-IM-4GS series provide command lines port and its configuration for user’s easy
configuration and management. Command lines port includes the following features:
1. Local configuration through Console port;
2. Supports history command saving which means it can save 10 pieces. History commands can
be selected by up and down key.
3. User can type in “help” or ”?” to get some help;
4. Supports intelligent complement with Tab when commands input;
5. Command interpreter take the method of partial matching. User can type in conflict-free key
words, such as config command, only need to type in conf.
1.4.1 View of Command Lines
IT-ES5028-IM-4GS series’view of command lines aim at configuration of different functions.
First of all, IT-ES5028-IM-4GS series establish connection, then confirmation of user name and
password finished, after enter the correct user name and password, enter “help or ?”in “switch”,
enter into system view, Under the view of system, corresponding view appears after typing
indifferent command, figure 1.4.1 as follows:
(Figure 1.4.1)

7
Table 1.4.1 system view command list
View
Function
DOS Prompt
Enter
Quit
System View
Switch#
Quit and
return to
user login
Information
Show or modify device
information, like software
version, IP address, etc.
Switch
(information)#
Information
Exit and
return to
the view
of system
Port Settings
Show or modify the port
information, such as: duplex
mode, port enable
Switch (Port)#
Port
Bandwidth
Management
Show or modify the
bandwidth information,
such as the inlet and outlet
bandwidth settings etc.
Switch
(Bandwidth)#
Bandwidth
Storm Suppression
The rate and type of
information to view or
modify the broadcast storm
Switch (storm)#
Storm
Dynamic Multicast
View filter information or
modify the GMRP enable
and port information and
IGMP filtering or queries
enable etc.
Switch
(MultiFilter)#
MultiFilter
Static Multicast
View or modify the static
multicast address, such as
adding a static multicast
address
Switch
(Multicast)#
Multicast
VLAN
View or modify the Vlan
information, such as the
addition of Vlan, PVID, port
type etc.
Switch (Vlan)#
Vlan
QoS
View or modify the Qos,
Tos value, such as Qos, Tos
etc.
Switch (QoS)#
QoS
Rapid Ring
View or modify information
such as the net ring, ring ID,
ring port, RSTP information
etc. View or modify the
RSTP information
Switch (Ring)#
Ring

8
Port Trunking
View or modify the port
trunk information, such as
the trunk port
Switch (Trunk)#
Trunk
MAC port lock
View or modify the static
unicast MAC address and
port
Switch (Access)#
Access
SNMP
Configuration
SNMP enable configuration
Switch (Snmp)#
Snmp
Email Warning
View or modify the message
alarm information, such as
mail server address,
password, etc.
Switch (Email)#
Email
Relay Warning
View or modify the alarm
information, such as power
alarm, and port alarm.
Switch (Alarm)#
Alarm
Port Statistics
Port to receive the frame
and the total amount of data
statistics
Switch
(Statistics)#
Statistics
Diagnosis
View or modify the mirror
port information
Switch (mirror)#
Mirror
SNTP
View or modify time
configuration
Switch (Time)#
Time
Basic Settings
View or modify the settings
information, such as the IP
address, subnet mask,
default gateway, the user
password
Switch
(manage)#
Manage
1.4.2 Command lines online help
Command lines port provides the following online help:
Total help;
Partial help;
1. Total help
1）Type in <?> to get all commands and their description.
Example：
Switch#?
List --List commands of current menu

9
Help --Help commands of current menu
Quit --Exit from CLI
Exit --Exit from current menu
Reboot --Reboot switch
Port --Enter port setting menu
Bandwidth --Enter bandwidth management menu
MultiFilter --Enter multicast filtering menu
Multicast --Enter static multicast filters menu
Vlan --Enter vlan menu
QoS --Enter QoS menu
Ring --Enter Ring menu
Trunk --Enter Trunking setting menu
Snmp -- Enter Snmp setting menu
Alarm --Enter alarm setting menu
Statistics --Enter Statistics menu
Mirror --Enter port mirror menu
Time --Ether time menu
Manage --Enter system manage menu
Information --Enter device information menu
2）Type in a command and “?”, between there is a space, if key word is in this location, then type
in all keywords and descriptions.
Example:
Switch (information)# show ?
mac --show device MAC Address
version --show device version
others --show device type、name、etc.
2. Partial help
1）Type in a character string with <?>. It can show all commands beginning with this character string.
Example:
Switch# R?
Reboot --Reboot switch
Ring --Enter Ring menu

10
2）Type in former letters of some key word of the command, press<Tab> key. If the letters are unique,
it can show the completed key word.
Example:
Switch# inf+<Tab>
Switch# information
1.4.3 Frequent Incorrect Information of Command Lines
All commands typed by users, if it is certificated by grammar, it can run correctly, or users will be
sent incorrect information. Frequent incorrect information is in table 1.4.3 as below:
Table 1.4.3 frequent incorrect information
English incorrect information
Reason
Invalid Command
Command cannot be found.
Key word cannot be found.
The type of parameter is wrong.
The parameter is beyond the border.
Incomplete Command
Command is not completed.
Too many parameters
Parameter is too much.
1.4.4 History command
Command lines port can provides the function similar to Dos key. It automatic save command lines that users
types in, and users can use these history commands. Detailed operating please check table 1.4.4 as follows:
Table 1.4.4 access history command
Operating
Key
Result
Visit previous history command
Up <↑>
If it exists earlier command, it is taken out.
Visit next history command
Down <↓>
If it exists later command, it is taken out.

11
CHAPTER 2 Device system based information configuration
Device information includes Device Type, Hardware Version, Device Name, Software Version, Device Description,
Device SN and Contact Way. Among them, HardwareVersion and Software Version can be only read, not modified.
2.1 Enter into the view of device information
Please check the view as figure 2.1.1
Table 2.1.1
Operating
Command
Description
Enter into the view of device information
Information
Run in the view of system
2.2 Display device information
Please check the device information command as table 2.2.1
Table 2.2.1
Operating
Command
Description
Show system version
show
version
Carry our under the view of device information
Show MAC address of device
show mac
Carry our under the view of device information
Show Device Type, Name, etc.
show others
Carry our under the view of device information
Configure device model, name etc
config
Carry our under the view of device information
Delete device model, name etc
clean
Carry our under the view of device information
Example: Enter into device information view, enter the bold type command as follows and enter return key
Switch# information
Switch (information)# ?
List --List commands of current menu
Help --Help commands of current menu
Quit --Quit from CLI
Exit --Exit from current menu
Reboot --Reboot switch
Show mac --Show device MAC Address
Show version --Show device version
Show others --Show device type,name,etc
Config --Config device type,name,etc
Clean --Clean device type,name,etc /

12
Example: Check device name and model number etc
Switch (information)# show others
Device type Managed Switch
Device name Industrial Switch
Description 28PORT
Serial number
Contact way
Example: Check the MAC address
Switch (information)# show mac
Device MAC address: 00.22.6F.02.B0.83
2.3 Configuration information
Please reference user configuration device information as table 2.3.1:
Table 2.3.1
Operating
Command
Description
Configure Device Type
config –ttype
Type: configurable type, the length is between
1～16 characters
Configure Device Name
config -n name
Name: configurable name, the length is
between1～16 characters
Configure Serial Number
config -m number
Number: configurable number, the length is
between 1～16 characters
Configure Device Description
config -p description
Description: configurable description, the length
is between 1～16 characters
Configure Contact information
config -c contact
Contact: Configure Contact way 1-30 bytes
Example: Configure device name as AB123, enter the bold type command as follows and enter return key:
Switch (information)# config -nABC123
[OK]
Example: Configure device serial number as 201304111, enter the bold type command as follows and enter return
key:
Switch (information)# config -m 201304111
[OK]

13
2.4 Delete device information
Please reference table 2.4.1
Table 2.4.1
Operating
Command
Description
Delete Device Type
Clean –t
Carry our under the view of device information
Delete Device Name
Clean -n
Carry our under the view of device information
Delete Serial Number
Clean -m
Carry our under the view of device information
Delete Device Description
Clean -p
Carry our under the view of device information
Delete Contact information
Clean -c
Carry our under the view of device information
Example: Delete device name, enter the bold type command as follows and enter return key:
Switch (information)# clean -n
[OK]
Example: Delete Serial Number, enter the bold type command as follows and enter return key:
Switch (information)# clean -m
[OK]
Example: Delete Contact information, enter the bold type command as follows and enter return key:
Switch (information)# clean -c
[OK]

14
Chapter 3 Port Configuration
Port information including link state (link or LOS), the port state (full or half), rate mode (automatic
negotiation, 10Mbps, 100Mbps), interface type (electric or optical), flow control, port is enabled.
3.1 Port information
The Ethernet port characteristics of IT-ES5028-IM-4GS series switches support:
10/100Base-Tx Ethernet port can operate in half duplex, full duplex, auto negotiation mode. Support
MDI/MDIX adaptive, and able to negotiate with other network devices, automatic selection of the
most appropriate way of working and rate, which greatly simplifies the configuration and
management system; 100Base-FX port, rate of 100Mbps, working in full duplex mode, flow control
can be set.
Enter the port configuration view
Table 3.1.1 to enter the port configuration view:
Table 3.1.1
Operating
Command
Description
Enter the port configuration view
port
In view of the system under the
3.2 Display port configuration information
Table 3.2.1 shows the command port configuration information:
Table 3.2.1
Operating
Command
Description
Display port state information
Show state <portlist>
<portlist>：1,3,5-28 or all
Display port configuration
information
Show config <portlist>
<portlist>：1,3,5-28 or all
Example: display port state information 3, 4
Switch (Port)# show state 3,4
port3 Speed: 10M Port status: HALF Link status: LOS Interface type: TX
port4 Speed: 10M Port status: HALF Link status: LOS Interface type: TX
3.3 Port configuration
Port configuration including:
1 To enable or disable the port;
2 Configure the port speed and duplex mode;
3 The allocation of port flow control;
4 Remove the statistics information of port frame;

15
3.4 To enable or disable the port
The user can use the following command to open or close the port. By default, the port is enabled.
Table 3.3.1 to enable or disable the port: Table 3.3.1
Operating
Command
Description
Enable port
Enable <portlist> {enable|disable}
<portlist>：1, 3, 5-28 or all
Example: 3, 4, 6 closed port
Switch（Port）# Enable 3,4,6 disable
[OK]
3.5 Configure the port speed and duplex mode
Table 3.4.1 configure the port speed and duplex.
Table 3.4.1
Operating
Command
Description
Configure the
port speed and
duplex mode
Mode <portlist> {10h|10f|100h|100f|1000h|auto}
<portlist>：1,3,5-28 or all
mode：
10h, 10Mbps Half duplex
10f, 10Mbps Full duplex
100h, 100Mbps Half duplex
100f, 100Mbps Full duplex
1000h,1000 Mbps Half duplex
Auto: Automated negotiation
Example: Rate of 3, 4, 5 100Mbps full duplex port configuration
Switch（Port）# Mode 3-5 100f
[OK]
3.6 Configure the port flow control
Table 3.5.1 to enable or disable the port flow control:
Table 3.5.1
Operating
Command
Description
Enable port flow control
Flow-con <portlist> enable
<portlist>：1,3,5-28 or all
Disable port flow control
Flow-con <portlist> disable
<portlist>：1,3,5-28 or all
Example: open port 3, 4, 5 flow control
Switch （Port）# flow-con 3,4,5 enable
[OK]