3Com 4200G PWR User manual

Copyright © 2006, 3Com Corporation. All rights reserved.
www.3Com.com
Part Number: 10014917 Rev. AB
Published: December 2006
3COM SWITCH 4200G FAMILY
QUICK REFERENCE GUIDE
Overview
This Command Reference applies to the following Switch 4200G models:
About the Command Line Interface
To use and navigate the command line interface of your unit, please refer to the following points for assistance:
■When initially accessing the command line interface, press Enter when prompted. The User View menu for the unit
displays. This is indicated by the chevron brackets around the name of the unit at the prompt, for example,
<sw4200G>.
■When in the System View menu, square brackets appear around the name of the unit at the prompt, for example,
[sw4200G].
■You must be in the System View menu to access the configurable CLI commands.
■Some commands can be entered directly at any prompt from anywhere in the interface.
■If you enter part of a command followed by a ? (with no space between), the CLI will show you all the commands
that begin in that way.
■The term ‘view’ may be used interchangeably with the term ‘menu’.
■The undo command is placed before the command you wish to undo, for example, undo setauthentication password.
■<CTRL-A> places the cursor back to the start of the command line.
■Enter the first few characters of a command and press TAB to enter the full command without having to input the
entire command (where there is only one command that starts with the entered characters).
■Use the Up Arrow key at the prompt to repeat the previous command string.
■Use the Delete key to delete the character after the cursor; the Backspace key deletes the character before the cursor.
■When entering physical port numbers, Enter the port number as x/0/z, where x is the unit number and z is the
physical port number.
Switch 4200G 12-Port (3CR17660-91)
Switch 4200G 24-Port (3CR17661-91)
Switch 4200G 48-Port FX (3CR17662-91)
Switch 4200G 1-Port 10Gigabit Module (XFP) (3C17666)

23Com Switch 4200G Family
Command Reference
Displaying Command Parameters
At the prompt, enter the name of the command followed by a space and ?. For example:
<sw4200G>boot ?
The following parameters are displayed:
attribute-switch Exchange the file main-attribute and backup-attribute.
boot-loader Select a file to boot at the next time
bootrom Update Bootrom
web-package Set web resource package
To specify boot loader, enter the command as follows:
<sw4200G>boot boot-loader ?
You only need to enter ? if parameters exist for the command.
Displaying Parent Menus
At the prompt, enter quit.
Displaying the User View Menu
Press <CTRL-Z>.
Obtaining Help
At the prompt, enter ?.
Further Information
For further information about how to use the command line interface, refer to the Command Reference Guide and
the Configuration Guide, which are both available as PDF documents on the CD that accompanied the unit.
Commands
access-limit
Use the access-limit command to set the maximum number of access users that can be contained in
current ISP domain.
ISP Domain view
accounting
Use the accounting command to configure an accounting scheme for the current ISP domain.
ISP Domain view
accounting domain
Use the accounting domain command to enable the DHCP accounting function.
DHCP Address Pool view
accounting-on enable
Use the accounting-on enable command to enable user re-authentication upon device restart function.
RADIUS Scheme view
accounting optional
Use the accounting optional command to open the accounting-optional switch.
ISP Domain view
RADIUS Scheme view

3Com Switch 4200G Family 3
Command Reference
acl
Use the acl command to reference ACL and implement the ACL control to the TELNET users.
User Interface view
acl
Use the acl command to define an ACL identified by a number, and enter the corresponding ACL View.
System view
active region-configuration
Use the active region-configuration command to activate the settings of an MST (multiple spanning
tree) region.
MST Region view
add-member
Use the add-member command to add a candidate device to a cluster.
Cluster view
address-check
Use the address-check command to enable or disable DHCP relay security on a VLAN interface, so as to
start or stop the validity check on user addresses under the VLAN interface.
VLAN Interface view
administrator-address
Use the administrator-address command to store the MAC address of the management device on a
member device.
Cluster view
am user-bind
Use the am user-bind command to bind the MAC and IP addresses of a legal user to a specified port.
System view
Ethernet Port view
apply qos-profile
Use the apply qos-profile command to manually apply the QoS profile to the current port.
Ethernet Port view
apply qos-profile interface
Use the apply qos-profile interface command to manually apply a QoS profile to one or more
consecutive ports.
System view
arp check enable
Use the arp check enable command to enable the ARP entry checking function, that is, to disable a switch
from creating multicast MAC address ARP entries for MAC addresses learned.
System view
arp static
Use the arp static command to configure the static ARP mapping entries in the ARP mapping table.
System view
arp timer aging
Use the arp timer aging command to configure the aging time for dynamic ARP mapping entries.
System view
ascii
Use the ascii command to configure data transmission mode as ASCII mode.
FTP Client view
attribute
Use the attribute command to configure attributes of a user whose service type is lan-access.
Local User view
authentication
Use the authentication command to configure an authentication scheme for the current ISP domain.
ISP Domain view
authentication-mode
Use the command authentication-mode to specify the authentication mode.
User Interface view
authorization
Use the authorization none command to allow users in the current ISP domain to use network services
without being authorized.
ISP Domain view

43Com Switch 4200G Family
Command Reference
auto-build
Use the auto-build command to create a cluster automatically.
Cluster view
auto-execute command
Use the auto-execute command command to set the command that is executed automatically after a user
logs in.
User Interface view
binary
Use the binary command to specify that files be transferred in binary mode. That is, data is transferred in
binary streams.
FTP Client view
black-list add-mac
Use the black-list add-mac command to add a device into the blacklist.
Cluster view
black-list delete-mac
Use the black-list delete-mac command to delete a device from the blacklist.
Cluster view
boot attribute-switch
Use the boot attribute-switch command to switch between the main and backup attribute for all the files
or a specified type of files. This changes a file with the main attribute to one with the backup attribute, or
vice versa.
User view
boot boot-loader
Use the boot boot-loader command to configure an app file to be of the main attribute. The app file
specified by this command becomes the main startup file when the device starts the next time.
User view
boot boot-loader
Use the boot boot-loader command to specify the host software that will be adopted when the current
switch or a specified switch in the fabric reboots next time.
User view
boot boot-loader backup-attribute
Use the boot boot-loader backup-attribute command to configure an app file to be of the backup
attribute.
User view
boot bootrom
Use the boot bootrom command to update the BootROM.
User view
boot web-package
Use the boot web-package command to configure a Web file to be of the main or backup attribute.
User view
broadcast-suppression
Use the broadcast-suppression command to define the broadcast traffic ratio allowed on one port or each
of the ports.
System view
build
Use the build command to configure a cluster with the current switch as the management device. Argument
name specifies the name of the cluster.
Cluster view
bye
Use the bye command to terminate the connection to the remote SFTP server and return to system view.
SFTP Client view
bye
Use the bye command to terminate the control connection and data connection with the remote FTP server
and quit to user view.
FTP Client view
cd
Use the cd command to change the current path on the remote SFTP server.
SFTP Client view

3Com Switch 4200G Family 5
Command Reference
cd
Use the cd command to enter a specified directory on the Ethernet switch.
User view
cd
Use the cd command to change the work path on the remote FTP server.
FTP Client view
cdup
Use the cdup command to return to the upper directory.
SFTP Client view
cdup
Use the cdup command to enter the parent directory.
FTP Client view
check region-configuration
Use the check region-configuration command to display the configurations of the MST regions that are
not activated.
MST Region view
clock datetime
Use the clock datetime command to set the current system time and date.
User view
clock summer-time
Use the clock summer-time command to set the name, time range, and offset of the daylight saving time.
User view
clock timezone
Use the clock timezone command to set local time zone information.
User view
close
Use the close command to terminate an FTP connection without quitting FTP client view.
FTP Client view
cluster
Use the cluster command to enter cluster view.
System view
cluster enable
Use the cluster enable command to enable the cluster function on a switch.
System view
cluster-local-user
Use the cluster-local-user command to configure a Web username and password for all cluster
members.
Cluster view
cluster-mac
Use the cluster-mac command to configure a multicast MAC address for cluster management. Run this
command only on the management device only.
Cluster view
cluster-mac syn-interval
Use the cluster-mac syn-interval command to set the interval for the management device to send
multicast packets. This command can be executed on the management device only.
Cluster view
cluster-snmp-agent community
Use the cluster-snmp-agent community command to configure a SNMP community for a cluster to enable
SNMP access.
Cluster view
cluster-snmp-agent group v3
Use the cluster-snmp-agent group command to configure a SNMP group for a cluster to map SNMP
users to the SNMP view.
Cluster view
cluster-snmp-agent mib-view included
Use the cluster-snmp-agent mib-view command to create or update the information about the MIB view
configured for a cluster.
Cluster view

63Com Switch 4200G Family
Command Reference
cluster-snmp-agent usm-user v3
Use the cluster-snmp-agent usm-user v3 command to add an account to the SNMPV3 group configured
for a cluster.
Cluster view
cluster switch-to
Use the cluster switch-to command to switch between the management device and member devices
for configuration and management.
User view
cluster switch-to sysname
Use the cluster switch-to sysname command to switch between the master device and a member
device.
User view
command-privilege level
Use the command-privilege level command to set the level of the specified command in a specified view.
System view
copy
Use the copy command to copy a file.
User view
copy configuration
Use the copy configuration command to copy the configuration of a specific port to other ports, to ensure
consistent configuration.
System view
cut connection
Use the cut connection command to cut the connection a user or a category of users by force.
System view
data-flow-format
Use the data-flow-format command to set the units of measure for the data flow sent to the RADIUS
Server.
RADIUS Scheme view
databits
Use the databits command to set the databits for the user interface.
User Interface view
debugging
Use the debugging command to enable the system debugging.
User view
debugging
Use the debugging command to enable the system debugging.
User view
debugging arp packet
Use the debugging arp packet command to enable ARP debugging.
User view
debugging dhcp client
Use the debugging dhcp client command to enable debugging for the DHCP client/BOOTP client.
User view
debugging dhcp-relay
Use the debugging dhcp-relay command to enable DHCP relay debugging.
User view
debugging DLDP
Use the debugging dldp command to enable specific debugging for DLDP on all ports with DLDP enabled.
User view
debugging ntp-service
Use the debugging ntp-service command to debug different NTP (network time protocol) services.
User view
debugging radius
Use the debugging radius command to enable the debugging for RADIUS protocol.
User view
debugging snmp-agent
Use the debugging snmp-agent command to enable SNMP Agent debugging.
User view

3Com Switch 4200G Family 7
Command Reference
debugging udp-helper
Use the debugging udp-helper command to enable UDP Helper debugging.
User view
delete
Use the delete command to delete a specified file stored on a switch.
User view
delete
Use the delete command to delete the specified file from the server.
SFTP Client view
delete
Use the delete command to delete the specified remote file.
FTP Client view
delete-member
Use the delete-member command to remove a member device from the cluster.
Cluster view
delete static-routes all
Use the delete static-routes all command to delete all the static routes.
System view
description
Use the description command to enter a description of an Ethernet port.
Ethernet Port view
description
Use the description command to assign a description string for the VLAN.
Use the undo description command to restore the default description string.
VLAN view
description
Use the description command to assign a description string to a VLAN or a VLAN interface.
VLAN view
VLAN Interface view
description
Use the description command to define the description information of an ACL to describe the specific
purpose of the ACL.
Basic ACL view
Advanced ACL view
Layer 2 ACL view
dhcp relay information enable
Use the dhcp relay information enable command to enable option 82 supporting on a DHCP relay,
through which you can enable the DHCP relay to insert option 82 into DHCP request packets sent to a
DHCP server.
System view
dhcp relay information strategy
Use the dhcp relay information strategy command to instruct a DHCP relay to perform specified
operations to DHCP request packets that carry option 82.
System view
dhcp-security static
Use the dhcp-security static command to configure a static user address entry.
System view
dhcp-server
Use the dhcp-server command to map the current VLAN interface to a DHCP server group.
VLAN Interface view
dhcp-server ip
Use the dhcp-server ip command to configure the DHCP server IP address(es) in a specified DHCP
server group.
System view
dir
Use the dir command to display the information about the specified files or directories on a switch.
User view

83Com Switch 4200G Family
Command Reference
dir
Use the dir command to query specified files.
FTP Client view
dir
Use the dir command to display the files in the specified directory.
SFTP Client view
disconnect
Use the disconnect command to terminate a FTP connection without quitting FTP client view.
FTP Client view
display acl
Use the display acl command to view the detailed configuration information of an ACL, including each
rule and its number as well as the number and size in bytes of the data packets that match the statement.
Any view
display am user-bind
Use the display am command to view whether address management is enabled and to display IP address
pool configuration.
Any view
display arp
Use the display arp command to display the ARP mapping table entries by entry type, or by a specified
IP address.
Any view
display arp count
Use the display arp count command to display the number of the specified type of ARP mapping entries.
Any view
display arp timer aging
Use the display arp timer aging command to view the current setting of the dynamic ARP aging timer.
Any view
display boot-loader
Use the display boot-loader command to display the information about the app startup files of a switch,
including the current app startup file name, the main and backup app startup files to be used when the switch
starts the next time.
Any view
display boot-loader
Use the display boot-loader command to display the host software (.bin file) that will be adopted when
the switch reboots.
Any view
display bootp client
Use the display bootp client command to display BOOTP client-related information, including the MAC
address of the BOOTP client and the IP address obtained.
Any view
display brief interface
Use the display brief interface command to display the configuration information about one specific
or all ports in brief, including the port type, connection state, connection rate, duplex attribute, link type and
default VLAN ID.
Any view
display channel
Use the display channel command to display the details about the information channel.
Any view
display clock
Use the display clock command to display the current date and time of the system, so that you can adjust
them if they are wrong.
Any view
display cluster
Use the display cluster command to display the state and basic configuration information of the cluster
that contains the current switch.
Any view
display cluster base-topology
Use the display cluster topology command to display the standard topology view of the cluster.
Any view

3Com Switch 4200G Family 9
Command Reference
display cluster black-list
Use the display cluster black-list command to display the current blacklist of the cluster.
Any view
display cluster candidates
Use the display cluster candidates command to display candidate devices of a cluster.
Any view
display cluster current-topology
Use the display cluster current topology command to display the current topology view or the topology
path between two points.
Any view
display cluster members
Use the display cluster members command to display the information about cluster members.
Any view
display connection
Use the display connection command to view the information for a specified connection type.
Any view
display cpu
Use the display cpu command to display CPU usage of a specified switch.
Any view
display current-configuration
Use the display current-configuration command to display the current configuration of a switch.
Any view
display debugging
Use the display debugging command to display the enabled debugging on a specified device.
Any view
display debugging habp
Use the display debugging habp command to display the state of HABP debugging.
Any view
display device
Use the display device command to display the information, such as the module type and operating
status, about each board (main board and sub-board) of a specified switch.
Any view
display dhcp client
Use the display dhcp client command to display the DHCP client-related information.
Any view
display dhcp-security
Use the display dhcp-security command to display one or all user address entries, or a specified type
of user address entries in the valid user address table of a DHCP server group.
Any view
display dhcp-server
Use the display dhcp-server command to display information about a specified DHCP server group.
Any view
display dhcp-server interface vlan-interface
Use the display dhcp-server interface vlan-interface command to display information about the
DHCP server group to which a VLAN interface is mapped.
Any view
display dhcp-snooping
Use the display dhcp-snooping command to display the user IP-MAC address mapping entries recorded
by the DHCP snooping function.
Any view
display dhcp-snooping
Use the display dhcp-snooping command to display the correspondence between user IP addresses and
MAC addresses recorded by the DHCP snooping function.
Any view
display dhcp-snooping trust
Use the display dhcp-snooping trust command to display the (enabled/disabled) state of the DHCP
snooping function and the trusted ports.
Any view

10 3Com Switch 4200G Family
Command Reference
display dhcp-snooping trust
Use the display dhcp-snooping trust command to display the DHCP-Snooping state and information
on trusted ports.
Any view
display diagnostic-information
Use the display diagnostic-information command to display the system diagnostic information, or save
the system diagnostic information to a file (with a suffix of "diag") in the flash memory.
Any view
display domain
Use the display domain command to view the configuration information of a specified ISP domain or
display the summary information of all ISP domains.
Any view
display dot1x
Use the display dot1x command to view the relevant information of 802.1x.
Any view
display fib
Use the display fib command to view the summary of the forwarding information base.
Any view
display ftp-server
Use the display ftp-server command to display the FTP server-related settings of a switch when it
operates as an FTP server.
You can use this command to verify FTP server-related configurations.
Any view
display ftp-user
Use the display ftp-user command to display the settings of the current FTP user, including the user
name, host IP address, port number, connection idle time, and authorized directory.
Any view
display garp statistics
Use the display garp statistics command to display the GARP statistics on specified (or all) ports.
Any view
display garp timer
Use the display garp timer command to display the values of the GARP timers on specified or all ports.
Any view
display gvrp statistics
Use the display gvrp statistics command to display the GVRP statistics about specified (or all) Trunk
ports.
Any view
display gvrp status
Use the display gvrp status command to display the enable/disable status of global GVRP.
Any view
display habp
Use the display habp command to display HABP configuration and status information.
Any view
display habp table
Use the display habp table command to display the MAC address table maintained by HABP.
Any view
display habp traffic
Use the display habp traffic command to display statistics on HABP packets.
Any view
display history-command
Use the display history-command command to display history commands.
Any view
display icmp statistics
Use the display icmp statistics command to view the statistics information about ICMP packets.
Any view
display igmp-snooping configuration
Use the display igmp-snooping configuration command to display the configuration information about
IGMP Snooping.
Any view

3Com Switch 4200G Family 11
Command Reference
display igmp-snooping group
Use the display igmp-snooping group command to display information about the IP and MAC multicast
groups under one VLAN (with vlan vlan-id) or all VLANs (without vlan vlan-id).
Any view
display igmp-snooping statistics
Use the display igmp-snooping statistics command to display the message statistics about IGMP
Snooping.
Any view
display info-center
Use the display info-center command to display system log settings and memory buffer record statistics.
Any view
display interface
Use the display interface command to view the configuration information on the selected interface.
Any view
display interface VLAN-interface
Use the display interface vlan-interface command to display the information about the management
VLAN interface, including the physical and link status, the format of the sent frames, the MAC address, IP
address (and subnet mask), description string and MTU (maximum transmit unit) of the management VLAN.
Any view
display ip host
Use the display ip host command to display all host names and their corresponding IP addresses.
Any view
display ip interface vlan-interface
Use the display ip interface vlan-interface command to view information on the specified interface.
Any view
display ip routing-table
Use the display ip routing-table command to display the summary information about the routing table.
Any view
display ip routing-table acl
Use the display ip routing-table acl command to display the routes permitted by the specified basic
ACL.
Any view.
display ip routing-table ip-address
Use the display ip routing-table ip-address command to display the information about the routes
leading to the destination.
Any view
display ip routing-table ip-address1 ip-address2
Use the display ip routing-table ip-address1 ip-address2 command to display the information
about the routes with their destinations within the specified destination IP address range.
Any view
display ip routing-table ip-prefix
Use the display ip routing-table ip-prefix command to display the information about the routes
matching a specified IP prefix list.
Any view
display ip routing-table protocol
Use the display ip routing-table protocol command to display the information about specific routes.
Any view
display ip routing-table radix
Use the display ip routing-table radix command to view the route information in a hierarchical (tree)
structure.
Any view
display ip routing-table statistics
Use the display ip routing-table statistics command to display the statistics of a routing table.
Any view
display ip routing-table verbose
Use the display ip routing-table verbose command to display the detailed information about a routing
table.
Any view

12 3Com Switch 4200G Family
Command Reference
display ip socket
Use the display ip socket command to display the information about the sockets in the current system.
Any view
display ip statistics
Use the display ip statistics command to view the statistics information about IP packets.
Any view
display isolate port
Use the display isolate port command to display the information about the Ethernet ports added to an
isolation group.
Any view
display lacp system-id
Use the display lacp system-id command to view actor system ID, including system priority and system
MAC address.
Any view
display link-aggregation interface
Use the display link-aggregation interface command to display the link aggregation details about a
specified port or port range.
Any view
Use the display link-aggregation interface command to display the link aggregation details about a
specified port or port range, including:
display link-aggregation summary
Use the display link-aggregation summary command to display summary information of all aggregation
groups, including device ID of the local end, aggregation group ID, aggregation group type, device ID of the
remote end, number of the selected ports, number of the unselected ports, load sharing type and master
port number.
Any view
display link-aggregation verbose
Use the display link-aggregation verbose command to display the details about a specified
aggregation group.
Any view
display local-server statistics
Use the display local-server statistics command to view the statistics of all local RADIUS
authentication server.
Any view
display local-user
Use the display local-user command to view information about all the local users or the specified
one(s).
Any view
display logbuffer
Use the display logbuffer command to display the status of the log buffer and the records in the log
buffer.
Any view
display logbuffer summary
Use the display logbuffer summary command to display the summary of the log buffer.
Any view
display-loopback-detection
Use the display loopback-detection command to display the loopback detection status on the port.
Any view
display mac-address
Use the display mac-address command to display MAC address table information.
Any view
display mac-address aging-time
Use the display mac-address aging-time command to display the aging time of the dynamic entry in the
MAC address table.
Any view
display mac-address multicast static
Use the display mac-address multicast static command to display the multicast MAC address entries
manually configured on the switch, with each entry containing the following information: multicast MAC
address, VLAN ID, MAC address state, port number(s), and aging time of each port.
Any view

3Com Switch 4200G Family 13
Command Reference
display mac-address security
Use the display mac-address security command to display the information about Security MAC address.
Any view
display mac-authentication
Use the display mac-authentication command to display global information about centralized MAC
address authentication
Any view
display memory
Use the display memory command to display the memory usage of a specified switch.
Any view
display mirroring-group
Use the display mirroring-group command to display the parameter settings of a port mirroring group.
Any view
display ndp
Use the display ndp command to display global NDP configuration information, including the interval to
send NDP packets, the holdtime of NDP information, and the information about the neighbors of all the
ports.
Any view
display ntdp
Use the display ntdp command to display the global NTDP information. The information includes the
range (in hop count) within which topology information is collected, the interval to collect topology
information (the NTDP timer), the delay time for a device to forward topology-collection requests, the delay
time for a topology-collection request to be forwarded through a port, and the time cost during the last
topology collection.
Any view
display ntdp device-list
Use the display ntdp device-list command to display the device information collected through NTDP.
Any view
display ntdp single-device mac-address
Use the display ntdp single-device mac-address h-h-h command to display the information about a
specific device in detail.
Cluster view
display ntp-service sessions
Use the display ntp-service sessions command to display the status of all the sessions maintained by
NTP (Network Time Protocol) service provided by the local equipment.
Any view
display ntp-service status
Use the command display ntp-service status to display the NTP service status.
Any view.
display ntp-service trace
Use the display ntp-service trace command to display the brief information of each NTP time server
along the time synchronization chain from the local device to the reference clock source.
Any view
display packet-filter
Use the display packet-filter command to view the application information of packet filtering, including
the ACL name, rule names, and application status.
Any view
display port
Use the display port command to display all current ports with their type indicated.
Any view
display port-security
Use the display port-security command to display the information about port security configuration
(including global configuration and all or specific port configuration).
Any view
display port vlan-vpn
Use the display port vlan-vpn command to display the information about the VLAN VPN configuration
of the current system, including current TPID value, VLAN-VPN ports, and VLAN-VPN uplink ports.
Any view

14 3Com Switch 4200G Family
Command Reference
display protocol-priority
Use the display protocol-priority command to display the priority of protocol packets.
Any view
display protocol-vlan interface
Use the display protocol-vlan interface command to display the protocol information and protocol
indexes configured for specified ports.
Any view‘
display protocol-vlan vlan
Use the display protocol-vlan vlan command to display the protocol information and protocol indexes
configured for specified VLANs.
Any view
display qos cos-drop-precedence-map
Use the display qos cos-drop-precedence-map command to display the "COS->Drop-precedence"
mapping relationship.
Any view
display qos cos-dscp-map
Use the display qos cos-dscp-map command to display the "COS->DSCP" mapping relationship.
Any view
display qos cos-local-precedence-map
Use the display qos cos-local-precedence-map command to view the COS–>Local-precedence map.
Any view
display qos dscp-cos-map
Use the display qos dscp-cos-map command to display the "DSCP->802.1 priority" mapping relationship.
Any view
display qos dscp-drop-precedence-map
Use the display qos dscp-drop-precedence-map command to display the "DSCP->Drop-precedence"
mapping relationship.
Any view
display qos dscp-dscp-map
Use the display qos dscp-cos-map command to display the "DSCP->DSCP" mapping relationship.
Any view
display qos dscp-local-precedence-map
Use the display qos dscp-local-precedence-map command to display the "DSCP->Local-precedence"
mapping relationship.
Any view
display qos-interface all
Use the display qos-interface all command to display all the QoS settings of the port.
Any view
display qos-interface priority-trust
Use the display qos-interface priority-trust command to display the precedence mapping mode of
the switch.
Any view
display qos-interface traffic-limit
Use the display qos-interface traffic-limit command to view the traffic limit settings.
Any view
display qos-interface traffic-shape
Use the display qos-interface traffic-shape command to view the parameter configurations of traffic
shaping on the port.
Any view
display qos-interface traffic-statistic
Use the display qos-interface traffic-statistic command to view the traffic statistics.
Any view
display qos-profile
Use the display qos-profile command to view the configurations of the QoS profile.
Any view
display queue-scheduler
Use the display queue-scheduler command to view queue scheduling mode and corresponding
parameters.
Any view

3Com Switch 4200G Family 15
Command Reference
display radius
Use the display radius command to view the configuration information about all RADIUS schemes or a
specified scheme.
Any view
display radius statistics
Use the display radius statistics command to view the statistics information about RADIUS packet.
Any view
display rmon alarm
Use the display rmon alarm command to display the configuration of a specified alarm entry or all the
alarm entries.
Any view
display rmon event
Use the display rmon event command to display the configuration of a specified event entry or all the
event entries.
Any view
display rmon eventlog
Use the display rmon eventlog command to display the log of a specified event entry or all the event
entries.
Any view
display rmon history
Use the display rmon history command to display the RMON history information about a specified port.
The information about the latest sample, including utilization, the number of errors, the total number of
packets and so on, is also displayed.
Any view
display rmon prialarm
Use the display rmon prialarm command to display the configuration of a specified extended alarm entry
or all the extended alarm entries.
Any view
display rmon statistics
Use the display rmon statistics command to display the RMON statistics of a specified port.
Any view
display rsa local-key-pair public
Use the display rsa local-key-pair public command to display the public key of the server host key
pair. If no key pair is generated, the system prompts “%RSA keys not found”.
Any view
display rsa peer-public-key
Use the display rsa peer-public-key command to display the client public key of the specified RSA key
pair. If no key name is specified, the command displays all public keys of the client
Any view
display saved-configuration
Use the display saved-configuration command to display the content of the main configuration file in
the flash memory of a switch.
Any view
display schedule reboot
Use the display schedule reboot command to display information about scheduled reboot.
Any view
display snmp-agent
Use the display snmp-agent command to view engine ID of the local or remote SNMP entity.
Any view
display snmp-agent community
Use the display snmp-agent community command to view the information about the currently configured
community names for SNMPv1 or SNMPv2c.
Any view
display snmp-agent group
Use the display snmp-agent group command to view group name, security model, state of various views
and storage models.
Any view

16 3Com Switch 4200G Family
Command Reference
display snmp-agent mib-view
The display snmp-agent mib-view command is used to view the MIB view configuration information of
the current Ethernet switch.
Any view
display snmp-agent statistics
Use the display snmp-agent statistics command to view the statistics information about SNMP
packets.
Any view
display snmp-agent sys-info
Use the display snmp-agent sys-info command to view the system information of SNMP configuration.
Any view
display snmp-agent trap-list
Use the display snmp-agent trap-list command to display trap list information.
Any view
display snmp-agent usm-user
Use the display snmp-agent usm-user command to view SNMP user information.
Any view
display ssh server
Use the display ssh server command to display the status or session information about the SSH server
Any view
display ssh server-info
Use the display ssh server-info command to display the association between the server public keys
configured on the client and the servers.
Any view
display ssh user-information
Use the display ssh user-information command to display information about the current SSH users,
including user name, authentication mode, key name and authorized service types. If the username is
specified, the command displays information about the specified user.
Any view
display startup
Use the display startup command to display the startup configuration of a switch, including the name of
the current startup configuration file, the names of the main startup configuration file, and backup startup
configuration file to be used when the switch starts the next time, and so on.
Any view
display stop-accounting-buffer
Use the display stop-accounting-buffer command to view the no-response stop-accounting request
packets buffered in the device.
Any views
display stp
Use the display stp command to display the state and statistical information about one or all spanning
trees.
Any view
display stp region-configuration
Use the display stp region-configuration command to display the MST region configuration.
Any view
display tcp statistics
Use the display tcp statistics command to view the statistics information about TCP packets.
Any view
display tcp status
Use the display tcp status command to view the TCP connection state.
Any view
display this
Use the display this command to display the current configuration performed in the current view of the
system.
Any view
display time-range
Use the display time-range command to view the configuration and status of the current time range. You
will see the active or inactive state outputs respectively.
Any view

3Com Switch 4200G Family 17
Command Reference
display trapbuffer
Use the display trapbuffer command to display the status of the trap buffer and the records in the trap
buffer.
Any view
display udp-helper server
Use the display udp-helper server command to view the information of destination Helper server
corresponding to the VLAN interface.
Any view
display user-interface
Use the display user-interface command to view information on a user interface.
Any view
display users
Use the display users command to display the information about user interfaces. If you do not specify the
all keyword, only the information about the current user interface is displayed.
Any view
display users
Use the display users command to display the status and configuration information about user terminal
interfaces. Use the display users all command to view the information on all user terminal interfaces.
Any view
display version
Use the display version command to view the software version, issue date and the basic hardware
configuration information.
Any view
display vlan
Use the display vlan command to display the ports operating in the manual/automatic mode in the current
voice VLAN.
Any view
display vlan
Use the display vlan command to view related information about specified VLANs or all VLANs.
Any view
display voice vlan oui
Use the display voice vlan oui command to display the currently supported OUI addresses and the
related information.
Any view
display voice vlan status
Use the display voice vlan status command to display voice VLAN-related information, including voice
VLAN operation mode, port mode (manual mode or automatic mode), and so on.
Any view
domain
Use the domain command to create an ISP domain and enter its view, or enter the view of an existing ISP
domain, or configure the default ISP domain.
System view
dot1x
Use the dot1x command to enable 802.1x on the specified port or globally, (that is on the current device).
System view
Ethernet Port view
dot1x authentication-method
Use the dot1x authentication-method command to set 802.1x authentication mode.
System view
dot1x dhcp-launch
Use the dot1x dhcp-launch command to specify an 802.1x-enabled switch to launch the process to
authenticate a supplicant system when the supplicant system applies for a dynamic IP address through
DHCP.
System view
dot1x guest-vlan
Use the dot1x guest-vlan command to enable the Guest VLAN function for specified ports.
System view
Ethernet Port view

18 3Com Switch 4200G Family
Command Reference
dot1x max-user
Use the dot1x max-user command to set the maximum number of systems an Ethernet port can
accommodate.
System view
Ethernet Port view
dot1x port-control
Use the dot1x port-control command to specify the access control method for specified Ethernet ports.
System view
Ethernet Port view
dot1x port-method
Use the dot1x port-method command to specify the access control method for specified Ethernet ports.
Ethernet Port view
dot1x quiet-period
Use the dot1x quiet-period command to enable the quiet-period timer.
System view
dot1x retry
Use the dot1x retry command to specify the maximum number of times a switch can transmit the
authentication request frame to supplicant systems.
System view
dot1x retry-version-max
Use the dot1x retry-version-max command to set the maximum number of retries for a switch to send
version request packets to an online supplicant system.
System view
dot1x timer
Use the dot1x timer command to set the 802.1x timers.
System view
dot1x version-check
Use the dot1x version-check command to enable 802.1x client version checking for specified Ethernet
ports.
System view
Ethernet Port view
duplex
Use the duplex command to set the port duplex attribute.
Ethernet Port view
enable snmp trap updown
Use the enable snmp trap updown command to enable the port to send LINK UP and LINK DOWN Trap
information.
System view
end-station polling ip-address
Use the end-station polling ip-address command to configure the IP address requiring periodic testing.
System view
execute
Use the execute command to execute the specified batch file.
System view
exit
Use the exit command to terminate the connection to the remote SFTP server and return to system view.
This command has the same function as the bye and quit commands.
SFTP Client view
file prompt
Use the file prompt command to modify the prompt mode of file operations on the Switch.
System view
flow-control
Use the flow-control command to enable port flow control, to avoid packet loss in the event of network
congestion.
Ethernet Port view
format
Use the format command to format a storage device.
User view

3Com Switch 4200G Family 19
Command Reference
free user-interface
Use the free user-interface command to reset a specified user interface to its default settings. The user
interface will be disconnected after the reset.
User view
free web-users
Use the free web-users command to disconnect a specified Web user or all Web users by force.
User view
ftp
Use the ftp command to establish a control connection with an FTP server and enter FTP client view.
User view
ftp cluster
Use the ftp cluster command to establish a control connection with a cluster FTP server. This command
also leads you to FTP client view.
User view
ftp server
Use the ftp server command to configure an FTP server on the management device for the member
devices in the cluster.
Use the undo ftp server command to remove the FTP server configured for the member devices in the
cluster.
System view
ftp server enable
Use the ftp server enable command to enable FTP server and allow FTP users to log in.
System view
ftp timeout
Use the ftp timeout command to configure connection timeout interval.
System view
garp timer
Use the garp timer command to set the GARP Hold, Join or Leaver timer value on the current port.
Ethernet Port view
garp timer leaveall
Use the garp timer leaveall command to set the GARP LeaveAll timer to a specified value.
System view
get
Use the get command to download a remote file and save the file to the local device.
SFTP Client view
get
Use the get command to download a remote file and save it as a local file.
FTP Client view
gratuitous-arp learning enable
Use the gratuitous-arp-learning enable command to enable the gratuitous ARP packet learning
function.
System view
gvrp
Use the gvrp command to enable GVRP globally (in system view) or on a port (in Ethernet port view).
System view
Ethernet Port view
gvrp registration
Use the gvrp registration command to configure the GVRP registration type on a port.
Ethernet Port view
habp enable
Use the habp enable command to enable HABP for a switch.
System view
habp server vlan
Use the habp server vlan command to configure a switch to operate as an HABP server and HABP
packets to be broadcast in specified VLAN.
System view
habp timer
Use the habp timer command to set the interval for a switch to send HABP request packets.
System view

20 3Com Switch 4200G Family
Command Reference
header
Use the header command to set the banners that are displayed when a user logs into a switch. The login
banner is displayed on the terminal when the connection is established. And the session banner is displayed
on the terminal if a user successfully logs in.
System view
help
Use the help command to get the help information about the specified or all SFTP client commands.
SFTP Client view
history-command max-size
Use the history-command max-size command to set the size of the history command buffer.
User Interface view
holdtime
Use the holdtime command to configure the holdtime of a switch.
Cluster view
idle-cut
Use the idle-cut command to set the user idle-cut function in current ISP domain.
ISP Domain view
idle-timeout
Use the idle-timeout command to configure the amount of time you want to allow a user interface to
remain idle before it is disconnected.
User Interface view
igmp host-join vlan
Use the igmp host-join vlan command to configure a routing port to join to a multicast group.
Ethernet Port view
igmp-snooping
Use the igmp-snooping command to enable or disable the IGMP Snooping.
System view
VLAN view
igmp-snooping fast-leave
Use the igmp-snooping fast-leave command to enable IGMP fast leave processing.
Ethernet Port view
igmp-snooping group-limit
Use the igmp-snooping group-limit command to set the maximum number of multicast groups the port
can join.
Ethernet Port view
igmp-snooping group-policy
Use the igmp-snooping group-policy command to configure an IGMP Snooping filter ACL.
System view
Ethernet Port view
igmp-snooping host-aging-time
Use the igmp-snooping host-aging-time command to set the aging time of multicast member ports.
System view
igmp-snooping max-response-time
Use the igmp-snooping max-response-time command to configure the maximum query response time.
System view
igmp-snooping router-aging-time
Use the igmp-snooping router-aging-time command to configure the aging time of the router port.
System view
info-center channel name
Use the info-center channel name command to name the channel of the specified number.
System view
info-center console channel
Use the info-center console channel command to enable information output to the console through a
specified channel.
System view
info-center enable
Use the info-center enable command to enable the information center.
System view