TRENDnet TI-PG541i User manual

TRENDnet User’s Guide
Cover Page

© Copyright 2016 TRENDnet. All Rights Reserved.
TRENDnet User’s Guide
Table of Contents
i
Contents
Product Overview ...........................................................................1
Package Contents .......................................................................................................... 1
Features......................................................................................................................... 1
Product Hardware Features........................................................................................... 3
SFP Transceiver/Optical Cable Installation .................................................................... 5
Switch Installation ..........................................................................6
DIN-Rail Installation ....................................................................................................... 6
Install power supply connections .................................................................................. 7
Basic IP Configuration.................................................................................................... 7
Connect additional devices to your switch.................................................................... 2
Accessing switch management interfaces ........................................3
Access your switch command line interface.................................................................. 3
CLI Command Modes........................................................................................... 4
Access your switch web management page.................................................................. 5
System Information.........................................................................6
Basic Settings ..................................................................................7
General Settings ............................................................................................................ 7
System ................................................................................................................. 7
Jumbo Frame ....................................................................................................... 9
SNTP..................................................................................................................... 9
Management Host ............................................................................................. 12
MAC Management....................................................................................................... 14
Static MAC Settings............................................................................................ 14
MAC Table.......................................................................................................... 16
Age Time Settings .............................................................................................. 16
Port Mirror................................................................................................................... 17
Port Settings ................................................................................................................ 18
General Settings ................................................................................................ 20
Information........................................................................................................ 21
Advanced Settings ........................................................................ 22
Bandwidth Control ...................................................................................................... 22
QoS .................................................................................................................... 22
Rate Limitation .................................................................................................. 28
IGMP Snooping ............................................................................................................ 31
IGMP Snooping .................................................................................................. 31
Multicast Address .............................................................................................. 34
VLAN ............................................................................................................................ 37
Port Isolation ..................................................................................................... 37
802.1Q VLAN...................................................................................................... 38
MAC-based VLAN............................................................................................... 42
EEE (Energy Efficient Ethernet).................................................................................... 43
Link Layer Discovery Protocol (LLDP)........................................................................... 44
PoE (Power over Ethernet) .......................................................................................... 47
Monitor ........................................................................................ 54
Alarm ........................................................................................................................... 54
Port Statistics............................................................................................................... 54
Port Utilization............................................................................................................. 55
RMON Statistics........................................................................................................... 56
Traffic Monitor ............................................................................................................ 56
Management ................................................................................ 58
SNMP ........................................................................................................................... 58
SNMP Trap......................................................................................................... 60
Mail Alarm ................................................................................................................... 61
Maintenance................................................................................................................ 63
System Log................................................................................................................... 65

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Table of Contents
ii
User Account ............................................................................................................... 66
Technical Specifications.................................................................68
Troubleshooting............................................................................70
Appendix ......................................................................................71

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TRENDnet User’s Guide
TI-PG541i
1
Product Overview
TI-PG541i
Package Contents
In addition to your switch, the package includes:
Quick Installation Guide
CD-ROM (User’s Guide)
If any package contents are missing or damaged, please contact the retail store, online
retailer, or reseller/distributor from which the product was purchased.
Please note power adapter is sold separately (model: 48VDC3000)
Please note power supply is sold separately (model: TI-24048).
Features
TRENDnet’s 6-Port Hardened Industrial Gigabit PoE+ Layer 2 Managed DIN-Rail Switch,
model TI-PG541i, has four Gigabit PoE+ ports, one Gigabit port, one Gigabit SFP slot and
a 120W PoE budget. The switch is equipped with an IP30 rated metal enclosure and
designed to withstand a high degree of vibration, shock, protection against
ESD/EMI/surge, and operate within a wide temperature range (- 40 –70 °C (- 40 - 158
°F)) for harsh environments. L2 management include features such as PoE port control,
VLAN, multicast, and QoS which allow for network integration flexibility.
Industrial Hardened Design
Equipped with a rugged IP30 rated enclosure and designed to withstand a high degree
of vibration, shock, protection against ESD/EMI/surge, and operate with a wide
temperature range (- 40 –70 °C (- 40 - 158 °F)) for harsh environments.
Integration Flexibility
Managed features include PoE control, VLAN, IGMP snooping, QoS, RMON, SNMP trap,
and syslog for monitoring and flexible network integration.
Fault Tolerance
Features dual redundant power inputs (Primary and RPS) from external power sources
and an output alarm relay to indicate the event of input power failure

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Full PoE+ Power Budget
Supplies up to 30 Watts of PoE/PoE+ power per port (ports 1-4 802.3at/802.3af) with a
120 Watt PoE power budget
Network Ports and Capacity
4 x Gigabit PoE+ ports, 1 x Gigabit Port, and 1 x Gigabit SFP slot allow for a 12Gbps
switching capacity
Integrated DIN-Rail Mount
IP30 rated metal enclosure with integrated DIN-rail mounting hardware
Full PoE Control Per Port
PoE control features include enabling/disabling PoE and class, power priority, PD alive
check, scheduling, and power delay per port using CLI or web management.
L2 Management
Managed features include 802.1Q, MAC-Based VLAN, IGMP v1/2/3 Snooping, per port
bandwidth control/802.1p/DSCP/Queue Scheduling (SP/WFQ/WRR), and Storm Control
for flexible network integration.
System Monitoring
Monitoring features include SNMPv1/v2c, MIB support, SNMP trap, RMON Groups (1, 2,
3, 9), SMTP alert, syslog, and port mirroring.
Redundant Power
Dual redundant power inputs (primary and RPS) with overload current protection
Alarm Output
Alarm relay output triggered by power failure of primary and/or redundant power (DIP
switch)
Jumbo Frame
Sends larger packets, or Jumbo Frames (up to 10K)
Wide Temperature
Hardened switch is rated for an operating temperature range of - 40 to 70 °C (-40 to 158
°F)
Electro Magnetic Compliance
Complies with IEC61000-6-2 EMC generic standard immunity for industrial
environments
Shock and Vibration Resistant
Rated for shock (IEC 60068-2-27), freefall (IEC 60068-2-32), and vibration (IEC 60068-2-
6)
LED Indicators
LED indicators convey power, redundant power, alarm, SFP, PoE, and network port
status
Grounding Point
Grounding point protects equipment from external electrical surges

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Product Hardware Features
LED Indicators
Ports 1-4 –Designed to operate at 10Mbps, 100Mbps, or Gigabit speed in both
half-duplex and full-duplex transfer modes. Supports Auto MDI-X and capable
of delivering up to 30W (802.3at PoE+) per port.
Port 5 - Designed to operate at 10Mbps, 100Mbps, or Gigabit speed in both
half-duplex and full-duplex transfer modes. Supports Auto MDI-X
SFP Slot 6 –Designed to operate at Gigabit speeds.
Reset/Reboot Button –Push the button for 10 seconds and release to reset the
switch to factory defaults. Push the button for 3 seconds and release to reboot.
Grounding point/screw –The switch chassis can also be connected to a known
ground point for additional safety and protection. (grounding wire not
included)
Note: For any unused ports or SFP slots, it is recommended to leave the rubber plugs
installed during operation.
LED
State
Status
PWR
(Green)
ON
When the PWR LED is on, the device is using the primary
power input source.
OFF
Primary power input source is off, disconnected, or has
failed.
RPS
(Green)
ON
When the RPS LED lights on, the device is using the
redundant power input source.
OFF
Redundant power input source is off, disconnected or has
failed.
ALM
(Red)
ON
Indicates alarm has been triggered on DIP switch settings and
signal sent out through ALM terminals on terminal block to
third party alarm device.
OFF
No alarm triggered.
POST
(Green)
ON
Device is ready and completed boot process.
OFF
Device is not ready.
SFP Slot 6
(Green)
ON
SFP link is connected.
BLINKING
Data is transmitting/receiving.
OFF
SFP link is disconnected.
PoE Ports 1-4
(Green)
ON
PoE supplied to Ethernet port.
OFF
No PoE supplied to Ethernet port.
Ports 1-5
1000M
(Green)
10/100M
(Off)
ON
Ethernet port is connected.
BLINKING
Data is transmitting/receiving.
OFF
Ethernet port is not connected.

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4
6-pin Removable Terminal Block Note: Turn off the power before connecting modules or wires.
Calculate the maximum possible current in each power wire and common wire. Observe
all electrical codes dictating the maximum current allowable for each wire size. If current
go above the maximum ratings, the wiring could overheat, causing serious damage to
your equipment.
DC Jack Input for External Power Adapter
The device includes a DC Jack for an external power adapter and can also be used as an
additional redundant power supply (RPS) input.
Please ensure that the external power adapter is supplying 48VDC @ 120W or above.
130W for max. PoE+ power.
Please note power adapter is sold separately (model: 48VDC3000)
ALM DIP Switches
Input/Ouput
Function
PWR Input
(+) & (-)
Connects primary power source (ex. external power supply) to power the
device. Device will obtain power from this input first priority if available.
Please make sure to power supplies are turned off before wiring in.
Use a flat-head screw driver to push the orange notches in order release
the wiring connections. While holding in released position, insert the
wiring into the connection inputs from the external power supply and
release the orange notch to lock in the wire connections.
Please ensure that the external power supply is supplying within the
range of 48VDC ~ 57VDC @ 120W or above. 130W for max. PoE+ power.
Please note power supply is sold separately (model: TI-24048)
Device supports overload current protection and reverse polarity
protection.
RPS Input
(+) & (-)
Connects redundant power source (ex. external power supply) to power
the device. Device will obtain power from this input secondary priority if
primary power input is not available or has failed.
Please make sure to power supplies are turned off before wiring in.
Use a flat-head screw driver to push the orange notches in order release
the wiring connections. While holding in released position, insert the
wiring into the connection inputs from the external power supply and
release the orange notch to lock in the wire connections.
Please ensure that the external power supply is supplying within the
range of 48VDC ~ 57VDC @ 120W or above. 130W for max. PoE+ power.
Please note power supply is sold separately (model: TI-24048)
Device supports overload current protection and reverse polarity
protection.
ALM Output
Connects external alarm and sends output signal if fault is detected
based on DIP switch settings.
Supports an output with current carrying capacity of 1A @ 24V DC.
DIP No
Name
State
Status
1
PWR
ON
Primary power input source alarm trigger enabled.
OFF
Primary power input source alarm trigger disabled.
2
RPS
ON
Redundant power input source alarm trigger enabled.
OFF
Redundant power input source alarm trigger disabled.

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TI-PG541i
5
SFP Transceiver/Optical Cable Installation
1. Remove the rubber plug from the SFP slot.
Note: For any unused ports or SFP slots, it is recommended to leave the
rubber plugs installed during operation.
2. Slide the selected SFP module into the selected SFP slot (Make sure the SFP
module is aligned correctly with the inside of the slot)
3. Insert and slide the module into the SFP slot until it clicks into place.
4. Remove any rubber plugs that may be present in the SFP module’s slot.
5. Align the fiber cable’s connector with the SFP module’s mouth and insert the
connector
6. Slide the connector in until a click is heard
7. If you want to pull the connector out, first push down the release clip on top
of the connector to release the connector from the SFP module
To properly connect fiber cabling:Check that the fiber terminators are clean. You can
clean the cable plugs by wiping them gently with a clean tissue or cotton ball moistened
with a little ethanol. Dirty fiber terminators on fiber optic cables will impair the quality of
the light transmitted through the cable and lead to degraded performance on the port.
Note: When inserting the cable, be sure the tab on the plug clicks into position to
ensure that it is properly seated.

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6
Switch Installation
DIN-Rail Installation
The site where the switch will be installed may greatly affect its performance. When
installing, consider the following pointers:
Note: The switch model may be different than the one shown in the example
illustrations.
Install the switch in the appropriate location. Please refer to the technical
specifications at the end of this manual for the acceptable operating temperature
and humidity ranges.
Install the Switch in a site free from strong electromagnetic field generators (such
as motors), vibration, dust, and direct exposure to sunlight.
Install the switch in a location that is not affected by strong electromagnetic field
generators (such as motors), vibration, dust, and direct sunlight.
Leave at least 10cm of space at the front and rear of the switch for ventilation.
Fasten the DIN-Rail bracket to the rear of the switch using the included
fasteners/screws.
Note: The DIN-Rail bracket may already be installed to your switch when received.
The movable clip at the top of the DIN-Rail bracket should be on top.
The switch can be installed to a 35mm (W) DIN-Rail located in cabinet, rack, or
enclosure.
To mount the switch to a DIN-Rail using the attached DIN-Rail bracket, position the
switch in front of the DIN-Rail and hook the bracket over the top of the rail.
Then rotate the switch downward towards the rail until your hear a click indicating the
bracket is secure and locked into place.
To unmount the switch from the DIN-Rail, slightly pull the switch downwards to clear
the bottom of the DIN-Rail and rotate away from DIN-Rail to unmount.

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7
Install power supply connections
Connect the power supply (sold separate, e.g. TRENDnet TI-S24048) to the switch
terminal block as shown below.
Note: Polarities V+ and V- should match between power supply and connections to
switch terminal block.
Optional: The switch chassis can also be connected to a known ground point for
additional safety and protection (grounding wire not included).
Basic IP Configuration
2. Assign a static IP address to your computer’s network adapter in the subnet of
192.168.10.x (e.g. 192.168.10.25) and a subnet mask of 255.255.255.0.
4. Open your web browser, and type the IP address of the switch in the address bar, and
then press Enter. The default IP address is 192.168.10.200.
5. Enter the User Name and Password, and then click Login. By default:
User Name: admin
Password: admin
Note: User name and password are case sensitive.

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6. Click Basic Settings and then click General Settings.
7. Configure the switch IP address settings to be within your network subnet, then click
Apply.Note: You may need to modify the static IP address settings of your computer’s
network adapter to IP address settings within your subnet in order to regain access to
the switch
.
8. Click Save at the top right.
9. When confirmation message appears click OK.
Note: Once the settings are saved, you can connect the switch to your network.

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TRENDnet User’s Guide
TI-PG541i
Connect additional devices to your switch
You can connect additional computers or other network devices to your switch using Ethernet cables to connect them to one of the available Gigabit PoE+ Ports (1-8). Check the status of
the LED indicators on the front panel of your switch to ensure the physical cable connection from your computer or device.
Note: If you encounter issues connecting to your network, there may be a problem with your computer or device network settings. Please ensure that your computer or device network
settings (also called TCP/IP settings) are configured properly within the network subnet your switch is connected.

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3
Accessing switch management interfaces
Access your switch command line interface
Note: The system may be managed using the Telnet protocol. The Telnet protocol is
enabled by default. Throughout this user’s guide, the term “CLI Configuration” will be
used reference access through the command line interface.
1. Connect your computer to one of the available Ethernet ports and make sure your
computer and switch are assigned to an IP address with the same IP subnet.
2. On your computer, run the terminal emulation program (ex. HyperTerminal,
TeraTerm, Putty, etc.) and set the program to use the Telnet protocol and enter the IP
address assigned to the switch. The default IP address of the switch is 192.168.10.200
/ 255.255.255.0.
3. The terminal emulation window should display a prompt for user name and
password.
Enter the user name and password. By default:
Console User Name: admin
Note: User Name and Password are case sensitive.
Enable Mode/Privileged Exec User Name: admin
Enable Mode/Privileged Exec Password: admin
Setting
Default Value
Default Username
admin
Default Password
admin
Setting
Default Value
IP Address
192.168.10.200
Subnet Mask
255.255.255.0
Default Gateway
0.0.0.0
Management VLAN
1
Default Username
admin
Default Password
admin

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4
CLI Command Modes
Node
Command
Description
enable
show hostname
This command displays the system’s network
name.
configure
reboot
This command reboots the system.
eth0
ip address A.B.C.D/M
This command configures a static IP and subnet
mask for the system.
interface
show
This command displays the current port
configurations.
vlan
show
This command displays the current VLAN
configurations.
The Node type:
enable
Its command prompt is “TI-PG541I#”.
It means these commands can be executed in this command prompt.
configure
Its command prompt is “TI-PG541I(config)#”.
It means these commands can be executed in this command prompt.
In Enable code, executing command “configure terminal” enter the configure
node.
TI-PG541I# configure terminal
eth0
Its command prompt is “TI-PG541I(config-if)#”.
It means these commands can be executed in this command prompt.
In Configure code, executing command “interface eth0” enter the eth0
interface node.
TI-PG541I(config)#interface eth0
TI-PG541I(config-if)#
interface
Its command prompt is “TI-PG541I(config-if)#”.
It means these commands can be executed in this command prompt.
In Configure code, executing command “interface gigaethernet1/0/5” enter
the interface port 5 node.
Or
In Configure code, executing command “interface fastethernet1/0/5” enter
the interface port 5 node.
Note: depend on your port speed, gigaethernet1/0/5 for gigabit Ethernet
ports and fastethernet1/0/5 for fast Ethernet ports.
TI-PG541I(config)#interface gigaethernet1/0/5
TI-PG541I(config-if)#
vlan
Its command prompt is “TI-PG541I(config-vlan)#”.
It means these commands can be executed in this command prompt.
In Configure code, executing command “vlan 2” enter the vlan 2 node.
Note: where the “2” is the vlan ID.
TI-PG541I(config)#vlan 2
TI-PG541I(config-vlan)#

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Access your switch web management page
Note: Your switch default management IP address http://192.168.10.200 is accessed
through the use of your Internet web browser (e.g. Internet Explorer®, Firefox®,
Chrome™, Safari®, Opera™) and will be referenced frequently in this User’s Guide.
Throughout this user’s guide, the term Web Conifiguration will be used to reference
access from web management page.
1. Open your web browser and go to the IP address http://192.168.10.200. Your switch
will prompt you for a user name and password.
2. Enter the user name and password. By default:
User Name: admin
Password: admin
Note: User Name and Password are case sensitive.
Parameter
Description
User ID
Enter the user name.
Password
Enter the password.
Default:
User name: admin
Password: admin

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6
System Information
CLI Configuration
Node
Command
Description
enable
show hostname
This command displays the system’s network
name.
enable
show interface eth0
This command displays the current Eth0
configurations.
enable
show model
This command displays the system information.
enable
show running-config
This command displays the current operating
configurations.
enable
show system-info
This command displays the system’s CPU loading
and memory information.
enable
show uptime
This command displays the system up time.
Web Configuration
System Status > System Information
Parameter
Description
Model Name
This field displays the model name of the Switch.
Host name
This field displays the name of the Switch.
Boot Code Version
This field displays the boot code version.
Firmware Version
This field displays the firmware version.
Built Date
This field displays the built date of the firmware.
DHCP Client
This field displays whether the DHCP client is enabled on the
Switch.

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IP Address
This field indicates the IP address of the Switch.
Subnet Mask
This field indicates the subnet mask of the Switch.
Default Gateway
This field indicates the default gateway of the Switch.
MAC Address
This field displays the MAC (Media Access Control) address of the
Switch.
Serial Number
The serial number assigned by manufacture for identification of
the unit.
Management
VLAN
This field displays the VLAN ID that is used for the Switch
management purposes.
CPU Loading
This field displays the percentage of your Switch’s system load.
Memory
Information
This field displays the total memory the Switch has and the
memory which is currently available (Free) and occupied
(Usage).
Current Time
This field displays current date (yyyy-mm-dd) and time
(hh:mm:ss).
Refresh
Click this to update the information in this screen.
Basic Settings
General Settings
System
Management VLAN
To specify a VLAN group which can access the Switch.
The valid VLAN range is from 1 to 4094.
If you want to configure a management VLAN, the management VLAN should
be created first and the management VLAN should have at least one member
port.
Host Name
The hostname is same as the SNMP system name. Its length is up to 64 characters.
The first 16 characters of the hostname will be configured as the CLI prompt.
Default Settings
The default Hostname is TI-PG541I
The default DHCP client is disabled.
The default Static IP is 192.168.10.200
Subnet Mask is 255.255.255.0
Default Gateway is 0.0.0.0
Management VLAN is 1.
CLI Commands
Node
Command
Description
configure
Reboot
This command reboots the system.
configure
hostname STRINGS
This command sets the system's network
name.
configure
interface eth0
This command enters the eth0 interface
node to configure the system IP.
eth0
Show
This command displays the eth0
configurations.
eth0
ip address A.B.C.D/M
This command configures a static IP and
subnet mask for the system.
eth0
ip address default-
gateway A.B.C.D
This command configures the system
default gateway.
eth0
ip dhcp client
(disable|enable|renew)
This command configures a DHCP client
function for the system.
Disable: Use a static IP address on the
switch.
Enable & Renew: Use DHCP client to get an
IP address from DHCP server.

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eth0
management vlan
VLANID
This command configures the management
vlan.
Example: The procedures to configure an IP address for the Switch.
To enter the configure node.
TI-PG541I#configure terminal
TI-PG541I(config)#
To enter the ETH0 interface node.
TI-PG541I(config)#interface eth0
TI-PG541I(config-if)#
To get an IP address from a DHCP server.
TI-PG541I(config-if)#ip dhcp client enable
To configure a static IP address and a gateway for the Switch.
TI-PG541I(config-if)#ip address 192.168.202.111/24
TI-PG541I(config-if)#ip address default-gateway 192.168.202.1
Web Configuration
Basic Settings > General Settings > System
IP Address
Configures a IPv4 address for your Switch in dotted decimal
notation. For example, 192.168.10.200.
Subnet Mask
Enter the IP subnet mask of your Switch in dotted decimal
notation for example 255.255.255.0.
Default Gateway
Enter the IP address of the default outgoing gateway in dotted
decimal notation, for example 192.168.10.1.

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Jumbo Frame
Jumbo frames are Ethernet frames with a payload greater than 1500 bytes. Jumbo frames
can enhance data transmission efficiency in a network. The bigger the frame size, the
better the performance.
Notice:
The jumbo frame settings will apply to all ports.
If the size of a packet exceeds the jumbo frame size, the packet will be dropped.
The available values are 10240, 9216, 1522, 1536, 1552.
Default Settings
The default jumbo frame is 10240 bytes.
CLI Configuration
Node
Command
Description
enable
show jumboframe
This command displays the
current jumbo frame settings.
configure
jumboframe
(10240|9216|1522|1536|1552)
This command configures the
maximum number of bytes of
frame size.
Web Configuration
Basic Settings > General Settings > Jumbo Frame
Parameter
Description
Frame Size
This field configures the maximum number of bytes of frame size
for specified port(s).
Apply
Click this button to take effect the settings.
Refresh
Click this button to reset the fields to the last setting.
SNTP
The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer
systems over packet-switched, variable-latency data networks. A less complex
implementation of NTP, using the same protocol but without requiring the storage of
state over extended periods of time is known as the Simple Network Time Protocol
(SNTP). NTP provides Coordinated Universal Time (UTC). No information about time
zones or daylight saving time is transmitted; this information is outside its scope and must
be obtained separately.
UDP Port: 123.
Daylight saving is a period from late spring to early fall when many countries set their
clocks ahead of normal local time by one hour to give more daytime light in the evening.
Note:

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1. The SNTP server always replies the UTC current time.
2. When the Switch receives the SNTP reply time, the Switch will adjust the time
with the time zone configuration and then configure the time to the Switch.
3. If the time server’s IP address is not configured, the Switch will not send any
SNTP request packets.
4. If no SNTP reply packets, the Switch will retry every 10 seconds forever.
5. If the Switch has received SNTP reply, the Switch will re-get the time from NTP
server every 24 hours.
6. If the time zone and time NTP server have been changed, the Switch will
repeat the query process.
7. No default SNTP server.
Default Settings
Current Time:
-----------------------------------------------
Time: 0:3:51 (UTC)
Date: 1970-1-1
Time Server Configuration:
-----------------------------------------------
Time Zone : +00:00
IP Address: 0.0.0.0
DayLight Saving Time Configuration:
-----------------------------------------------
State : disabled
Start Date: None.
End Date : None.
CLI Configuration
Node
Command
Description
enable
show time
This command displays current time
and time configurations.
configure
time HOUR:MINUTE:SECOND
Sets the current time on the Switch.
hour: 0-23
min: 0-59
sec: 0-59
Note: If you configure Daylight Saving
Time
after you configure the time, the
Switch will apply Daylight Saving Time.
configure
time date YEAR/MONTH/DAY
Sets the current date on the Switch.
year: 1970-
month: 1-12
day: 1-31
configure
time daylight-saving-time
This command enables the daylight
saving time.
configure
time daylight-saving-time
start-date (first | second |
third | fourth | last) (Sunday
| Monday | Tuesday |
Wednesday | Thursday |
Friday | Saturday) MONTH
OCLOCK
This command sets the start date for
the Daylight Saving Time.
For Example: first Sunday 4 0 (AM:0 1st
Sunday in April)
configure
time daylight-saving-time
end-date (first | second |
third | fourth | last) (Sunday
| Monday | Tuesday |
Wednesday | Thursday |
Friday | Saturday) MONTH
OCLOCK
This command sets the end date for
the Daylight Saving Time.
For Example: Last Sunday 10 18 (PM: 6
Last Sunday in October)