System configuration

Sections

The system configuration contains basic settings for the whole router. Larger subsystems such as the network configuration, the DHCP and DNS server, and similar, have their own configuration file.

System

The system section contains settings that apply to the most basic operation of the system, such as the hostname, the time zone, and how and where to write logging information to. OpenWRT creates these default settings:

config 'system'
	option 'hostname'	'OpenWrt'
	option 'timezone'	'UTC

'

These options can be set in the system section:

Name	Type	Required	Default	Description
`hostname`	string	no	`OpenWrt`	The hostname for this system. Avoid points, even if they are within single7double quotes. For example `'my.hostname'` will show only the `'my'` part
`buffersize`	integer	no	kernel specific	Size of the kernel message buffer.
`conloglevel`	integer	no	`7`	Number between 1-8. The maximum log level for kernel messages to be logged to the console. Only messages with a level lower than this will be printed to the console. Higher level messages have lower log level number. Highest level messages are ones with log level 0. If you want more verbous messages in console put conloglevel to 8 if you want less messages lower conloglevel to 4 or even less.
`cronloglevel`	integer	no	`5`	The minimul level for cron messages to be logged to syslog. `0` will print all debug messages, `8` will log command executions, and `9` or higher will only log error messages.
`klogconloglevel`	integer	no	`7`	The maximum log level for kernel messages to be logged to the console. Only messages with a level lower than this will be printed to the console. Identical to `conloglevel` and will override it.
`log_buffer_size`	integer	no	16	Size of the log buffer of the "new" procd based system log, that is output by the logread command. Tried 32 kB, more should be possible. There have been Bugs and enhancements to this feature in the past, see here for more info
`log_file`	string	no	no log file	File to write log messages to (type `file`). The default is to not write a log in a file. The most often used location for a system log file is `/var/log/messages`.
`log_ip`	IP address	no	(none)	IP address of a syslog server to which the log messages should be sent in addition to the local destination.
`log_port`	integer	no	`514`	Port number of the remote syslog server specified with `log_ip`.
`log_prefix`	string	no	(none)	Adds a prefix to all log messages send over network.
`log_proto`	string	no	`udp`	Sets the protocol to use for the connection, either 'tcp' or 'udp'.
`log_remote`	bool	no	`1`	Enables remote logging.
`log_size`	integer	no	`16`	Size of the file or circular memory buffer in KiB.
`log_trailer_null`	bool	no	`0`	Use \0 instead of \n as trailer when using TCP.
`log_type`	string	no	`circular`	Either `circular` or `file`.
`timezone`	string	no	`UTC`	The time zone that date and time should be rendered in by default. A list of possible values is in the `TZ string` column of the Time Zones table.
`zonename`	string	no	`UTC`	Only useful when using eglibc and zoneinfo! (`LIBC_USE_EGLIBC`, `PACKAGE_zoneinfo-`) The time zone that date and time should be rendered in by default. Suppose you want to use Brussels' timezone, set this value to `Europe/Brussels`. Possible values can be found by running `(cd /usr/share/zoneinfo; find )`

If you want to change 'hostname' instead of localhost.localdomain in remote syslog, you have to add -h <hostname> parameter in /etc/init.d/log start parameters. It should be read from system config, but it's not (yet) - remove after fix.
There should be tcp/udp field in LuCI syslog settings. Now it's hard to tell if OpenWRT supports TCP syslog.
If logging locally to a file (God forbid) you need to need to set the log_remote option to 0 and make sure you set the log_type to file, set the log_size and log_buffer_size as well as the cronloglevel and conloglevel values

Remote Time (ntp)

In /etc/config/system (rev28612) busybox-rdate (was invoked by scripts) has been replaced with busybox-nptd (can run as a daemon) to avoid race condition and also to use current NTP. The remote time is since configured in /etc/config/system and not in /etc/config/timeserver any longer.

Old scripts first checked if a lease time server is defined for the interface in the network config.
If not available or syncing fails, then it searches for time servers in the timeserver config that are either explicitly defined for that interface or via the global setting in the system config.


config 'timeserver' 'ntp'
        list 'server'     '0.openwrt.pool.ntp.org'
        list 'server'     '1.openwrt.pool.ntp.org'
        list 'server'     '2.openwrt.pool.ntp.org'
        list 'server'     '3.openwrt.pool.ntp.org'
        option enable_server 0

There are at least two valid option defined for the timeserver ntp section:

Name	Type	Required	Default	Description
`server`	list of hostnames	no	(none)	Defines the pool of NTP servers to poll the time from. If the list is empty, the builtin NTP daemon is not started.
`enable_server`	boolean	no	0	You can put busybox-ntpd in client mode only: by defining at least one host to `server` and puting `enable_server` 0 client & server mode: by putting `enable_server` to 1, (busybox-ntpd listens to UDP 123 by default), server mode only: by not defining any servers in the config and just put `enable_server` 1 (ntpd will answer with the time of the router)

TODO: I've replaced "config_foreach getpeers timeserver" with "config_get peers ntp server" because we want ntp timeserver, not random ones (to pre-answer if someone want to say that it's intrusive …)

If the above configuration is missing in the file /etc/config/system (or faulty), busybox-nptd will not be started! You can manually invoke it by e.g.

ntpd -q -p 0.openwrt.pool.ntp.org

Leds

OpenWRT supports using the router's LEDs to give feedback about its status. Which LEDs are available to be controlled through OpenWRT depends on the specific router model.

LEDs are represented by entries in the sys filesystem. You can check which LEDs are available in the /sys/class/leds directory. The name of an entry typically consists of the name of the hardware providing the LED (the router model), the color of the LED, and it's designation (usually the label on the case). Some LEDs can show different colors. In this case, you will find one entry per color.

The LED can be controlled by various events in the system, which is selected by the trigger option. Depending on the trigger, additional options must be specified.

First of all, you need to know which triggers are available for a led, to do that simply look at trigger file of that led. Example:

cat /sys/class/leds/LED/trigger
[none] timer default-on netdev morse usbdev

opkg list-installed kmod-ledtrig*
opkg list kmod-ledtrig*

To allow more triggers it's necessary to build your own OpenWRT or install some packages (like ledtrig-morse).

If you build your own OpenWrt and try to install any kmod-* package from OpenWrt repository, it will fail. In this case is safe to force install:

opkg install kmod-ledtrig-morse --force-depends

None

The LED is always in default state. Unlisted LED are default OFF, so this is only useful to declare a LED to be always ON.

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`none`

Timer

The LED blinks with the configured on/off frequency.

opkg install kmod-ledtrig-timer

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`delayoff`	integer	yes	(none)	How long (in milliseconds) the LED should be off.
`delayon`	integer	yes	(none)	How long (in milliseconds) the LED should be on.
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`timer`

Default-on

The LED is ON. Deprecated, use default=1 trigger=none instead.

opkg install kmod-ledtrig-default-on

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`default-on`

Heartbeat

The LED flashes to simulate actual heart beat thump-thump-pause. The frequency is in direct proportion to 1-minute average CPU load.¹⁾

opkg install kmod-ledtrig-heartbeat

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`heartbeat`

Note:to test the heartbeat take a look at snippets.

Flash Writes

The LED flashes as data is written to flash memory.

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`nand-disk`

Network Activity

The LED flashes with link status and/or send and receive activity on the configured interface.

opkg install kmod-ledtrig-netdev

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`dev`	string	yes	(none)	Name of the network interface which status should be reflected
`mode`	string	yes	(none)	One or more of `link`, `tx`, or `rx`, seperated by spaces
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`netdev`

WiFi Activity

this subsection requires expert's review.

The LED flashes on events triggered in physical interface, rather than in software network interface. Besides phy triggers have more events, it also provides possibility of static LED setup in case you want to monitor your 2.4 GHz radio (phy0 usually) and 5 GHz radio (phy1 usually) separately. netdev can't guarantee this distinguishing since wlan0 may be referring to 2.4 GHz or 5 GHz radio based on current network setup.

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`phy0rx`, `phy0tx`, `phy0assoc`, `phy0radio` or `phy0tpt`

phy0rx - flashes on reception.
phy0tx - flashes on transmission.
phy0assoc - flashes on client association.
phy0radio - ( hard to say what this is supposed to do; this option did nothing on my tl-wr1043nd with Backfire 10.03.1, r29592 and Attitude Adjustment r32793)
phy0tpt - flashes slowly and steadily on network activity.²⁾

USB Device

The LED turns ON if USB device is connected.

opkg install kmod-ledtrig-usbdev

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`dev`	string	yes	(none)	Name of USB device to monitor (in this example '1-1').
`interval`	integer	yes	(none)	Interval in ms when device is active.
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`usbdev`

To find out device name use logread to search for it or list /sys/bus/usb/devices (for this example, there would be /sys/bus/usb/devices/1-1 device).

Morse Code

The LED signals a message using Morse code.

Requires the kmod-ledtrig-morse package. UCI configuration was added in revision r34380.

opkg install kmod-ledtrig-morse

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON
`delay`	integer	no	150	Dit length in milliseconds
`dev`	string	yes	(none)	Name of USB device to monitor (in this example '1-1').
`message`	string	no	(none)	The message to signal
`sysfs`	string	yes	(none)	LED device name
`trigger`	string	yes	(none)	`morse`

If you don't have a recent enough version, you can set trigger to "morse" and control the behavior by writing to the message and delay files in /sys/class/leds/<name>.

GPIO

Allows LEDs to be controlled by gpio events.

opkg install kmod-ledtrig-gpio

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON

Net filter

Flash LED when particular packets passes through your machine.

Necessary software modules:

opkt install kmod-ipt-led (that one already contains module 'kmod-ledtrig-netfilter')
opkt install iptables-mod-led

Examples:

To create an LED trigger for incoming SSH traffic:

iptables -I 1 INPUT -p tcp --dport 22 -j LED --led-trigger-id ssh --led-delay 1000

To let your WAN led flash everytime the router forwards any IP package from or to WAN:

iptables -I 1 FORWARD -j LED --led-trigger-id wan-forward --led-delay 1000

Then attach the new trigger to an LED on your system referred by its id:

echo netfilter-[YOUR LED TRIGGER ID] > /sys/class/leds/<ledname>/trigger

Name	Type	Required	Default	Description
`default`	integer	no	0	LED state before trigger: `0` means OFF and `1` means ON

Examples

Please remember to change the sysfs option to LEDs that are actually present on your router. This can be done easily through LuCI. You may find some other examples in snippets. Following examples are from /etc/config/system file:

Heartbeat led

config 'led'
	option 'sysfs'		'wrt160nl:amber:wps'
	option 'trigger'	'heartbeat

'

WLAN led


config 'led' 'wlan_led'
        option 'name'           'WLAN'
        option 'sysfs'          'tl-wr1043nd:green:wlan'
        option 'trigger'        'netdev'
        option 'dev'            'wlan0'
        option 'mode'           'link tx rx'

3G led

The 3G LED lits up in blue when an USB-dongle properly registers with the 3G/EDGE/GPRS network. Tested on Asus's WL-330N3G router.


config 'led'
        option 'name'           '3G'
        option 'sysfs'          'asus:blue:3g'
        option 'trigger'        'netdev'
        option 'dev'            '3g-wan'
        option 'mode'           'link'

Timer led - 500ms ON, 2000ms OFF

config 'led'
	option 'sysfs'		'wrt160nl:blue:wps'
	option 'trigger'	'timer'
	option 'delayon'	'500'
	option 'delayoff'	'2000

'

Time Zones

Location	TZ string
Africa/Abidjan	GMT0
Africa/Accra	GMT0
Africa/Addis Ababa	EAT-3
Africa/Algiers	CET-1
Africa/Asmara	EAT-3
Africa/Bamako	GMT0
Africa/Bangui	WAT-1
Africa/Banjul	GMT0
Africa/Bissau	GMT0
Africa/Blantyre	CAT-2
Africa/Brazzaville	WAT-1
Africa/Bujumbura	CAT-2
Africa/Casablanca	WET0
Africa/Ceuta	CET-1CEST,M3.5.0,M10.5.0/3
Africa/Conakry	GMT0
Africa/Dakar	GMT0
Africa/Dar es Salaam	EAT-3
Africa/Djibouti	EAT-3
Africa/Douala	WAT-1
Africa/El Aaiun	WET0
Africa/Freetown	GMT0
Africa/Gaborone	CAT-2
Africa/Harare	CAT-2
Africa/Johannesburg	SAST-2
Africa/Kampala	EAT-3
Africa/Khartoum	EAT-3
Africa/Kigali	CAT-2
Africa/Kinshasa	WAT-1
Africa/Lagos	WAT-1
Africa/Libreville	WAT-1
Africa/Lome	GMT0
Africa/Luanda	WAT-1
Africa/Lubumbashi	CAT-2
Africa/Lusaka	CAT-2
Africa/Malabo	WAT-1
Africa/Maputo	CAT-2
Africa/Maseru	SAST-2
Africa/Mbabane	SAST-2
Africa/Mogadishu	EAT-3
Africa/Monrovia	GMT0
Africa/Nairobi	EAT-3
Africa/Ndjamena	WAT-1
Africa/Niamey	WAT-1
Africa/Nouakchott	GMT0
Africa/Ouagadougou	GMT0
Africa/Porto-Novo	WAT-1
Africa/Sao Tome	GMT0
Africa/Tripoli	EET-2
Africa/Tunis	CET-1
Africa/Windhoek	WAT-1WAST,M9.1.0,M4.1.0
America/Adak	HAST10HADT,M3.2.0,M11.1.0
America/Anchorage	AKST9AKDT,M3.2.0,M11.1.0
America/Anguilla	AST4
America/Antigua	AST4
America/Araguaina	BRT3
America/Argentina/Buenos Aires	ART3
America/Argentina/Catamarca	ART3
America/Argentina/Cordoba	ART3
America/Argentina/Jujuy	ART3
America/Argentina/La Rioja	ART3
America/Argentina/Mendoza	ART3
America/Argentina/Rio Gallegos	ART3
America/Argentina/Salta	ART3
America/Argentina/San Juan	ART3
America/Argentina/Tucuman	ART3
America/Argentina/Ushuaia	ART3
America/Aruba	AST4
America/Asuncion	PYT4PYST,M10.1.0/0,M4.2.0/0
America/Atikokan	EST5
America/Bahia	BRT3
America/Barbados	AST4
America/Belem	BRT3
America/Belize	CST6
America/Blanc-Sablon	AST4
America/Boa Vista	AMT4
America/Bogota	COT5
America/Boise	MST7MDT,M3.2.0,M11.1.0
America/Cambridge Bay	MST7MDT,M3.2.0,M11.1.0
America/Campo Grande	AMT4AMST,M10.3.0/0,M2.3.0/0
America/Cancun	CST6CDT,M4.1.0,M10.5.0
America/Caracas	VET4:30
America/Cayenne	GFT3
America/Cayman	EST5
America/Chicago	CST6CDT,M3.2.0,M11.1.0
America/Chihuahua	MST7MDT,M4.1.0,M10.5.0
America/Costa Rica	CST6
America/Cuiaba	AMT4AMST,M10.3.0/0,M2.3.0/0
America/Curacao	AST4
America/Danmarkshavn	GMT0
America/Dawson	PST8PDT,M3.2.0,M11.1.0
America/Dawson Creek	MST7
America/Denver	MST7MDT,M3.2.0,M11.1.0
America/Detroit	EST5EDT,M3.2.0,M11.1.0
America/Dominica	AST4
America/Edmonton	MST7MDT,M3.2.0,M11.1.0
America/Eirunepe	AMT4
America/El Salvador	CST6
America/Fortaleza	BRT3
America/Glace Bay	AST4ADT,M3.2.0,M11.1.0
America/Goose Bay	AST4ADT,M3.2.0/0:01,M11.1.0/0:01
America/Grand Turk	EST5EDT,M3.2.0,M11.1.0
America/Grenada	AST4
America/Guadeloupe	AST4
America/Guatemala	CST6
America/Guayaquil	ECT5
America/Guyana	GYT4
America/Halifax	AST4ADT,M3.2.0,M11.1.0
America/Havana	CST5CDT,M3.2.0/0,M10.5.0/1
America/Hermosillo	MST7
America/Indiana/Indianapolis	EST5EDT,M3.2.0,M11.1.0
America/Indiana/Knox	CST6CDT,M3.2.0,M11.1.0
America/Indiana/Marengo	EST5EDT,M3.2.0,M11.1.0
America/Indiana/Petersburg	EST5EDT,M3.2.0,M11.1.0
America/Indiana/Tell City	CST6CDT,M3.2.0,M11.1.0
America/Indiana/Vevay	EST5EDT,M3.2.0,M11.1.0
America/Indiana/Vincennes	EST5EDT,M3.2.0,M11.1.0
America/Indiana/Winamac	EST5EDT,M3.2.0,M11.1.0
America/Inuvik	MST7MDT,M3.2.0,M11.1.0
America/Iqaluit	EST5EDT,M3.2.0,M11.1.0
America/Jamaica	EST5
America/Juneau	AKST9AKDT,M3.2.0,M11.1.0
America/Kentucky/Louisville	EST5EDT,M3.2.0,M11.1.0
America/Kentucky/Monticello	EST5EDT,M3.2.0,M11.1.0
America/La Paz	BOT4
America/Lima	PET5
America/Los Angeles	PST8PDT,M3.2.0,M11.1.0
America/Maceio	BRT3
America/Managua	CST6
America/Manaus	AMT4
America/Marigot	AST4
America/Martinique	AST4
America/Matamoros	CST6CDT,M3.2.0,M11.1.0
America/Mazatlan	MST7MDT,M4.1.0,M10.5.0
America/Menominee	CST6CDT,M3.2.0,M11.1.0
America/Merida	CST6CDT,M4.1.0,M10.5.0
America/Mexico City	CST6CDT,M4.1.0,M10.5.0
America/Miquelon	PMST3PMDT,M3.2.0,M11.1.0
America/Moncton	AST4ADT,M3.2.0,M11.1.0
America/Monterrey	CST6CDT,M4.1.0,M10.5.0
America/Montevideo	UYT3UYST,M10.1.0,M3.2.0
America/Montreal	EST5EDT,M3.2.0,M11.1.0
America/Montserrat	AST4
America/Nassau	EST5EDT,M3.2.0,M11.1.0
America/New York	EST5EDT,M3.2.0,M11.1.0
America/Nipigon	EST5EDT,M3.2.0,M11.1.0
America/Nome	AKST9AKDT,M3.2.0,M11.1.0
America/Noronha	FNT2
America/North Dakota/Center	CST6CDT,M3.2.0,M11.1.0
America/North Dakota/New Salem	CST6CDT,M3.2.0,M11.1.0
America/Ojinaga	MST7MDT,M3.2.0,M11.1.0
America/Panama	EST5
America/Pangnirtung	EST5EDT,M3.2.0,M11.1.0
America/Paramaribo	SRT3
America/Phoenix	MST7
America/Port of Spain	AST4
America/Port-au-Prince	EST5
America/Porto Velho	AMT4
America/Puerto Rico	AST4
America/Rainy River	CST6CDT,M3.2.0,M11.1.0
America/Rankin Inlet	CST6CDT,M3.2.0,M11.1.0
America/Recife	BRT3
America/Regina	CST6
America/Rio Branco	AMT4
America/Santa Isabel	PST8PDT,M4.1.0,M10.5.0
America/Santarem	BRT3
America/Santo Domingo	AST4
America/Sao Paulo	BRT3BRST,M10.3.0/0,M2.3.0/0
America/Scoresbysund	EGT1EGST,M3.5.0/0,M10.5.0/1
America/Shiprock	MST7MDT,M3.2.0,M11.1.0
America/St Barthelemy	AST4
America/St Johns	NST3:30NDT,M3.2.0/0:01,M11.1.0/0:01
America/St Kitts	AST4
America/St Lucia	AST4
America/St Thomas	AST4
America/St Vincent	AST4
America/Swift Current	CST6
America/Tegucigalpa	CST6
America/Thule	AST4ADT,M3.2.0,M11.1.0
America/Thunder Bay	EST5EDT,M3.2.0,M11.1.0
America/Tijuana	PST8PDT,M3.2.0,M11.1.0
America/Toronto	EST5EDT,M3.2.0,M11.1.0
America/Tortola	AST4
America/Vancouver	PST8PDT,M3.2.0,M11.1.0
America/Whitehorse	PST8PDT,M3.2.0,M11.1.0
America/Winnipeg	CST6CDT,M3.2.0,M11.1.0
America/Yakutat	AKST9AKDT,M3.2.0,M11.1.0
America/Yellowknife	MST7MDT,M3.2.0,M11.1.0
Antarctica/Casey	WST-8
Antarctica/Davis	DAVT-7
Antarctica/DumontDUrville	DDUT-10
Antarctica/Macquarie	MIST-11
Antarctica/Mawson	MAWT-5
Antarctica/McMurdo	NZST-12NZDT,M9.5.0,M4.1.0/3
Antarctica/Rothera	ROTT3
Antarctica/South Pole	NZST-12NZDT,M9.5.0,M4.1.0/3
Antarctica/Syowa	SYOT-3
Antarctica/Vostok	VOST-6
Arctic/Longyearbyen	CET-1CEST,M3.5.0,M10.5.0/3
Asia/Aden	AST-3
Asia/Almaty	ALMT-6
Asia/Anadyr	ANAT-11ANAST,M3.5.0,M10.5.0/3
Asia/Aqtau	AQTT-5
Asia/Aqtobe	AQTT-5
Asia/Ashgabat	TMT-5
Asia/Baghdad	AST-3
Asia/Bahrain	AST-3
Asia/Baku	AZT-4AZST,M3.5.0/4,M10.5.0/5
Asia/Bangkok	ICT-7
Asia/Beirut	EET-2EEST,M3.5.0/0,M10.5.0/0
Asia/Bishkek	KGT-6
Asia/Brunei	BNT-8
Asia/Choibalsan	CHOT-8
Asia/Chongqing	CST-8
Asia/Colombo	IST-5:30
Asia/Damascus	EET-2EEST,M4.1.5/0,M10.5.5/0
Asia/Dhaka	BDT-6
Asia/Dili	TLT-9
Asia/Dubai	GST-4
Asia/Dushanbe	TJT-5
Asia/Gaza	EET-2EEST,M3.5.6/0:01,M9.1.5
Asia/Harbin	CST-8
Asia/Ho Chi Minh	ICT-7
Asia/Hong Kong	HKT-8
Asia/Hovd	HOVT-7
Asia/Irkutsk	IRKT-8IRKST,M3.5.0,M10.5.0/3
Asia/Jakarta	WIT-7
Asia/Jayapura	EIT-9
Asia/Kabul	AFT-4:30
Asia/Kamchatka	PETT-11PETST,M3.5.0,M10.5.0/3
Asia/Karachi	PKT-5
Asia/Kashgar	CST-8
Asia/Kathmandu	NPT-5:45
Asia/Kolkata	IST-5:30
Asia/Krasnoyarsk	KRAT-7KRAST,M3.5.0,M10.5.0/3
Asia/Kuala Lumpur	MYT-8
Asia/Kuching	MYT-8
Asia/Kuwait	AST-3
Asia/Macau	CST-8
Asia/Magadan	MAGT-11MAGST,M3.5.0,M10.5.0/3
Asia/Makassar	CIT-8
Asia/Manila	PHT-8
Asia/Muscat	GST-4
Asia/Nicosia	EET-2EEST,M3.5.0/3,M10.5.0/4
Asia/Novokuznetsk	NOVT-6NOVST,M3.5.0,M10.5.0/3
Asia/Novosibirsk	NOVT-6NOVST,M3.5.0,M10.5.0/3
Asia/Omsk	OMST-7
Asia/Oral	ORAT-5
Asia/Phnom Penh	ICT-7
Asia/Pontianak	WIT-7
Asia/Pyongyang	KST-9
Asia/Qatar	AST-3
Asia/Qyzylorda	QYZT-6
Asia/Rangoon	MMT-6:30
Asia/Riyadh	AST-3
Asia/Sakhalin	SAKT-10SAKST,M3.5.0,M10.5.0/3
Asia/Samarkand	UZT-5
Asia/Seoul	KST-9
Asia/Shanghai	CST-8
Asia/Singapore	SGT-8
Asia/Taipei	CST-8
Asia/Tashkent	UZT-5
Asia/Tbilisi	GET-4
Asia/Tehran	IRST-3:30IRDT,80/0,264/0
Asia/Thimphu	BTT-6
Asia/Tokyo	JST-9
Asia/Ulaanbaatar	ULAT-8
Asia/Urumqi	CST-8
Asia/Vientiane	ICT-7
Asia/Vladivostok	VLAT-10VLAST,M3.5.0,M10.5.0/3
Asia/Yakutsk	YAKT-9YAKST,M3.5.0,M10.5.0/3
Asia/Yekaterinburg	YEKT-5YEKST,M3.5.0,M10.5.0/3
Asia/Yerevan	AMT-4AMST,M3.5.0,M10.5.0/3
Atlantic/Azores	AZOT1AZOST,M3.5.0/0,M10.5.0/1
Atlantic/Bermuda	AST4ADT,M3.2.0,M11.1.0
Atlantic/Canary	WET0WEST,M3.5.0/1,M10.5.0
Atlantic/Cape Verde	CVT1
Atlantic/Faroe	WET0WEST,M3.5.0/1,M10.5.0
Atlantic/Madeira	WET0WEST,M3.5.0/1,M10.5.0
Atlantic/Reykjavik	GMT0
Atlantic/South Georgia	GST2
Atlantic/St Helena	GMT0
Atlantic/Stanley	FKT4FKST,M9.1.0,M4.3.0
Australia/Adelaide	CST-9:30CST,M10.1.0,M4.1.0/3
Australia/Brisbane	EST-10
Australia/Broken Hill	CST-9:30CST,M10.1.0,M4.1.0/3
Australia/Currie	EST-10EST,M10.1.0,M4.1.0/3
Australia/Darwin	CST-9:30
Australia/Eucla	CWST-8:45
Australia/Hobart	EST-10EST,M10.1.0,M4.1.0/3
Australia/Lindeman	EST-10
Australia/Lord Howe	LHST-10:30LHST-11,M10.1.0,M4.1.0
Australia/Melbourne	EST-10EST,M10.1.0,M4.1.0/3
Australia/Perth	WST-8
Australia/Sydney	EST-10EST,M10.1.0,M4.1.0/3
Europe/Amsterdam	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Andorra	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Athens	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Belgrade	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Berlin	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Bratislava	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Brussels	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Bucharest	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Budapest	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Chisinau	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Copenhagen	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Dublin	GMT0IST,M3.5.0/1,M10.5.0
Europe/Gibraltar	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Guernsey	GMT0BST,M3.5.0/1,M10.5.0
Europe/Helsinki	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Isle of Man	GMT0BST,M3.5.0/1,M10.5.0
Europe/Istanbul	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Jersey	GMT0BST,M3.5.0/1,M10.5.0
Europe/Kaliningrad	EET-2EEST,M3.5.0,M10.5.0/3
Europe/Kiev	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Lisbon	WET0WEST,M3.5.0/1,M10.5.0
Europe/Ljubljana	CET-1CEST,M3.5.0,M10.5.0/3
Europe/London	GMT0BST,M3.5.0/1,M10.5.0
Europe/Luxembourg	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Madrid	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Malta	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Mariehamn	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Minsk	EET-2EEST,M3.5.0,M10.5.0/3
Europe/Monaco	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Moscow	MSK-4
Europe/Oslo	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Paris	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Podgorica	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Prague	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Riga	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Rome	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Samara	SAMT-3SAMST,M3.5.0,M10.5.0/3
Europe/San Marino	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Sarajevo	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Simferopol	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Skopje	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Sofia	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Stockholm	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Tallinn	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Tirane	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Uzhgorod	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Vaduz	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Vatican	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Vienna	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Vilnius	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Volgograd	VOLT-3VOLST,M3.5.0,M10.5.0/3
Europe/Warsaw	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Zagreb	CET-1CEST,M3.5.0,M10.5.0/3
Europe/Zaporozhye	EET-2EEST,M3.5.0/3,M10.5.0/4
Europe/Zurich	CET-1CEST,M3.5.0,M10.5.0/3
Indian/Antananarivo	EAT-3
Indian/Chagos	IOT-6
Indian/Christmas	CXT-7
Indian/Cocos	CCT-6:30
Indian/Comoro	EAT-3
Indian/Kerguelen	TFT-5
Indian/Mahe	SCT-4
Indian/Maldives	MVT-5
Indian/Mauritius	MUT-4
Indian/Mayotte	EAT-3
Indian/Reunion	RET-4
Pacific/Apia	WST11
Pacific/Auckland	NZST-12NZDT,M9.5.0,M4.1.0/3
Pacific/Chatham	CHAST-12:45CHADT,M9.5.0/2:45,M4.1.0/3:45
Pacific/Efate	VUT-11
Pacific/Enderbury	PHOT-13
Pacific/Fakaofo	TKT10
Pacific/Fiji	FJT-12
Pacific/Funafuti	TVT-12
Pacific/Galapagos	GALT6
Pacific/Gambier	GAMT9
Pacific/Guadalcanal	SBT-11
Pacific/Guam	ChST-10
Pacific/Honolulu	HST10
Pacific/Johnston	HST10
Pacific/Kiritimati	LINT-14
Pacific/Kosrae	KOST-11
Pacific/Kwajalein	MHT-12
Pacific/Majuro	MHT-12
Pacific/Marquesas	MART9:30
Pacific/Midway	SST11
Pacific/Nauru	NRT-12
Pacific/Niue	NUT11
Pacific/Norfolk	NFT-11:30
Pacific/Noumea	NCT-11
Pacific/Pago Pago	SST11
Pacific/Palau	PWT-9
Pacific/Pitcairn	PST8
Pacific/Ponape	PONT-11
Pacific/Port Moresby	PGT-10
Pacific/Rarotonga	CKT10
Pacific/Saipan	ChST-10
Pacific/Tahiti	TAHT10
Pacific/Tarawa	GILT-12
Pacific/Tongatapu	TOT-13
Pacific/Truk	TRUT-10
Pacific/Wake	WAKT-12
Pacific/Wallis	WFT-12

¹⁾

Source file of heartbeat trigger

²⁾

in comparison to energetic flashes of tx and rx modes

Old OpenWrt Wiki

Table of Contents

System configuration

Sections

System

Remote Time (ntp)

Leds

None

Timer

Default-on

Heartbeat

Flash Writes

Network Activity

WiFi Activity

USB Device

Morse Code

GPIO

Net filter

Examples

Heartbeat led

WLAN led

3G led

Timer led - 500ms ON, 2000ms OFF

Time Zones

Old OpenWrt Wiki

User Tools

Site Tools

Table of Contents

System configuration

Sections

System

Remote Time (ntp)

Leds

None

Timer

Default-on

Heartbeat

Flash Writes

Network Activity

WiFi Activity

USB Device

Morse Code

GPIO

Net filter

Examples

Heartbeat led

WLAN led

3G led

Timer led - 500ms ON, 2000ms OFF

Time Zones

Page Tools