ip sla 1
	 tcp-connect 192.168.1.1 99 control disable
	 threshold 1 
	 timeout 1
	 frequency 1
	ip sla schedule 1 life 300 start-time now

SLA Sample UDP Port
udp connections to 192.168.1.1 port 100 from sourceip 1.2.3.4 and sourceport 12345 every 1 second

	ip sla 2<br />	 udp-echo 192.168.1.1 100 source-ip 1.2.3.4 source-port 12345 control disable<br />	 threshold 1	<br />	 timeout 1<br />	 frequency 1<br />	ip sla schedule 2 life 300 start-time now<br />

SLA Sample ICMP
tcp connections to 192.168.1.1 port 100 every 1 second

	ip sla 3<br />	 icmp-echo 192.168.1.1<br />	 threshold 1<br />	 timeout 1<br />	 frequency 1<br />	ip sla schedule 3 life 300 start-time now<br />

SLA Sample FTP
FTP to check, if a file is on a FTP server

	ip sla 11<br />	 ftp get ftp://user:password@host/file_name<br />	!<br />	ip sla schedule 11 start-time now<br /><br />

SLA Sample HTTP
HTTP connections to 192.168.1.1 port 100 every 1 second with file index.html
(Limit: Minimum frequency for HTTP should be 60sec )

	ip sla 4<br />	 http get http://192.168.2.100/index.html<br />	 threshold 1<br />	 timeout 1<br />	 frequency 60<br />	ip sla schedule 4 life 300 start-time now<br />

SLA Sample HTTP (RAW)
HTTP connections to 192.168.1.1 every 1 second with RAW Code
(Limit: Minimum frequency for HTTP should be 60sec )

	ip sla 5<br />	 http raw http://192.168.1.1<br />	 http-raw-request<br />	  GET /ch/index.html HTTP/1.0\r\n\r\n<br />	  exit<br />	 threshold 1<br />	 timeout 1<br />	 frequency 60<br />	ip sla schedule 5 life 300 start-time now<br />

SLA Sample DNS
DNS request www.laber.com every 9 second to dns server 192.168.1.1
Minimum frequency for DNS operation should be 9

	ip sla 6<br />	 dns www.laber.com name-server 192.168.1.1<br /> 	 timeout 1<br /> 	 threshold 1<br />  	 frequency 9<br />	ip sla schedule 10 life 300 start-time now<br />

Schedule the SLA

	<br />	ip sla schedule 1 start-time 10:00:00 life 300 recurring           <- every day at 10:00 for 300 seconds<br />	ip sla schedule 2 start-time now life forever                      <- start now and run forever<br />	ip sla schedule 3 start-time 10:00:00 1 Jan life 1000              <- start on 1.Jan for 1000 seconds<br />

 <br />	puts "Creating UDP"<br />	set count 2000<br />	for {set X 1} {$X<$count} {incr X} {<br />	puts $X<br />	ios_config "ip sla $X" "udp-echo 192.168.1.1 100 control disable" "threshold 1" "timeout 1" "frequency 1"<br />	ios_config "ip sla schedule $X life 300 start-time now"<br />	}<br />

and for removing all entries

	puts "Deleting"<br />	set count 2000<br />	for {set X 1} {$X<$count} {incr X} {<br />	puts $X<br />	ios_config "no ip sla $X "<br />    	}<br />

New Sample with Sourceport and Source-IP

 <br />	puts "Creating UDP"<br />	set count 2000<br />	for {set X 1} {$X<$count} {incr X} {<br />	puts $X<br />	ios_config "ip sla $X" "udp-echo 192.168.1.1 100 source-ip 1.2.3.4 source-port 12345 control disable" "threshold 1" "timeout 1" "frequency 1"<br />	ios_config "ip sla schedule $X life 300 start-time now"<br />	}<br />

	evil-router(config-ip-sla-tcp)#tos ?<br />	  <0-255>  Type of Service Value<br />

2. Some problem with the order in the configfile and the dependency of timeout and threshold
If you configure timeout 1 and threshold 1, you must configure threshold before timeout, but, after
you see in the configuratin file following: timeout is before treshold.

	ip sla 4<br />	 tcp-connect 192.168.2.100 98 control disable<br />	 tos 1<br />	 timeout 1<br />	 threshold 1<br />	 frequency 1<br />	ip sla schedule 4 life 60 start-time now<br />

and after a restart you see following boot message:

	<br />	1 DSL controller<br />	9 FastEthernet interfaces<br />	1 ISDN Basic Rate interface<br />	62720K bytes of ATA CompactFlash (Read/Write)<br />	Installed image archive<br />	%Error: timeout value is less than threshold 5000<br />	%Illegal Value: Cannot set Frequency to be less than Timeout<br />	%Error: timeout value is less than threshold 5000<br />	%Illegal Value: Cannot set Frequency to be less than Timeout<br />	<br />	<br />		<br />	Press RETURN to get started!<br />	<br />

I see this on my cisco 1800 router

	evil-router#sh version<br />	Cisco IOS Software, C180X Software (C180X-ADVIPSERVICESK9-M), Version 12.4(22)T, RELEASE SOFTWARE (fc1)<br />	Technical Support: http://www.cisco.com/techsupport<br />

Update:(05.01.2009)
Tests with other routers and diffenet IOS versions shows me, that that must be a BUG on this version on my Cisco 1800 Router.

 
Cisco Dokumentation
 
threshold milliseconds
(Optional) Sets the upper threshold value for calculating network monitoring statistics created by an IP SLAs operation.
Example:
Router(config-sla-monitor-echo)# threshold 10000
 
timeout milliseconds
(Optional) Sets the amount of time an IP SLAs operation waits for a response from its request packet.
Example:
Router(config-sla-monitor-echo)# timeout 10000