F5 BIG-IP - LTM Survival Guide - Revision history

Admin: /* Show VS Logs */

2026-03-20T11:34:50Z

Show VS Logs

← Older revision		Revision as of 11:34, 20 March 2026
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	cat /var/log/ltm /var/log/ltm.1 \| grep <VS_NAME>		cat /var/log/ltm /var/log/ltm.1 \| grep <VS_NAME>

	zcat /var/log/ltm*.gz \| grep <VS_NAME>		zcat /var/log/ltm*.gz \| grep <VS_NAME></nowiki>

	</nowiki>

	The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.		The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.

Admin: /* Show VS Logs */

2026-03-20T11:34:39Z

Show VS Logs

← Older revision		Revision as of 11:34, 20 March 2026
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	== Show VS Logs ==		== Show VS Logs ==

			In Linux mode use tail or cat/zcat command :

	<nowiki>		<nowiki>
	tail /var/log/ltm \| grep <VS_NAME></nowiki>		tail /var/log/ltm \| grep <VS_NAME>

			cat /var/log/ltm /var/log/ltm.1 \| grep <VS_NAME>

			zcat /var/log/ltm*.gz \| grep <VS_NAME>

			</nowiki>

	The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.		The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.

Admin: /* Dump VS Traffic */

2026-03-20T11:31:44Z

Dump VS Traffic

← Older revision		Revision as of 11:31, 20 March 2026
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	<nowiki>		<nowiki>
	tcpdump -nni any src or dst 1.2.3.4 and src or dst 5.6.7.8		tcpdump -nni any src or dst 1.2.3.4 and src or dst 5.6.7.8</nowiki>
	</nowiki>

	The backend servers ip/port can be tested with the telnet command.		The backend servers ip/port can be tested with the telnet command.


	== Usefull Links ==		== Usefull Links ==

Admin at 11:30, 20 March 2026

2026-03-20T11:30:28Z

← Older revision		Revision as of 11:30, 20 March 2026
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	'''''[https://it-arts.net/index.php/Category:Wiki Return to Wiki Index]'''''		'''''[https://it-arts.net/index.php/Category:Wiki Return to Wiki Index]'''''

	== ~~CHOOSE PARTITION~~ ==		== Choose Partition ==

			=== TMSH Mode ===

	Enter tmsh and choose partition :		Enter tmsh and choose partition :
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	cd /<PARTITION_NAME></nowiki>		cd /<PARTITION_NAME></nowiki>

	== ~~SHOW~~ VS ~~CONFIG~~ ==		=== Linux Mode ===

			List the partitions with the command :

			<nowiki>
			tmsh -q -c 'cd /; list net route-domain recursive all'</nowiki>

			Note the partition ID you need, then :

			<nowiki>
			rdsh <PARTITION_ID></nowiki>


			== Show VS Config ==

	<nowiki>		<nowiki>
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	}</nowiki>		}</nowiki>

	== ~~SHOW POOL CONFIG~~ ==		== Show Pool Config ==

	Show Configuration :		Show Configuration :
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	}</nowiki>		}</nowiki>

	== ~~SHOW POOL STATISTICS~~ ==		== Show Pool Statistics ==

	<nowiki>		<nowiki>
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	== ~~SHOW~~ SSL ~~PROFILES~~ ==		== Show SSL Profiles ==

	<nowiki>		<nowiki>
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	== ~~SHOW~~ VS ~~CONNECTIONS~~ ==		== Show VS Connections ==

	<nowiki>		<nowiki>
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	* '''ss-server-port''': The (server) destination port on the serverside of the connection (i.e., the Pool Member port).		* '''ss-server-port''': The (server) destination port on the serverside of the connection (i.e., the Pool Member port).

	== ~~SHOW~~ VS ~~LOGS~~ ==		== Show VS Logs ==

	<nowiki>		<nowiki>
Line 109:		Line 124:
	The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.		The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.

	== ~~SHOW~~ VS ~~STATISTICS~~ ==		== Show VS Statistics ==

	<nowiki>		<nowiki>
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	Last 5 Minutes 0</nowiki>		Last 5 Minutes 0</nowiki>

	== ~~USEFUL LINKS~~ ==		== Dump VS Traffic ==

			Be sure to be in the good partition, and use the tcpdump command.
			Eg :

			<nowiki>
			tcpdump -nni any src or dst 1.2.3.4 and src or dst 5.6.7.8
			</nowiki>

			The backend servers ip/port can be tested with the telnet command.


			== Usefull Links ==

	* [F5 BIG-IP LTM Command Line Interface (CLI) Guide](https://my.f5.com/manage/s/article/K40033505)		* [F5 BIG-IP LTM Command Line Interface (CLI) Guide](https://my.f5.com/manage/s/article/K40033505)

Admin: /* Filters & Descriptions */

2026-02-18T10:22:21Z

Filters & Descriptions

← Older revision		Revision as of 10:22, 18 February 2026
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	=== Filters & Descriptions ===		=== Filters & Descriptions ===

	*cs-client-addr		* '''cs-client-addr''': The (client) source IP address on the clientside of the connection. Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.
	**The (client) source IP address on the clientside of the connection. Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.		* '''cs-client-port''': The (client) source port on the clientside of the connection.
	*cs-client-port		* '''cs-server-addr''': The (server) destination IP address on the clientside of the connection (i.e. the Virtual Server IP address). Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.
	** The (client) source port on the clientside of the connection		* '''cs-server-port''': The (server) destination port on the clientside of the connection (i.e. the Virtual Server port).
	*cs-server-addr		* '''ss-client-addr''': The (client) source IP address on the serverside of the connection (i.e. the SNAT address).
	** The (server) destination IP address on the clientside of the connection (i.e. the Virtual Server IP address). Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.		* '''ss-client-port''': The (client) source port on the serverside of the connection (i.e. the SNAT port).
	*cs-server-port		* '''ss-server-addr''': The (server) destination IP address on the serverside of the connection (i.e., the Pool Member address).
	** The (server) destination port on the clientside of the connection (i.e. the Virtual Server port)		* '''ss-server-port''': The (server) destination port on the serverside of the connection (i.e., the Pool Member port).
	*ss-client-addr
	**The (client) source IP address on the serverside of the connection (i.e. the SNAT address)
	*ss-client-port
	**The (client) source port on the serverside of the connection (i.e. the SNAT port)
	*ss-server-addr
	**The (server) destination IP address on the serverside of the connection (i.e., the Pool Member address)
	*ss-server-port
	** The (server) destination port on the serverside of the connection (i.e., the Pool Member port)

	== SHOW VS LOGS ==		== SHOW VS LOGS ==

Admin: /* USEFUL LINKS */

2026-02-18T10:21:02Z

USEFUL LINKS

← Older revision		Revision as of 10:21, 18 February 2026
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	* [F5 BIG-IP LTM Command Line Interface (CLI) Guide](https://my.f5.com/manage/s/article/K40033505)		* [F5 BIG-IP LTM Command Line Interface (CLI) Guide](https://my.f5.com/manage/s/article/K40033505)
	~~- This guide provides an overview of F5 BIG-IP LTM CLI commands and their usage, ideal for network administrators working with F5 load balancers.~~

	* [F5 BIG-IP LTM Troubleshooting and Logs](https://my.f5.com/manage/s/article/K53851362)		* [F5 BIG-IP LTM Troubleshooting and Logs](https://my.f5.com/manage/s/article/K53851362)
	~~- A detailed article covering various troubleshooting techniques for F5 BIG-IP LTM, including analyzing logs, inspecting performance statistics, and diagnosing issues.~~

	* [F5 BIG-IP LTM Configuration Examples](https://my.f5.com/manage/s/article/K28245234)		* [F5 BIG-IP LTM Configuration Examples](https://my.f5.com/manage/s/article/K28245234)
	~~- A collection of useful configuration examples for F5 BIG-IP LTM. This includes virtual server, pool, SSL, and other common configuration scenarios.~~

	* [F5 BIG-IP iRule Documentation](https://support.f5.com/csp/article/K19240)		* [F5 BIG-IP iRule Documentation](https://support.f5.com/csp/article/K19240)
	~~- Documentation on iRules for customizing traffic handling, load balancing, SSL offloading, and other network-level operations in F5 BIG-IP LTM.~~

	* [F5 Knowledge Base](https://support.f5.com/csp/)		* [F5 Knowledge Base](https://support.f5.com/csp/)
	~~- The official F5 Knowledge Base for accessing articles, troubleshooting tips, and frequently asked questions (FAQs) related to F5 BIG-IP products.~~

	* [F5 BIG-IP System Performance Monitoring](https://techdocs.f5.com/t/d/s/article/K85011825)		* [F5 BIG-IP System Performance Monitoring](https://techdocs.f5.com/t/d/s/article/K85011825)
	~~- Information on how to monitor the performance of your F5 BIG-IP LTM system, including system stats, metrics, and performance tuning guidelines.~~

	* [F5 SSL Offloading Configuration](https://techdocs.f5.com/t/d/s/article/K15153940)		* [F5 SSL Offloading Configuration](https://techdocs.f5.com/t/d/s/article/K15153940)
	~~- Step-by-step guide for SSL offloading using F5 BIG-IP LTM, which helps optimize the decryption of HTTPS traffic.~~

	* [F5 iHealth](https://ihealth.f5.com/)		* [F5 iHealth](https://ihealth.f5.com/)
	~~- A diagnostic tool for F5 BIG-IP LTM devices to perform system health checks, collect logs, and get recommendations for system optimization.~~

	* [F5 BIG-IP SSL Certificate Management](https://techdocs.f5.com/t/d/s/article/K11841)		* [F5 BIG-IP SSL Certificate Management](https://techdocs.f5.com/t/d/s/article/K11841)
	~~- This article provides information on managing SSL certificates for F5 BIG-IP LTM, including importing, configuring, and troubleshooting SSL certificates.~~

	* [F5 DevCentral Community](https://community.f5.com/)		* [F5 DevCentral Community](https://community.f5.com/)
	~~- F5 DevCentral is an active online community for F5 professionals, offering forums, discussions, and resources about F5 BIG-IP LTM configuration, troubleshooting, and best practices.~~

	* [F5 BIG-IP High Availability and Failover Configuration](https://support.f5.com/csp/article/K11897)		* [F5 BIG-IP High Availability and Failover Configuration](https://support.f5.com/csp/article/K11897)
	~~- An essential guide on setting up high availability and failover between F5 devices, ensuring reliability and continuous service availability.~~

	* [F5 BIG-IP Latest Release Notes](https://support.f5.com/csp/article/K13008)		* [F5 BIG-IP Latest Release Notes](https://support.f5.com/csp/article/K13008)
	~~- The release notes for F5 BIG-IP LTM provide important information about new features, bug fixes, and changes in each software version.~~

	* [F5 BIG-IP iRule Examples and Best Practices](https://devcentral.f5.com/s/articles/best-practices-for-irules-13372)		* [F5 BIG-IP iRule Examples and Best Practices](https://devcentral.f5.com/s/articles/best-practices-for-irules-13372)
	~~- A helpful resource with practical iRule examples and best practices to efficiently handle traffic manipulation and load balancing on F5 devices.~~

	----		----

	'''''[https://it-arts.net/index.php/Category:Wiki Return to Wiki Index]'''''		'''''[https://it-arts.net/index.php/Category:Wiki Return to Wiki Index]'''''

Admin: /* SHOW VS STATISTICS */

2026-02-18T10:20:17Z

SHOW VS STATISTICS

← Older revision		Revision as of 10:20, 18 February 2026
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	Last 5 Seconds 0		Last 5 Seconds 0
	Last 1 Minute 0		Last 1 Minute 0
	Last 5 Minutes 0		Last 5 Minutes 0</nowiki>



	== USEFUL LINKS ==		== USEFUL LINKS ==

Admin: /* SHOW VS LOGS */

2026-02-18T10:20:00Z

SHOW VS LOGS

← Older revision		Revision as of 10:20, 18 February 2026
Line 113:		Line 113:

	<nowiki>		<nowiki>
	tail /var/log/ltm \| grep <VS_NAME><nowiki>		tail /var/log/ltm \| grep <VS_NAME></nowiki>

	The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.		The /var/log/ltm will show the time according to the Time Zone configured while the tmsh show sys log ltm will show the UTC time.



	== SHOW VS STATISTICS ==		== SHOW VS STATISTICS ==

Admin: /* Filters & Description */

2026-02-18T10:19:39Z

Filters & Description

← Older revision		Revision as of 10:19, 18 February 2026
Line 91:		Line 91:
	cs-client-addr cs-server-addr ss-client-addr ss-server-addr</nowiki>		cs-client-addr cs-server-addr ss-client-addr ss-server-addr</nowiki>

	=== Filters & ~~Description~~ ===		=== Filters & Descriptions ===

	*cs-client-addr		*cs-client-addr

Admin: /* SHOW VS CONNECTIONS */

2026-02-18T10:19:25Z

SHOW VS CONNECTIONS

← Older revision		Revision as of 10:19, 18 February 2026
Line 91:		Line 91:
	cs-client-addr cs-server-addr ss-client-addr ss-server-addr</nowiki>		cs-client-addr cs-server-addr ss-client-addr ss-server-addr</nowiki>

	~~# Filter #~~ Description		=== Filters & Description ===

	*cs-client-addr		*cs-client-addr
	**The (client) source IP address on the clientside of the connection. Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.		**The (client) source IP address on the clientside of the connection. Subnets are allowed by specifying an optional prefix length up to /24 and /56 for IPv4 and IPv6 respectively.
Line 108:		Line 109:
	*ss-server-port		*ss-server-port
	** The (server) destination port on the serverside of the connection (i.e., the Pool Member port)		** The (server) destination port on the serverside of the connection (i.e., the Pool Member port)



	== SHOW VS LOGS ==		== SHOW VS LOGS ==