What are 3 key elements of iRule?

What are 3 key elements of iRule?

Basic iRule elements¶

• Event declarations.
• Operators.
• iRule commands.

How do you make iRules?

How to create the iRule

1. On the Main tab, click Local Traffic > iRules.
2. Click Create.
3. In the Name field, type a name, such as my_irule. The full pathname of the iRule cannot exceed 255 characters.
4. Click Finished.

What is iRules in load balancer?

An iRule basically is a script that executes against network traffic passing through an F5 appliance. iRules can route, re-route, redirect, inspect, modify, delay, discard or reject, log or … do just about anything else with network traffic passing through a BIG-IP.

What language are iRules written?

Tool Command Language (Tcl)
The syntax that you use to write iRules is based on the Tool Command Language (Tcl) programming standard. Thus, you can use many of the standard Tcl commands, plus a robust set of extensions that Local Traffic Manager provides to help you further increase load balancing efficiency.

What is the function of iRule?

An iRule is a powerful and flexible feature of BIG-IP devices based on F5’s exclusive TMOS architecture. iRules provide you with unprecedented control to directly manipulate and manage any IP application traffic.

What is F5 GTM used for?

F5® BIG-IP® Global Traffic Manager™ (GTM) distributes DNS and user application requests based on business policies, data center and cloud service conditions, user location, and application performance.

What is big-IP iRule?

An iRule is a powerful and flexible feature within the BIG-IP® local traffic management (LTM) system that you can use to manage your network traffic.

What is the importance of TCL language explain with syntax?

Tcl is a general purpose multi-paradigm system programming language. It is a scripting language that aims at providing the ability for applications to communicate with each other. On the other hand, Tk is a cross platform widget toolkit used for building GUI in many languages.

Which programming language is the basis for F5 iRules?

Based on Tcl, iRules is the F5 data plane scripting language that enables a broad range of functionality to be programmatically inserted into the network.

How are irules used in the BIG IP system?

The BIG-IP ® system includes an iRule command called class, with a match option, which you can use to select a pool based on whether the command being used in the iRule represents a member of a specific data group. When you use the class command, the BIG-IP system knows that the string following the identifier is the name of a data group.

What is an iRule in BIG-IP local traffic manager?

An iRule is a powerful and flexible feature within BIG-IP ® Local Traffic Manager™ that you can use to manage your network traffic.

Do you need iRule for BIG-IP from ver11?

“Country is $country” BIG-IP from Ver11 can use websockets like https. so you don’t need iRule. For BIG-IP versions later than 11.4.0, you can use a single virtual server with an HTTP profile. For BIG-IP versions earlier than 11.4.0, consider using a separate virtual server with the applicable profile for each protocol.

What kind of syntax do you use for irules?

The syntax that you use to write iRules is based on the Tool Command Language (Tcl) programming standard. Thus, you can use many of the standard Tcl commands, plus a robust set of extensions that Local Traffic Manager provides to help you further increase load balancing efficiency.

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