Virtual servers Status using iRules

The BIG-IP system may not reflect the expected status for virtual servers that use iRules, HTTP classes or local traffic policies to select a pool:

The status of a virtual server using iRules that reference pools is derived as follows:

• The status of the default pool and each pool referenced within an iRule is considered when determining the status of the virtual server.
• When multiple pools are referenced from within a single iRule, the highest precedence status reflected by any pool is reflected as the virtual server's status. In order of precedence, the possible statuses are: Available, Offline, and Unknown.

These conditions result in the following virtual server status matrix:

Pool referenced by iRule	no default pool	default pool Available	default pool Offline	default pool Unknown
None	Unknown	Available	Offline	Unknown
Only Unknown pools	Unknown	Available	Offline	Unknown
Only Offline pools	Offline	Available	Offline	Offline
Only Available pools	Available	Available	Available	Available
Available and Unknown pools	Available	Available	Available	Available
Available and Offline pools	Available	Available	Available	Available
Unknown and Offline pools	Offline	Available	Offline	Offline
Available , Unknown, and Offline pools	Available	Available	Available	Available
Available , Unknown, and Offline pools referenced in separate iRules	Available	Available	Available	Available