Bug ID 571622: 'Exceeding pool member limit' error with FQDN pool members and non-LTM license

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP AFM, APM, ASM(all modules)

Known Affected Versions:
11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.1, 12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Opened: Feb 03, 2016

Severity: 4-Minor


When configuring FQDN pool members on a BIG-IP system with a license that does not include the LTM module, an error similar to the following may be logged by mcpd: 01071732:3: Exceeding pool member limit (3). Cannot add pool member to pool:(/Common/pool_name).


Under these conditions, the ephemeral FQDN pool members are counted against the pool member limit (ltm_lb_pool_member_limit) defined in the LTM license. Cannot configure FQDN pool members with autopopulate enabled on BIG-IP systems without an LTM license.


This may occur if: 1. The active BIG-IP license does not include the LTM module. Specifically, the active license defines a pool member limit (ltm_lb_pool_member_limit) other than 'unlimited'. This applies to AFM, APM, and ASM licenses. 2. FQDN pool members are configured with 'autopopulate' set to 'enabled'.


There are two workarounds for this issue: Workaround 1 ----------- 1. Configure FQDN pool members with autopopulate disabled. 2. Do not attempt to configure more pool members than are permitted by the active license. Workaround 2 ----------- Add the LTM module to the license configuration.

Fix Information


Behavior Change

Guides & references

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