Last Modified: Dec 07, 2023
Affected Product(s):
BIG-IP LTM
Opened: Jul 31, 2020 Severity: 3-Major
When BIG-IP is configured with a large number of in-TMM monitors, the Nodes or Pool Members may not be marked DOWN immediately after the configured timeout period once the target stops responding to pings.
Nodes or Pool Members which are not responsive may not be marked DOWN in a timely fashion.
This may occur when: -- In-TMM monitoring is enabled (via sys db bigd.tmm) -- A large number of Nodes and/or Pool Members (several hundreds or thousands) are configured and monitored.
You can work around this issue by disabling in-TMM monitoring, at the expense of decreased monitoring performance (higher CPU usage by the bigd daemon).
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