Bug ID 1472817: Blade disconnects from BIG-IP clusters during high traffic flow.

Last Modified: Sep 03, 2024

Affected Product(s):
BIG-IP F5OS-C(all modules)

Fixed In:
17.1.1.2

Opened: Jan 02, 2024

Severity: 2-Critical

Symptoms

When the traffic is high, an overloaded blade can disconnect from the BIG-IP cluster due to dropped internal heartbeat packets.

Impact

Blades can disconnect from the BIG-IP cluster.

Conditions

Issue can be triggered when there is high and sustained traffic loads.

Workaround

Decrease the traffic level until the blade rejoins the cluster.

Fix Information

Priority of CDP packets are increased, so that they use high priority queues and are protected against being dropped when the front panel traffic load is high. Also optimized the algorithm that determines cross-blade disaggregation state to improve recovery when a blade drops out and rejoins a cluster.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips