Bug ID 981485: Neurond enters a restart loop after FPGA update.

Last Modified: Jan 14, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 16.0.0, 16.0.0.1, 16.0.1

Opened: Jan 12, 2021
Severity: 3-Major

Symptoms

After FPGA firmware upgrade, the neurond process might enter a restart loop, unable to recover. When the problem is present you might see logs similar to: -- notice chmand[6674]: 012a0005:5: FPGA PNP FW upgrade check: req type 0, file:Latest -- notice chmand[6674]: 012a0005:5: FPGA: Requesting type: 0, vers: Latest -- notice chmand[6674]: 012a0005:5: FPGA: current type: 2, vers: hsb_5SGXEA7H2F35C2_t37dc_1d10_v5.23.5.0_d20.06.11.00.bit -- notice chmand[6674]: 012a0005:5: FPGA: match for type: 0, vers: hsb_5SGXEA7H2F35C2_t37dc_1d10_v5.6.7.0_d20.06.11.00.bit -- notice chmand[6674]: 012a0005:5: removed /var/db/mcpdb.* FPGA current disk firmware updated to: /L7L4_BALANCED_FPGA type: 0 -- notice chmand-fpga-pnp[17551]: Stopping TMM, BCM56xxd, and neurond -- notice logger[17553]: /bin/bash /etc/init.d/fw_pnp_upgrade upgrade restart ==> /usr/bin/bigstart stop tmm bcm56xxd neurond

Impact

Enhanced flow acceleration provided by the Neuron chip cannot be utilized.

Conditions

FPGA firmware mismatch, leading to FPGA firmware upgrade.

Workaround

Perform a full system restart.

Fix Information

None

Behavior Change