Bug ID 1137269: MCPD fails to reply if a request is proxied to another daemon and the connection to that daemon closes

Last Modified: Jan 20, 2023

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,

Opened: Aug 17, 2022
Severity: 3-Major


MCPD does not reply to the request if the publisher's connection closes or fails. In this case, when bcm56xxd is restarted, the perceivable signs of failure are: - The snmpwalk failing with a timeout and - The "MCPD query response exceeding" log messages.


SNMP stopped responding to queries after upgrade.


1) Configure SNMP on the BIG-IP to run snmpwalk locally on the BIG-IP. 2) From the first session on the BIG-IP, run a snmpwalk in the while loop. while true;do date; snmpwalk -v2c -c public sysDot1dbaseStat;sleep 2;done Sample output: Sat Aug 21 00:57:23 PDT 2021 F5-BIGIP-SYSTEM-MIB::sysDot1dbaseStatResetStats.0 = INTEGER: 0 F5-BIGIP-SYSTEM-MIB::sysDot1dbaseStatMacAddr.0 = STRING: 0:23:e9:e3:8b:41 F5-BIGIP-SYSTEM-MIB::sysDot1dbaseStatNumPorts.0 = INTEGER: 12 F5-BIGIP-SYSTEM-MIB::sysDot1dbaseStatType.0 = INTEGER: transparentonly(2) 3) From a second session on the BIG-IP restart bcm56xxd bigstart restart bcm56xxd 4) The snmpwalk will continually report the following: Timeout: No Response from And snmpd will continually log "MCPD query response exceeding" every 30 seconds in /var/log/ltm.


Restart SNMP.

Fix Information


Behavior Change