Bug ID 929897: An snmpbulk get request may get an error return

Last Modified: Apr 17, 2024

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
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, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2

Opened: Jul 22, 2020

Severity: 3-Major

Symptoms

The snmp get bulk operation can be given two parameters controlling non-repeaters and max-repetitions. The snmp agent may change the requested max-repetitions to some lower value if the response cannot be expected to fit into the maxMsgSize for an snmpv3 connection. The calculation is done based on an expected variable binding response size but the size may be too small such that the lowered value is still not small enough.

Impact

The get bulk response will be an error rather than a smaller response.

Conditions

An snmp get bulk request whose max-repetition value does not fit into the client's maxMsgSize for the connection.

Workaround

Lower the max-repetitions value in the get bulk request.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips