Bug ID 507240: ICMP traffic cannot be disaggregated based on IP addresses

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2

Fixed In:
13.0.0, 12.1.3

Opened: Feb 14, 2015

Severity: 3-Major

Related Article: K13811263

Symptoms

ICMP traffic might not be disaggregated evenly if there is not enough entropy from the ICMP header.

Impact

Traffic imbalance.

Conditions

-- ICMP traffic has low entropy in ICMP header. -- System is configured to disaggregate traffic.

Workaround

None.

Fix Information

This release supports disaggregation of ICMP traffic based on IP addresses, in addition to ICMP headers. To enable the feature, use the following commands: In v13.x: tmsh modify net dag-globals icmp-hash ipicmp In v12.x: tmsh modify sys db dag.icmp_hash value ipicmp Note: This feature cannot be used if the BIG-IP system translates IP addresses for ICMP traffic.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips