Last Modified: Apr 10, 2019
Affected Product:
See more info
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4
Fixed In:
11.5.4 HF3
Opened: Apr 19, 2016
Severity: 4-Minor
LTM re-transmits TCP segments even when ICMP Path maximum transmission unit (PMTU) is higher than existing MTU.
Burst traffic generated.
ICMP PMTU is higher than existing MTU. User enables MPTCP, Rate Pacing, or any of the following congestion controls: Vegas, Illinois, Woodside, CHD, CHG
Disable Path MTU Discovery by entering the command: tmsh modify sys db tm.enforcepathmtu value disable.
Fixed unnecessary re-transmission of packets on higher ICMP Path maximum transmission unit (PMTU) in the advanced TCP implementation.