Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Fixed In:
13.1.0
Opened: Mar 01, 2017 Severity: 2-Critical Related Article:
K29101604
TMM uses a smaller MTU when connecting to a device via a configured route.
Effective MTU when using the route will be limited to 1500 bytes. This includes derived MSS in TCP connections.
- Larger than 1500 bytes MTU configured on VLAN. - Static, or dynamically learned route, to a destination, with no specific MTU defined.
Specify the required MTU on routes.
TMM now by default uses VLAN-configured MTU when using a route to a destination.