Forum Discussion

kridsana's avatar
kridsana
Icon for Cirrocumulus rankCirrocumulus
Dec 26, 2012

How to clear Don't Fragment (DF) bit

there is some virtual server that have a problem that     packet segment lost when MTU = 1500     so i want to clear DF bit to fix this problem , and how to clear it?     than...
config
design
What_Lies_Bene1's avatar
What_Lies_Bene1
Icon for Cirrostratus rankCirrostratus
Dec 27, 2012
The adverse effects are what you are seeing, packets being dropped as they can't be fragmented. PMTU most likely doesn't work through most networks these days because of firewalls and other security measures so I wouldn't be too concerned about turning it off, however, I don't believe it will help either.