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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...
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kridsana's avatar
kridsana
Icon for Cirrocumulus rankCirrocumulus
Jan 17, 2013
i am confused. on page 1, you mention you cannot ping virtual server with mtu 1500. if you ping virtual server, how come does bigip receive icmp unreachable/fragmentation needed??

 

sorry I mistook this ,after F5 reassemble TCP , it send packet 1500 to client but checkpoint drop it and return ICMP fragmentation needed to F5 with MTU next hop 1476. maybe i focus only ping that customer test show too much.