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MTU & Fragmentation

pramod
Level 1
Level 1

‎08-28-2010 05:15 AM

I have formed an ipsec tunnel between cisco pix ver 7.0 and fortigate firewall. both firewall connects internet via DSL link.The applications running behind the pix firewall is above 1500 bytes, the pix physical interface is set to 1500 bytes.tunnel is fine but i cant send packets above 1419 bytes via tunnel,how to fix this issue,experts help pls

Regards,

CDSPL

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15 Replies 15

Atri Basu
Cisco Employee
Cisco Employee
In response to pramod

‎08-31-2010 12:57 AM

Please change the configuration on the inside interface to clear the DF bit instead of copying it and try it.

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