I'm having some issues with VPN performance between two SRX's , how to check for fragmented packets ? Is there any command in SRX?
There is a VTY command for checking the Fragmentation :
FLOWD_OCTEON( vty)# show usp frag stats
For VPN traffic the fragmentation will happen before ESP encapsulation and these encrypted and fragmented IP packets (one with ESP header and the other without ESP header) will be transmitted .