Cound I change IPMP probing rate under solaris 10 u2 ?

Hey, gurus!
I have one question about IPMP. Because there are so many SPARC servers in the same LAN, So many ICMP packages were produced. But I want to reduce ICMP probe rate less than 2 seconds. In other word, I want to reduce ICMP network traffic over my LAN.
Appreciated for your help.
:)

The FAILURE_DETECTION_TIME in /etc/default/mpathd might be of interest, see:
man in.mpathd
.7/M.

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