TCP timeout on HPUX11 sometime

[Romeo_Lou]

Dear,
There are two HPUX in server room, but one of HPUX (Server B)encounter TCP time out sometime when user ping from OA network segment, but ping from OA seg to another server(server A) is ok.
And ping from server A to server B is ok too.
Ps server A and B within the same seg different with OA seg.
Does there any parameter to fix this issue on HPUX?
or any suggestion?
Tks
detail ping report ,pls ref attached file