On Friday 26 December 2008 02:07:56 am Chu Li wrote: I think it was assumed that an admin that is setting this up will read both man pages since both ends need some adjustments. This is a message being passed back and forth so that each end knows the other is still alive. If one end segfaults, for example, it won't send a tcp close and the connection can linger for a while. This lets each end decide that the other is not working properly and then take admin selected actions. Then it will perform the heart beat protocol with the max idle seconds being the deciding factor. I can add some explanation to the man pages. -Steve