Method and system for reliably defining and determining timeout values in unreliable datagrams

A method for efficient management of message transmission on a SAN, said method comprising the steps of:

• determining a one way timeout value at a receiving port corresponding to a maximum time for a packet of a message to reach said receiving port from a sending port on said SAN network, wherein each packet of said message is transmitted from said sending port within a time frame that is less than a Response Time of said receiving port;
• receiving a first packet of a message being transmitted on said SAN;
• allocating resources of said receiving port to receive additional packets of said message;
• and
• in response to an elapse of a time equal to said one way timeout value before receiving at least one of said additional packets, de-allocating said network resources of said port.

A network comprising:

• a receiving port and a sending port;
• a connecting medium between said receiving port and said sending port;
• and
• logic housed within said receiving port for allocating and deallocating network resources based on a pre-selected subnet timeout value.

A computer program product comprising:

• a computer readable medium:
• and
• program instructions on said computer readable medium for:
• discovering routing delay times for at least one network route from a first end node to a second end node of a network;
• storing a longest one of said routing delay times at said first end node as a subnet timeout value;
• discovering a processing time for responding to operations at said second end node;
• calculating a completion time for a request sent from said first end node to said second end node utilizing said subnet timeout value and said processing time;
• and
• managing an allocation of resources of said network utilizing said completion time.

A computer program product comprising:

• a computer readable medium;
• and
• program instructions on said computer readable medium for:
• determining a one way timeout value at a receiving port corresponding to a maximum time for a packet of a message to reach said receiving port from a sending port on a network;
• receiving a first packet of a message being transmitted on said network;
• allocating resources of said receiving port to receive additional packets of said message;
• and
• in response to an elapse of a time equal to said one way timeout value before receiving at least one of said additional packets, removing said allocation of network resources to said message.