International Business Machines Corporation

Daniel Dean Heimsoth

Karthick Rajamani

Charles Robert Lefurgy

Malcolm Scott Allen-Ware

Guillermo Jesus Silva

Gary Randall Horn

Mohan B Sharma

Leo Yue Yeung

Amos A Omokpo

Laurie Beth Turner

Joshua Ian Harriman

Rohith Ravindra

Edward Joel Rovner

John Kevin Frick

Mark John Baugher

Gary T Hunt

Gregory L Morris

Isabel Berdeen Van Horn

Everett Arthur McCassey, Ii

Jon Michael Houghton

Chun-tang Milton Li

Brent T Hoegh

Everett Arthur Mccassey

Chun-Tang Milton Li

Gregory Lynn Morris

Technology for computing number of active servers needed over time in a cloud/compute cluster includes the following operations (not necessarily in the following order): (i) determining the capacity of each VCE provisioned on the cloud against the resource guaranteed to that VCE; (ii) forecasting the resource needs over time using historical requests for each VCE flavor; and (iii) using the forecasted resource needs to determine the required number of future servers at some future time. Some embodiments of the present invention use a formula that accounts for the interplay among various parameter values of the VCE flavors and also the mapping of the needs of VCEs of various flavors to the capabilities of physical resources.

Cloud data center with reduced energy consumption

A data communication network includes a network client, a network server, and a name caching entity located between the network client and the network server. The network server is coupled to the data communication network by a plurality of network adapters that each have a different network (e.g., Media Access Control (MAC)) address, but share a common logical name. The name caching entity includes a name cache, which stores the common logical name shared by the server's network adapters in association with the network address of one of the network adapters. By reference to the name cache, the name caching entity is able to convert broadcast frames to unicast frames, thereby advantageously reducing broadcast frames in the network. The name caching entity will disassociate the logical name and the network address in the name cache in response to a failure to detect a frame indicating the establishment of a session with the network server within a selected interval of transmission of a frame requesting establishment of a session with the network server. In this manner, the network client can establish a session with the network server through another network adapter in cases in which the network adapter whose network address is stored in the name cache cannot support an additional session.

Method and system for broadcast management in a data communication network that permits namesharing

An object oriented representation for sending network protocol requests between a first and a second process in a computer network. In an object oriented implementation of a protocol stack a network definition object is used for defining an interface to a communication endpoint for a client application and a network address object for defining the communication endpoint. The protocol stack is formed by layers of instances of a protocol interface class object for defining protocol interface for a protocol layer in the protocol stack and a protocol layer class object for defining the protocol layers in the stack. The network protocol requests are sent in an instance of one of a set of network operation classes each of which correspond to a method in the protocol interface class. The client requests are wrapped in the network operation object which contains all the necessary information so the request can be presented to the appropriate protocol layer object in the protocol stack.

Object oriented representation of network requests in a client server

An object oriented protocol interface for establishing a communication path between communication endpoints in a computer network. The generic nature of the interface allows any and several protocol layers to be developed from the same set of protocol class objects. The interface to a communication endpoint for a client application is defined by instantiating a network definition object for the communication endpoint from a network definition class object. The communication endpoint itself is represented by instantiating a network address object from a network address class object. The protocol layers which form the protocol stack are derived from a set of protocol interface objects from a protocol interface class object and a set of protocol layer objects from a protocol layer class object. The objects forming each of the layers in the protocol stack differ in their capabilities according to their respective layer and the protocol which is provided by the protocol stack. The communication path is established in the protocol stack by calling methods in the sets of protocol interface and protocol layer objects.

Object-oriented communication interface for network protocol access

A session-oriented local area network (LAN) application and an ISO 8802-2 protocol driver code will cooperate in a new form of connectionless, session-oriented communication called Sideband. At each session start-up time, the LAN Application will communicate with the enhanced ISO 8802-2 based protocol driver on the local system and the LAN Application and the 8802-2 based protocol driver on the remote system to determine if they all support the Sideband. If Sideband is fully supported by both systems, Sideband will be activated for the session. To communicate on a session which has Sideband active, the LAN Application requests that data is to be sent using the Sideband. A check is performed to see if the data meets Sideband criteria. As Sideband is a connectionless medium, the additional code path needed to set up and track timers and to handle the resend attempts are saved in the protocol. If the LAN Application code is session-oriented, it will keep track of a timer which will cause the data to be resent along a non-Sideband path if a response is not received within a designated amount of time. Header information is stored and reused to increase the throughput and decrease the response time for the transmission of small network packets. In case the network at some points becomes unreliable, procedures are used to track the reliability of the network and to enable and disable Sideband in accordance with the reliability of the network.

System for sending messages in a session using a mixture of protocols

A method, system and process for allowing identical server names on a computer system to be shared between multiple LAN adapters. A processor, under the control of the process, prompts a user for entry of a new adapter name. The adapter name is used to build a name query which is transmitted to a local area network (LAN) to determine if the adapter name is already in use by the same computer. If the adapter name is in use by the same computer, then the new adapter is linked to the existing adapter with the same name. However, if no response is received after an appropriate number of retry attempts, then the name is added to the local table of LAN adapter names. When the computer receives traffic addressed to a shared name, the process ensures that only one adapter at a time responds. The responsibility for responding to this traffic is transferred to all adapters sharing this name. This technique results in distribution of workload across multiple adapters and a resultant increase in throughput realized by spreading the load of LAN requests across multiple LAN adapters.

System for sharing name among network adapters by, dynamically linking

A system and method is provided to compliment use of priority for reserved traffic in multimedia computerized data communication networks, to insure that the opportunity for transmitting large, unreserved data frames is constrained. If frames transmitted when the server releases a token tend to be small, then the server will capture a larger portion of the bandwidth. Thus, a short bandwidth reservation acknowledgement is transmitted onto the ring by the client for selected frames which it receives. This is not addressed to any station on the ring. Rather it is simply transmitted at a non-zero priority less than the server's priority. The criteria which is employed by the client for such acknowledgement is that the sender will send a bandwidth reservation acknowledgement only when the IEEE 802.5 AC field is set, but will do so for a fixed amount of time or for a fixed number of received frames. This criteria provides an optimization reducing overall ring utilization, since the bandwidth reservation acknowledgement is only sent when the ring is congested. A communication network is disclosed which transmits an unsolicited acknowledgement at non-zero priority for each non-zero priority frame received, such system thereby being independent of the communication protocol employed by the network station.

System and method for bandwidth reservation for multimedia traffic in

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Cary, NC, United States of America

Daniel Dean Heimsoth