International Business Machines Corporation

Benjamin Thomas Rau

Bruce H Ratcliff

Jerry Wayne Stevens

Jeffrey Douglas Haggar

Grant Mericle

David Anthony Herr

Christopher Meyer

Michael Jon Fox

Richard Roberts

Dwight E Allen, Jr

Kaleb Joshua Holley

Scott D Malzahn

An example operation may include one or more of receiving a data packet from a network controller, where the data packet is marked as valid based on a checksum calculated by the network controller, determining that the checksum generated by the network controller is in error based on a recalculation of the checksum of the data packet via a network layer, and transmitting the data packet from the network layer to the network controller with a notification that the checksum is in error.

Packet replay in response to checksum error

Examples described herein provide a computer-implemented method that includes registering at least one of a plurality of virtual internet protocol addresses (VIPAs) to each of a plurality of network adapters. The method further includes distributing, by each of the plurality of network adapters, inbound data among each of the plurality of network adapters using an address resolution protocol.

Dynamically balancing inbound traffic in a multi-network interface-enabled processing system

A computer-implemented method for ranking and presenting actions executed by prior users when an error scenario occurs in a computer system is provided. The computer-implemented method includes identifying an error with the computer system and entering an error state with respect to the error. The computer-implemented method includes recording operations within the computer system during the error state and exiting the error state based on an exit condition.

Automatically solving computer system error states via a comparative historical analysis of error states, logs, profile configurations, and operator responses

Facilitating communications within a processing environment. Inbound traffic and outbound traffic on one or more virtual interfaces of the processing environment are monitored for a predefined amount of time. Based on the monitoring, a determination is made as to whether for a selected component of a virtual interface of the one or more virtual interfaces an inbound frame has been received but an outbound frame has not been transmitted for the predetermined amount of time. Based on determining that the inbound frame has been received but the outbound frame has not been transmitted, a generated outbound frame is forwarded to cause address registration information for the virtual interface to be refreshed.

Selectively refreshing address registration information

A method, system, and program product for allocating a port for a connection by an application instance on a computer system is provided. The application instances used the port and a shared network address to connect to one or more application instances accessing the shared network address. A distributing stack creates at least one common table of available ports. Each table is associated with a different unique shared network address. When a request is received for a port to assign the shared network address, the distributing stack allocates a set of available ports. When a termination message is received, the distributing stack updates the common table of available ports associated with the shared network address. When a transfer from the distributing stack to a backup distributing stack is made, ownership of the common table of available ports is transferred to the backup distributing stack.

Sysplexport allocation across a z/OS sysplex

According to some embodiments, a computer-implemented method for packet forwarding optimization across multiple nodes may include receiving, via a processor on a network controller, a first packet from a client. The first packet can include information indicative of a target node and a protocol type. The method may further include receiving, via the processor, a balancing node from a packet engine, forwarding, via the processor, the first packet to the target node though the balancing node according to a balancing node address, a target node address, and the protocol type, receiving, via the processor, a registration from the packet engine, and saving the registration to a network controller queue, and forwarding, via the network controller queue, a second packet to the target node based on the registration without the second packet traversing the balancing node.

Growing community of inventors

Raleigh, NC, United States of America

Benjamin Thomas Rau