Hewlett Packard Enterprise Development LP

Hewlett-packard Development Company, L.p.

Opal Acquisition Corporation

Siamack Ayandeh

Barry A Maskas

Shilin Zhang

A network edge routing device determines a mapping between network frame flows and classes of service that minimizes network frame flow disruption during class-based network frame flow control initiated outside a network of the network edge routing device. The network edge routing device transmits the mapping to a network interior device within the network that generates the network frame flows. The network edge routing device receives the network frame flows from the network interior device from inside the network, and routes the network frame flows to outside the network.

Mapping network frame flows to classes of service to minimize network frame flow disruption

Examples provided herein describe a method for facilitating detection of microbursts in queues. For example, a physical processor of a computing device may dynamically determine, for each queue of a plurality of queues of a network switch, whether a monitoring threshold based on an amount of usage of a buffer memory by the plurality of queues. The physical processor may detect, for each queue, whether congestion exists based on whether throughput on the queue exceeds the determined monitoring threshold. The first physical processor may then report information about a set of queues experiencing microbursts in the network switch based on the detection of congestion for each queue.

Detecting microbursts

An example system for Transmission Control Protocol (TCP) window sizing is disclosed. The example disclosed herein comprises a data flow detection engine, a TCP connection engine, a feedback engine, and a TCP window sizing engine. The data flow detection engine is to detect the number of data flows received by a buffer from a network component. The TCP connection engine is to determine a number of TCP connections within the network component from the number of data flows. The feedback engine is to send a feedback signal to a source of at least one of the number of TCP connections based on a state of the buffer and the number of TCP connections. The TCP window sizing engine is to adjust a TCP window size based on the feedback signal.

TCP window sizing

An example of high availability for FC or FCoE can include maintaining connection state information in a Fiber Channel over Ethernet (FCoE) Data Forwarder (FDF) or Fiber Channel Data Forwarder (FcDF). A failure of a first FCoE Forwarder (FCF) associated with the FDF can be detected. A second FCF can check a configuration file of the second FCF to see if the second FCF is responsible for the FDF. The second FCF can request the virtual domain ID, of the failed FCF, from a principal switch. The second FCF can be used as a service node for the FDF.

Maintenance of data forwarder connection state information

Example implementations relate to a switch resource manager for a network switching device. In an example, a network switching device includes a packet switching device and an operating system kernel. The operating system kernel includes a driver for the packet switching device. The network switching device also includes a switch resource manager including a library of commands for the packet switching device. The switch resource manager can send commands to the packet switching device via the driver. The operating system kernel can load a network operating system instance into user space of the network switching device.

Switch resource manager

An example of a distributed system partition can include a method for client service in a distributed switch. The method can include maintaining local and global connection state information between a primary and a secondary controlling fiber channel (FC) over Ethernet (FCoE) Forwarders (FCFs) or FC forwarder in a distributed switch. A partition in the distributed switch can be detected and service to subtended clients of the distributed switch can continued using local state information.

Distributed system partition

A network controller may include a flow identifier to identify a flow using frame information. The frame information may be transmitted by a network switch. The network controller may include a retriever to retrieve hard zoning configuration data corresponding to the flow. The hard zoning configuration data may be used by the network switch to update an access control list.

Hard zoning corresponding to flow

Network devices, systems, and methods, including executable instructions and/or logic thereon to achieve fiber channel one for N (1:N) redundancy. A network device includes a processing resource coupled to a memory. The memory includes program instructions executed by the processing resource to group a number of switches in a 1:N cluster and provide each switch with a (virtual) A_Port link to all members of the 1:N cluster. If a failure of a fiber channel over ethernet forwarder (FCF) occurs, the program instructions execute to re-establish or redirect a connection over an alternate path through a redundant FCF without having to synchronize a connection state across all switches in the cluster.

Fiber channel 1:N redundancy

A method includes establishing a communication link between a first Fiber Channel Forwarder (FCF) and a Fiber Channel (FC) fabric. The first FCF provides a first domain. The method includes establishing a communication link between a second FCF and the FC fabric. The second FCF provides a second domain. The method includes establishing a first intra-domain link between the first FCF and a first device. The first device including one of a Fiber channel over Ethernet Data Forwarder (FDF) and a Fiber Channel Data Forwarder (FCDF). The method includes establishing an inter domain link between the first device and the second domain.

Inter domain link for fibre channel

Network devices, systems, and methods, including program instructions are disclosed which provide a converged fabric for Fiber Channel over Ethernet (FCoE). A network device includes a Fiber Channel Controller (FCC), located outside of a lossless Ethernet network. The FCC has a processing resource coupled to a memory. The memory includes program instructions executed by the processing resource to terminate Fiber Channel (FC) Initialization Protocol (FIP) frames, generated to and by initiator and target devices, on the FCC.

Converged fabric for FCoE

An example of flow control transmission can comprise receiving a transmission instruction at a transmitter. Data can be sent from the transmitter at a rate of transmission based on the transmission instruction. A rate of transmission can be monitored over a time interval to determine a difference between a minimum rate of transmission and the monitored rate of transmission over the time interval. The transmission instruction can be overridden and data released to maintain the minimum rate of transmission based on the monitored difference.

Flow control transmission

A method for fiber channel (FC) host virtualization includes determining a virtual N_Port identification (ID) that is assigned and used by a host to route a frame from the host to a switch of a FC storage area network (SAN) fabric, and determining a FC SAN fabric based location N_Port ID that is assigned by the FC SAN fabric to the host to route the frame within the FC SAN fabric. The method further includes mapping, by a processor, the host assigned virtual N_Port ID to the FC SAN fabric based location N_Port ID.

Fibre channel host virtualization

A marching algorithm for the selection of middle stage switch elements in a network uses an arbitrary but settled sequence in which middle stage switch elements are sampled. The sequence is applied in the forward direction to find an appropriate middle stage switch element during connection and in a reverse direction during disconnection to find an appropriate middle stage switch element for rearrangement. All of the input switch elements use the same marching sequence. The marching algorithm is applicable to both single rate and multi-rate connections. In the case of multi-rate connections, multiple rearrangements may occur at disconnect to match the capacity of the terminated connection.

Growing community of inventors

Littleton, MA, United States of America

Siamack Ayandeh