Brocade Communications Systems, Inc.

Brocade Communication Systems LLC

Silverback Systems Inc.

Somesh Gupta

Venkatesh Nagapudi

Phanidhar Koganti

Anoop Ghanwani

Shunjia Yu

Tom Herbert

Boris Zemlyak

One embodiment of the present invention provides a switch. The switch includes a management mechanism and a configuration mechanism. During operation, the management mechanism is configured to operate the switch in conjunction with the partner switch as a single logical switch. The configuration mechanism is configured to assign a virtual switch identifier to the logical switch.

Redundant host connection in a routed network

A network device monitors the traffic of individual flows through one of its ingress ports and, if the traffic volume exceeds a predetermined threshold, signals for a reduction in data traffic volume transmitted to that ingress port from one or more source devices. Example signals may include without limitation a unicast congestion message sent to the source of a flow, an Explicit Congestion Notification to one or more source devices, and the dropping of packets by the receiving device. In response to such signals, one or more of the source devices decrease the transmission rate of data traffic to the receiving device.

Ingress rate limiting

A technique for interrupt moderation allows coalescing interrupts from a device into groups to be processed as a batch by a host processor. Receive and send completions may be processed differently. When the host is interrupted for receive completions, it may check for send completions, reducing the need for interrupts related to send completions. Timers and a counter allow coalescing interrupts into a single interrupt that can be used to signal the host to process multiple completions. The technique is suitable for both dedicated interrupt line and message-signaled interrupts.

Interrupt moderation

A network interface card comprising an upper layer protocol (ULP) handler, a TCP handler capable of interfacing with said ULP handler and, a link handler. The network interface card is adapted to take over and perform at least one session layer function of a host computer connected to a network.

Growing community of inventors

San Jose, CA, United States of America

Somesh Gupta