Cisco Technology, Inc.

International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Ashok N Chippa

Ethan M Spiegel

Vijoy A Pandey

Daljeet Singh

Marek Tomaszewski

Ioana M Costea

Dar-Ren Leu

Anthony L Alles

Vipin K Garg

Robert E Zagst, Jr

Dino Farinacci

Nilanjan Mukherjee

Raghava Kodigenahalli Sivaramu

Hasmit S Grover

Nataraj Bacthu

Hoang-Nam Nguyen

Glen C Darling

Sze W Lao

In one embodiment, a system includes at least one processor and logic integrated with and/or executable by the processor, the logic being configured to instantiate, using an interface definition language (IDL) on a first server, a remote procedure call (RPC) function to exchange information between the first server and a second server, generate at least one stub on the first server using the RPC, and generate at least one stub on the second server using the RPC, wherein the at least one stub generated on the second server does not perform any marshalling or un-marshaling of data when endianess of the two servers is the same. Other systems, methods, and computer program products for exchanging information between servers using RPCs are described in more embodiments.

Automatically generating efficient remote procedure call (RPC) code for heterogeneous systems

A tool for partitioning a switch into one or more logical switches in a distributed system. The tool creates, by one or more computer processors, one or more logical switch routers, based, at least in part, on a user configuration. The tool assigns, by one or more computer processors, based, at least in part, on a user configuration, one or more ports to the one or more logical switch routers. The tool manages, by one or more computer processors, the one or more logical switch routers.

Logical switch architecture for network virtualization

A tool for assigning virtual port channels to one or more logical switch routers in a distributed system. The tool receives, by one or more computer processors, a request to assign a virtual port channel to a second logical switch router. The tool sends, by one or more computer processors, a request to negotiate a link-down on the channel on a first logical switch router to a universal fiber port on the first logical switch router for processing. The tool sends, by one or more computer processors, a request to create the channel on the second logical switch router to a second interface manager on the second logical switch router for processing. The tool sends, by one or more computer processors, a request to negotiate a link up on the channel on the second logical switch router to the universal fiber port on the first logical switch router for processing.

Virtual port support in a logical switch architecture

A tool for forwarding plane support in a distributed system utilizing a three-tiered architecture. The tool receives one or more messages, wherein the one or more messages include a plurality of state information. The tool determines a distribution scope for the one or more messages based, at least in part, on the plurality of state information. The tool determines a destination endpoint ID for the one or more messages, wherein the destination endpoint ID identifies one or more switch units to receive the one or more messages. The tool sends the one or more messages to a forwarding plane agent for distribution to the one or more switch units based, at least in part, on the distribution scope and the destination endpoint ID.

Abstraction layer and distribution scope for a logical switch router architecture

Methods and systems may be provided for installing a route entry associated with multicast traffic to a memory. Client devices may be notified of the route entry for advertisement by an active source device. The delivery group and delivery source may be retrieved from the information for the route entry. Multicast data trees may maintain delivery group and delivery source information for access.

Multicast active source discovery and management for layer-2 interconnect solutions

A tool for forwarding plane support in a distributed system. The tool receives, by one or more computer processors, one or more messages. The tool determines, by one or more computer processors, a distribution scope for the one or more messages. The tool determines, by one or more computer processors, a destination endpoint ID for the one or more messages. The tool sends, by one or more computer processors, the one or more messages to one or more forwarding plane agents.

A networking system, and more particularly an interface management subsystem, offers logical interface abstraction for networking system software. The networking system generally transmits data via a hardware interface. All software components in the control and forwarding plane use a Logical Interface (LIF) that is a logical representation of the hardware interface. A mapping occurs between the LIF and hardware interface used to transmit the data. Each LIF is represented by an LIF identifier used to store and retrieve logical interface records to and from shared memory accessible to all protocols and applications in the control and forwarding plane. The efficient storage and retrieval of such logical interface records allows for a global unique view of network interfaces, avoidance of data replication in each networking system software application's memory space, etc.

Logical interface encoding

The invention provides a method and system for providing unique ATM End System Addresses, in which each new device is assigned a unique address in an ATM network while allowing all new devices performing the PNNI protocol in a selected set (such as all those from a single manufacturer) to be assigned by default to the same peer group. In the invention, a first portion of the ATM address (from which the default peer group ID is determined) is by default configured to equal a selected value unique to the manufacturer (or another selected class of devices), which assures that all devices from the same manufacturer (or in that selected class) are by default configured in the same peer group for PNNI protocol purposes, while a second portion of the ATM address (comprising a switch number ID) and a third portion of the ATM address (comprising a device number ID) are by default both configured to equal a unique value for the device (such as a MAC address), which assures that each device is configured with a unique ATM address. The third portion of the ATM address may alternatively be determined using a different method, so long as selection of the third portion causes each device to be assigned a unique ATM address by default.

Format for automatic generation of unique ATM addresses used for PNNI

The invention provides a method and system for selecting one particular interface between a pair of adjacent nodes in an ATM network for assignment to a call in that network. The cell rate available on each possible interface is examined and compared with the cell rate expected for the call, and one of the interfaces is selected and assigned responsive to those cell rates. (1) The interface can be chosen which preserves the maximum remaining cell rate for future calls. (2) The interface with the highest-speed available link can be chosen, so long as cell rate capacity is available on that interface for the call.

Next hop selection in ATM networks

The invention provides a method and system for selecting routes in a switching network with resource reservation, such as an ATM network. A set of routes are periodically precomputed, so that routes are known between any sending node and any receiving node, subject to resource reservation requirements. Each incoming call has its resource requirements, such as call size, compared with a selected threshold, and if the requirements exceed the threshold, a route is dynamically recomputed for the call. Other aspects of routing may be responsive to the calls' resource requirements. For example, a ratio of required resources with quality-of-service restrictions to required resources without such restrictions may be used to determine whether to reject the call, responsive to the call's resource requirements. The call size may be compared against another selected threshold, and the decision to determine whether to use that ratio to reject the call may be made responsive to comparisons against one or both thresholds.

Growing community of inventors

Mountain View, CA, United States of America

Ashok N Chippa