Abstract

A virtual circuit in a network device reformats one or more incoming data streams at a non-predetermined data rate into an outgoing data stream at a predetermined data rate, thereby allowing multiple data streams with non-predetermined data rates that are less than the predetermined data rate to be combined and output from a single network port.

IPC Classes  ?

• H04L 47/41 - Flow controlCongestion control by acting on aggregated flows or links
• H04L 47/24 - Traffic characterised by specific attributes, e.g. priority or QoS

Abstract

A virtual network device includes a framing circuit that determines a virtual exit device associated with each input frame of a plurality of input frames based on a frame type for each input frame. A plurality of first encapsulated frames is formed based on encapsulation of the plurality of input frames. A plurality of transmit virtual ports, coupled to the framing circuit, determines next hops in a virtual network for the plurality of first encapsulated frames based on the virtual exit devices corresponding to the plurality of first encapsulated frames, and encapsulates the plurality of first encapsulated frames to form a plurality of second encapsulated frames. A transmit virtual switch selectively couples one or more transmit virtual ports to a network physical port based on whether a full signal from the one or more transmit virtual ports has been received by the transmit virtual switch.

IPC Classes  ?

• H04L 49/00 - Packet switching elements
• H04L 47/62 - Queue scheduling characterised by scheduling criteria
• H04L 49/103 - Packet switching elements characterised by the switching fabric construction using a shared central bufferPacket switching elements characterised by the switching fabric construction using a shared memory

Abstract

A virtual forwarding device is described that includes a virtual port which receives a second encapsulated frame from a receive physical port and determines whether a current device is a last hop device. When the current device is not the last hop device, the virtual port unpacks the second encapsulated frame to extract a first encapsulated frame. The virtual port extracts an identifier of a virtual exit device from the first encapsulated frame and determines a next hop device and an alternate hop device from the identifier. When a transmit physical port coupled to the next hop device can accept frames for forwarding, the virtual port encapsulates the first encapsulated frame to form a third encapsulated frame and forwards the third encapsulated frame to the transmit physical port. Else, the virtual port determines whether a transmit physical port coupled to the alternate hop device can accept frames for forwarding.

IPC Classes  ?

• H04L 12/46 - Interconnection of networks
• H04B 10/25 - Arrangements specific to fibre transmission
• H04B 10/27 - Arrangements for networking
• H04L 45/74 - Address processing for routing

Abstract

A virtual network includes a virtual entry device, a virtual exit device, and a communication channel that couples the virtual entry device to the virtual exit device in a web that lies between and interconnects a local router/switch with a remote router/switch device, where the virtual entry device and the virtual exit device have static forwarding tables which provide substantially improved performance.

IPC Classes  ?

• H04L 12/46 - Interconnection of networks

Abstract

A virtual network device increases the effective number of local physical ports by converting each of the local physical ports into a plurality of virtual local physical ports, and the effective number of network physical ports by converting each of the network physical ports into a plurality of virtual network physical ports.

IPC Classes  ?

• H04L 49/00 - Packet switching elements
• H04L 47/62 - Queue scheduling characterised by scheduling criteria
• H04L 49/103 - Packet switching elements characterised by the switching fabric construction using a shared central bufferPacket switching elements characterised by the switching fabric construction using a shared memory

Abstract

A virtual circuit in a network device reformats one or more incoming data streams at a non-predetermined data rate into an outgoing data stream at a predetermined data rate, thereby allowing multiple data streams with non-predetermined data rates that are less than the predetermined data rate to be combined and output from a single network port.

IPC Classes  ?

• H04L 47/41 - Flow controlCongestion control by acting on aggregated flows or links
• H04L 47/24 - Traffic characterised by specific attributes, e.g. priority or QoS

Abstract

A virtual circuit in a network device reformats one or more incoming data streams at a non-predetermined data rate into one or more outgoing data streams at a predetermined data rate, thereby allowing multiple data streams with non-predetermined data rates that are less than the predetermined data rate to be combined and output from a single network port, and a single data stream with a non-predetermined data rate that is greater than the predetermined data rate to be split and output from two or more network ports.

IPC Classes  ?

• H04L 12/891 - Flow control of aggregated links or flows
• H04L 12/851 - Traffic type related actions, e.g. QoS or priority

Abstract

A virtual network device increases the effective number of local physical ports by converting each of the local physical ports into a plurality of virtual local physical ports, and the effective number of network physical ports by converting each of the network physical ports into a plurality of virtual network physical ports.

IPC Classes  ?

• H04L 12/931 - Switch fabric architecture
• H04L 12/935 - Switch interfaces, e.g. port details
• H04L 12/863 - Queue scheduling, e.g. Round Robin
• H04L 12/933 - Switch core, e.g. crossbar, shared memory or shared medium

Abstract

A virtual network includes a virtual entry device, a virtual exit device, and a communication channel that couples the virtual entry device to the virtual exit device in a web that lies between and interconnects a local router/switch with a remote router/switch device, where the virtual entry device and the virtual exit device have static forwarding tables which provide substantially improved performance.

IPC Classes  ?

• H04L 12/46 - Interconnection of networks

Abstract

A method of forming a virtual network includes forming an arrangement of virtual fibers from physical fiber optic cables that interconnect virtual entry devices, virtual forwarding devices, and virtual exit devices together. The virtual entry devices combine data and frames to allow a number of sources with data and frame rates that are less than a predetermined frame rate of a physical port to be output from the physical port.

IPC Classes  ?

• H04L 12/46 - Interconnection of networks
• H04B 10/27 - Arrangements for networking
• H04L 45/74 - Address processing for routing
• H04B 10/25 - Arrangements specific to fibre transmission