Aggregation of mac data flows through pre-established path between ingress and egress switch to reduce number of number connections

A method of forwarding MAC frame data packets along a pre-established path in a switched communications network, the network including a plurality of source and destination end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, and each end system having a unique physical address, the method comprising the steps of:

• when a first packet is received on an access port of an ingress switch, the ingress switch determining a virtual path ID that describes the pre-established path from the ingress switch to an egress switch attached to a destination end system through one or more intervening switches, modifying the first packet to include the virtual path ID and forwarding the modified packet to the egress switch on the pre-established path.

A method of determining pre-established paths in a switched communications network, wherein data packets are communicated along the paths, the network including a plurality of source and destination end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, and each end system having a unique physical address, the method comprising the steps of:

• prior to a connection setup for establishing communication between a source end system and destination end system, determining the pre-established paths between different pairs of ingress and egress switches, which pre-established paths are known to the respective ingress and egress switches and each intermediate switch therebetween on the pre-established path;
• and
• at a connection setup phase when a MAC frame data packet identifying the destination is received at an ingress switch, the ingress switch and an egress switch connected to the destination exchanging a message which identifies an out-port and out-header on the egress switch for modifying and transmitting the data packet addressed to the destination.

A method of forwarding data packets along a pre-established path in a switched communications network, the network including a plurality of source and destination end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, and each end system having a unique MAC address, wherein data packets containing MAC addresses for the source and destination end systems are transmitted on the network, the method comprising the steps of:

• replacing the MAC addresses in the data packet with a virtual path ID that describes the pre-established path from an ingress switch, connected to the source end system, to an egress switch through one or more intervening switches, the egress switch being connected to the destination end system;
• and
• forwarding the data packet along the pre-established path.

A method of forwarding data packets along a pre-established path in a switched communications network, the network including a plurality of source and destination end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, and each end system having a unique MAC address, wherein data packets containing addressing data including MAC addresses for the source and destination end systems are transmitted on the network, the method comprising the steps of:

• transmitting a data packet from an ingress switch, connected to a source end system, to an egress switch, connected to a destination end system, on the pre-established path from the ingress switch to the egress switch, wherein the addressing data of the data packet is reformatted only at the ingress and egress switches.

An apparatus for forwarding a plurality of groups of data along a single one of a plurality of pre-established paths in a switched communications network, the network including a plurality of end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, and each end system having a unique physical address, the apparatus comprising:

• each one of the switches having means for maintaining a connection database of pre-established paths between select pairs of ingress and egress switches through one or more intervening switches;
• and
• when a a plurality of groups of data is received on a port of one switch, the one switch having means for accessing its connection database to determine the single pre-established path of said plurality of pre-established paths upon which the plurality of groups of data is forwarded, and wherein each of the plurality of groups of data represents a separate data flow.