Abstract: A system and method provide transparent LAN services in a metro-WAN environment to extend enterprise LANs over metro and wide area networks. The transparent LAN services generally provide customers with a layer two Ethernet connectivity with MAC learning capabilities.

Abstract: In an example embodiment, packets for a selected flow are replicated and sent over one or more diverse paths, such as a primary path and at least one secondary path, to a destination switching device. At the destination switching device, one copy of the replicated packets is selected for delivery to the destination, and the remaining copies are discarded. In the event that packets are not received at the destination switching device due to loss of connection on the primary path or packets are not timely delivered due to congestion on the primary path, a different path may be selected as the primary path.

Abstract: In an example embodiment, there is disclosed herein logic encoded in at least one tangible media for execution and when executed operable to receive a packet. The logic determines a client associated with the packet. The client associated with a service set, and the service set associated with a transmitter. The logic determines a drop probability for the selected client determines a current packet arrival rate for the selected client and determines whether to enqueue or drop the packet based on the drop probability for the selected client and the current packet arrival rate associated with the selected client. The drop probability is based on a packet arrival rate and virtual queue length for the, which is based on a packet arrival rate and virtual queue length for the service set that is based on a packet arrival rate and virtual queue length for the transmitter.

Abstract: In an example embodiment, an apparatus comprising a physical layer processing device that comprises logic configured to process a packet received from a physical layer interface is disclosed. The physical layer processing device logic is further configured to determine a preamble portion of the packet and a data portion of the packet. The physical layer processing device logic is further configured to insert a timestamp into the preamble portion of the packet. The physical layer processing device logic forwards the packet with the timestamp inserted into the preamble.

Abstract: In an example embodiment, packets for a selected flow are replicated and sent over one or more diverse paths, such as a primary path and at least one secondary path, to a destination switching device. At the destination switching device, one copy of the replicated packets is selected for delivery to the destination, and the remaining copies are discarded. In the event that packets are not received at the destination switching device due to loss of connection on the primary path or packets are not timely delivered due to congestion on the primary path, a different path may be selected as the primary path.

Abstract: In an example embodiment, an apparatus comprising a physical layer processing device that comprises logic configured to process a packet received from a physical layer interface is disclosed. The physical layer processing device logic is further configured to determine a preamble portion of the packet and a data portion of the packet. The physical layer processing device logic is further configured to insert a timestamp into the preamble portion of the packet. The physical layer processing device logic forwards the packet with the timestamp inserted into the preamble.

Abstract: A system and method for selective flooding in a multicast network are disclosed. Some embodiments provide for a promiscuous mode device on a network to signal to one or more other devices on the network that the promiscuous mode device is operating in promiscuous mode. In response to such a signal, one or more devices on the network dynamically cease operating in non-broadcast mode and dynamically commence operating in broadcast mode to ensure that the promiscuous mode device sees all data transmissions on the network or sub-network.

Abstract: A system and method provide transparent LAN services in a metro-WAN environment to extend enterprise LANs over metro and wide area networks. The transparent LAN services generally provide customers with a layer two Ethernet connectivity with MAC learning capabilities.

Abstract: Logical ports allow multiple customers to be connected to and to receive different services over a common physical port of a packet forwarding device. Such logical ports allow for customer separation and may be created based on VLAN ID and MPLS labels. In one embodiment, each service provided via a packet forwarding device is associated with a unique logical port. The logical port may span multiple physical ports.