Systems, methods, and apparatuses are provided herein for time-stamping a Controller Area Network (CAN) bus message. Control circuitry (e.g., of a network bridge) may receive a CAN message, and may, in response to receiving the CAN message, generate a time stamp. The control circuitry may add an entry to a lookup table stored in memory, wherein the entry correlates a CAN message Identifier (ID) corresponding to the CAN message with the time stamp. The control circuitry may encapsulate the CAN message and the time stamp, and may transmit the CAN message according to the time stamp.

Systems and methods are provided for routing a message in a network. A bit length of an identifier field of a received message is identified. A lookup table is selected based on the bit length of the identifier field. The identifier field is used as a reference for the lookup table to identify a bus for the message, and the message is forwarded to the bus.

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.

Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

Embodiments provide a service instance mapping method, apparatus and system. The service instance mapping method includes: correlating a layer-2 service instance with a service access port of the service instance, and determining correspondence between the service access port and a service instance identifier. The method also includes mapping the service instance identifier to a service label of a packet.

Systems, methods, and apparatuses are provided herein for time-stamping a Controller Area Network (CAN) bus message. Control circuitry (e.g., of a network bridge) may receive a CAN message, and may, in response to receiving the CAN message, generate a time stamp. The control circuitry may add an entry to a lookup table stored in memory, wherein the entry correlates a CAN message Identifier (ID) corresponding to the CAN message with the time stamp. The control circuitry may encapsulate the CAN message and the time stamp, and may transmit the CAN message according to the time stamp.

Various embodiments establish a virtual private network (VPN) between a remote network and a private network. In one embodiment, a first system in the remote network establishes a connection with a central system through a public network. The central system is situated between the first system and a second system in the private network. The first system receives, from the central system and based on establishing the connection, a set of VPN information associated with at least the second system. The first system disconnects from the central system and establishes a VPN directly with the second system through the public network based on the set of VPN information.

The present disclosure provides a method and an edge device for accessing an IP network. A record is pre-configured to associate and record a port number, a VLAN ID and an EVI service instance ID in the record. A first packet is received from a user side. A corresponding EVI service instance ID is searched in the record according to a port number of a port through which the first packet is received, and a VLAN ID of the first packet. The first packet is then forwarded in an EVI service instance corresponding to the EVI service instance ID.

Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

Systems, methods, and apparatuses are described herein for implementing a switched Controller Area Network (CAN). In some embodiments, control circuitry of a bridge may receive a CAN message. The control circuitry may identify a first plurality of nodes to which the CAN message is addressed by comparing a virtual CAN bus identifier of the CAN message to entries of a virtual CAN bus lookup table, and may identify a second plurality of nodes to which the CAN message is addressed by comparing a message identifier (ID) of the CAN message to entries of a message ID lookup table. The control circuitry may perform a logical AND operation between the first plurality of nodes and the second plurality of nodes, and may transmit the CAN message to a node that satisfies the logical AND operation.