A first network device receives an association relationship sent by a second network device, where the association relationship includes an association relationship between a first path and a second path. The first network device generates first routing information between the first network device and a target network device based on the association relationship, where the first routing information is used by the first network device to send a packet to the target network device through the first path, and when a cross-slice condition is met, the first routing information is used by the first network device to send a packet to the target network device through the second path.

A method is provided in one example embodiment and includes configuring on a network element a first tunnel from the network element to a first network, wherein the configuring comprises mapping a nexthop address of the local network element to a transport address of the tunnel on the network to create a first nexthop-to-transport mapping for the network element; and advertising the first nexthop-to-transport mapping along with routing information for the network element to remote network elements.

The present application relates to communications between a partner network and a wide area network (WAN). The partner network and WAN may exchange representations of the respective networks including a delay profile for the partner network. The WAN receives a network delay profile for multiple virtual network entities within the partner network. The multiple virtual network entities include at least a plurality of peering locations with the WAN. The WAN determines a path from the partner network through the WAN via a selected peering location of the plurality of peering locations with the WAN to a destination based on at least the network delay profile. The WAN deploys a policy for an agent within the partner network. The policy identifies traffic for the destination to route through the WAN via the selected peering location. The WAN routes traffic from the selected peering location to the destination along the path.

A method is provided for operating a network switch comprising a plurality of input ports and a plurality of output ports. The method comprises receiving a first data packet received via a first input port and a second data packet received via a second input port to be delivered to an egress endpoint connected to a first output port, configuring a plurality of crossbar switch units arranged in a tiled architecture to pass the first data packet to the first output port via a primary path and pass the second data packet to the first output port via a secondary path, and transmitting the first data packet and the second data packet to the egress endpoint. The first data packet and the second data packet pass through the plurality of crossbar switch units simultaneously.

A method is provided for operating a network switch comprising a plurality of input ports and a plurality of output ports. The method comprises receiving a first data packet received via a first input port and a second data packet received via a second input port to be delivered to an egress endpoint connected to a first output port, configuring a plurality of crossbar switch units arranged in a tiled architecture to pass the first data packet to the first output port via a primary path and pass the second data packet to the first output port via a secondary path, and transmitting the first data packet and the second data packet to the egress endpoint. The first data packet and the second data packet pass through the plurality of crossbar switch units simultaneously.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method of an access and mobility management function (AMF). The method includes monitoring whether a user equipment (UE) registered to a network slice establishes a protocol data unit (PDU) session using the network slice for a time, determining that the UE does not establish the PDU session in the time based on an expiration of a timer and deregistering the UE for the network slice.

The present disclosure discloses a method, system, and device for switching a Layer 2 tunnel. The method includes: when the Layer 2 tunnel is switched from a first point of presence (POP) server to a second POP server, obtaining, by the first POP server, a current address information table, and constructing an address information packet; forwarding, by a switch, the address information packet to the second POP server; constructing, by the second POP server, spoofing packets according to an address information table carried in the address information packet; wherein each MAC address in the address information table is sequentially used as a source address of each of the spoofing packets; and receiving, by the switch, the spoofing packet sent from the second POP server, and updating a local address information table according to a port for receiving the spoofing packet and a source address in the spoofing packet.

The present disclosure discloses a method, system, and device for switching a Layer 2 tunnel. The method includes: when the Layer 2 tunnel is switched from a first point of presence (POP) server to a second POP server, obtaining, by the first POP server, a current address information table, and constructing an address information packet; forwarding, by a switch, the address information packet to the second POP server; constructing, by the second POP server, spoofing packets according to an address information table carried in the address information packet; wherein each MAC address in the address information table is sequentially used as a source address of each of the spoofing packets; and receiving, by the switch, the spoofing packet sent from the second POP server, and updating a local address information table according to a port for receiving the spoofing packet and a source address in the spoofing packet.

The present application relates to communications between a partner network and a wide area network (WAN). The partner network and WAN may exchange representations of the respective networks including a delay profile for the partner network. The WAN receives a network delay profile for multiple virtual network entities within the partner network. The multiple virtual network entities include at least a plurality of peering locations with the WAN. The WAN determines a path from the partner network through the WAN via a selected peering location of the plurality of peering locations with the WAN to a destination based on at least the network delay profile. The WAN deploys a policy for an agent within the partner network. The policy identifies traffic for the destination to route through the WAN via the selected peering location. The WAN routes traffic from the selected peering location to the destination along the path.

An object is to provide a logical network construction system. A logical network construction system is provided with first and second gateway devices and a controller which communicate with each other via a network, a source device, a destination device, and a storage unit in which an entire device connection list and an entire route definition list are stored. A controller constructs a logical network for communication between a source device connected to a first port of a first gateway device and a destination device connected to a second port of a second gateway device on the basis of an entire device connection list and an entire route definition list.