Abstract: A service provider (SP) cloud rendezvous point (CRP-SP) in a fixed cloud rendezvous point (CRP) hierarchy, the CRP-SP comprising a memory comprising a cloudcasting information base (CCIB), a receiver configured to receive a Register request from a first site CRP (CRP Site) in an SP network, the Register request indicating a first portion of a virtual extensible network (VXN) is reachable by the SP network at the first CRP Site, a processor coupled to the receiver and the memory, the processor configured to query the CCIB to determine that a second portion of the VXN is reachable by the SP network at a second CRP Site, and a transmitter coupled to the processor and configured to transmit Report messages to both the first CRP Site and the second CRP Site, the Report messages indicating the VXN is reachable at both the first CRP Site and the second CRP Site.

Abstract: A method of avoiding routing interruption during transition to a topology transparent zone (TTZ) is described. The method includes virtualizing a path from an edge router to another edge router within the TTZ in a first direction without removing original links, wherein the original links are links from the edge router to its neighboring routers within the TTZ, receiving, by the edge router within the TTZ, a router link state advertisement (LSA) from the another edge router within the TTZ while the original links remain in place, wherein the LSA comprises a path from the another edge router to the edge router in a second direction different from the first direction, and removing, by the edge router within the TTZ, the original links after the LSA has been received from the another edge router and the virtualization of the path is complete.

Abstract: A method implemented by network element (NE) configured as a local cloud switch point (CSP), the method comprising receiving a first post message from a remote CSP via a cloudcasting network, wherein the first post message indicates a remote virtual extensible network (VXN) identifier (ID) of a remote virtual network attached to the remote CSP, receiving a first data packet from a local virtual network attached to the local CSP, wherein the first data packet is associated with the remote virtual network, performing encapsulation on the first data packet to produce a first encapsulated data packet by selecting an encapsulation header for the first data packet based on the remote VXN ID and not based on network protocols of the local virtual network and the remote virtual network, and sending the first encapsulated data packet to the remote CSP.

Abstract: An apparatus for zone routing comprising a transmitter coupled to one or more communication nodes in a network, wherein the communication nodes correspond to less than all edge nodes of the network, a receiver coupled to the communication nodes, and a processor coupled to the transmitter and the receiver, wherein the processor is configured to compute a first path for a label-switched path (LSP) through the network, wherein the first path extends from an ingress node of the edge nodes to an egress node of the edge nodes, obtain a second path that traverses through a first communication node of the communication nodes available to the egress node, and send, via the transmitter, a first LSP creation request message to the first communication node requesting creation of the LSP along the first path.

Abstract: A method of avoiding routing interruption during transition to a topology transparent zone (TTZ) including virtualizing a path from an edge router to another edge router within the TTZ in a first direction without removing original links, wherein the original links are links from the edge router to its neighboring routers within the TTZ, receiving, by the edge router within the TTZ, a router link state advertisement (LSA) from the another edge router within the TTZ while the original links remain in place, wherein the LSA comprises a path from the another edge router to the edge router in a second direction different from the first direction, and removing, by the edge router within the TTZ, the original links after the LSA has been received from the another edge router and the virtualization of the path is complete.

Abstract: An apparatus for zone routing, comprising a transmitter, a receiver, and a processor coupled to the transmitter and the receiver, wherein the processor is configured to determine a path through a network, wherein the path extends from an ingress edge node of the network to a first egress edge node of the network, obtain a global identifier (ID) for identifying a label-switched path (LSP) along the path, send, via the transmitter, a first LSP creation request message to the first egress edge node requesting creation of the LSP, wherein the first LSP creation request message comprises the global ID, and receive, via the receiver, a LSP creation response message from the ingress edge node indicating a creation status of the LSP in response to the first LSP creation request message.

Abstract: A network element (NE) configured as a local cloud switch point (CSP) comprises a memory configured to store remote virtual routing information in association with an identifier (ID) of a remote CSP in a mapping table, wherein the remote virtual routing information is associated with a remote virtual network associated with the remote CSP, and wherein the remote virtual routing information comprises a virtual extensible network (VXN) type identifier (ID), an address family ID (AFI), and a subsequent AFI (SAFI). The NE further comprises a processor coupled to the memory and configured to perform encapsulation on a data packet to generate a encapsulated data packet by adding an outer header to the data packet based on the AFI, adding a virtualization header to the data packet based on the VXN type ID, and adding an inner header to the data packet based on the SAFI. The NE further comprises a transmitter coupled to the processor and configured to transmit the encapsulated data packet to the remote CSP.

Abstract: A method implemented by a sending host implemented as a network element (NE) comprises receiving, by a receiver of the sending host, a set of locators from a distributed mapping system, each of the locators in the set of locators being an address associated with the receiving host, storing, in a memory of the sending host, the set of locators in an entry of a local identifier (ID)-to-locator database in association with an ID of the receiving host, transmitting, by a transmitter of the sending host, a plurality of packets to a plurality of endpoint routers (xTRs), each of the xTRs associated with each of the locators in the set of locators, and receiving, by the receiver of the sending host, a response from one of the xTRs in response to sending the plurality of packets to the plurality of xTRs, a locator associated with the one of the xTRs being an address of a current location of the receiving host.

Abstract: An ingress node configured to receive a first request for a temporal label switched path (LSP) in the network. The first request indicates the ingress node, egress node, network constraint, and scheduled time interval having a predetermined start time and a predetermined end time for the temporal LSP to carry traffic. The ingress node computes a shortest path in the network for the temporal LSP that satisfies the network constraint in a shifted time interval when the request indicates that the time interval is elastic, and reserves a network resource for use during the shifted time interval for the temporal LSP in advance of the predetermined start time on a link extending from the ingress node to a next hop node on the path. The ingress node sends a path message to the next hop node to set up the temporal LSP in the shifted time interval.

Abstract: Embodiments are provided herein to enable single level network abstraction for a service across one or more domains. The embodiments use a single network ID to identify a service and a corresponding virtual network topology across any number of domains at a physical network. A virtual network topology can be abstracted for each service, based on the physical underlying network topology. A network controller determines, for a service, the virtual network topology within a physical network, and binds the service to the virtual network topology via a virtual network ID, which defines a single forwarding domain of the virtual network topology across the physical network. The virtual network ID is then indicated to the nodes of the virtual network topology, thus enabling the nodes to identify and forward traffic for the service, within the single forwarding domain, between end clients from edge to edge of the physical network.

Abstract: A network node comprising a receiver and a processor is disclosed. The receiver is configured to receive an identifier of an intermediate-system-to-intermediate-system (ISIS) topology-transparent-zone (TTZ) to which the network node has been assigned, further configured to receive and store ISIS TTZ topology information, and further configured to receive an indication to distribute topology information related to the ISIS TTZ to other network nodes assigned to the ISIS TTZ. The processor is coupled to the receiver and configured to generate a TTZ-related type-length-value (TLV) and set an indicator in the TTZ-related TLV to indicate that topology information related to the ISIS TTZ is to be distributed, add the TTZ-related TLV to TTZ-related information associated with the network node, and initiate distribution of the TTZ-related information to all TTZ nodes adjacent to the network node.

Abstract: A method for controlling a data flow in a domain of an OpenFlow protocol controlled software-defined network (SDN) comprising receiving a request from a network element for instructions to route the data flow through the OpenFlow SDN, determining a route for the data flow through the OpenFlow SDN, transmitting a unified header to the network element in the OpenFlow SDN, wherein the unified header facilitates transmission of data flows through the OpenFlow SDN that are encoded according to a plurality of network abstraction types, and transmitting instructions for forwarding the data flow along the route through the OpenFlow SDN, wherein the instructions for forwarding the data flow along the route through the OpenFlow SDN comprise one or more match fields, one or more mask values corresponding to the match fields, and one or more actions for the network element in the OpenFlow SDN to perform on the data flow.

Abstract: A network element (NE) in a network, comprising a memory configured to store time-based traffic engineering (TE) information associated with network resource reservations on a link attached to the NE in a series of time intervals each having a predetermined start time and a predetermined end time, and a processor coupled to the memory and configured to reserve, at a first current time, a network resource for a temporal tunnel service (TTS) on the link to carry traffic during a scheduled time interval subsequent to the first current time, wherein the scheduled time interval comprises a scheduled start time and a scheduled end time, and update, at the first current time, the time-based TE information in the scheduled time interval according to the network resource reserved to produce a first updated TE information in the scheduled time interval.

Abstract: The system and method of the present disclosure relates to technology for a network system supporting multiple topology transparent zones (TTZs) on an edge node. TTZs have a topology including TTZ nodes consisting of edge nodes and internal nodes connected together by internal links. The edge nodes may also be connected to external nodes outside of the TTZ. The edge node is responsible for generating and distributing link state advertisements (LSAs) to generate virtual paths from the edge node to other edge nodes in each of the TTZs. Each TTZ sharing the edge node and each external node neighboring one of the other edge nodes of the TTZs is virtualized by distribution of the LSAs. However, the internal topology of each TTZ is concealed from each of the other TTZs sharing the edge node and from any neighboring external node connected to one of the other edge nodes.

Abstract: A label switched path (LSP) establishing method that includes receiving a first path message from a network node outside of a topology-transparent zone (TTZ) along a path for the LSP, computing a TTZ path through the TTZ from the network component to an egress TTZ edge node along the LSP, sending a second path message to a TTZ internal node along the TTZ path, receiving a first reservation (RESV) message from the TTZ internal node that includes a label allocated for the egress TTZ edge node, and sending a second RESV message that includes a label allocated for the network component and the label allocated for the egress TTZ edge node to the network node.

Abstract: The system and method of the present disclosure relates to technology for a network system supporting multiple topology transparent zones (TTZs) on an edge node. TTZs have a topology including TTZ nodes consisting of edge nodes and internal nodes connected together by internal links. The edge nodes may also be connected to external nodes outside of the TTZ. The edge node is responsible for generating and distributing link state advertisements (LSAs) to generate virtual paths from the edge node to other edge nodes in each of the TTZs. Each TTZ sharing the edge node and each external node neighboring one of the other edge nodes of the TTZs is virtualized by distribution of the LSAs. However, the internal topology of each TTZ is concealed from each of the other TTZs sharing the edge node and from any neighboring external node connected to one of the other edge nodes.

Abstract: A service provider (SP) cloud rendezvous point (CRP-SP) in a fixed cloud rendezvous point (CRP) hierarchy, the CRP-SP comprising a memory comprising a cloudcasting information base (CCIB), a receiver configured to receive a Register request from a first site CRP (CRP Site) in an SP network, the Register request indicating a first portion of a virtual extensible network (VXN) is reachable by the SP network at the first CRP Site, a processor coupled to the receiver and the memory, the processor configured to query the CCIB to determine that a second portion of the VXN is reachable by the SP network at a second CRP Site, and a transmitter coupled to the processor and configured to transmit Report messages to both the first CRP Site and the second CRP Site, the Report messages indicating the VXN is reachable at both the first CRP Site and the second CRP Site.

Abstract: A method implemented by a path computation element centralized controller (PCECC), the method comprises: receiving a service request to provision for a service from a first edge node and a second edge node in a network; computing a path for a label switched path (LSP) from the first edge node to the second edge node in response to the service request; reserving label information for forwarding traffic of the service on the LSP; and sending a label update message to a third node on the path to facilitate forwarding of the traffic of the service on the path, wherein the label update message comprises the label information.

Abstract: A method implemented by a network element (NE) configured as a temporal tunnel service (TTS) controller, comprising computing, via a processor of the NE, a path in a network for a temporal label switched path (LSP), wherein the path satisfies a constraint in a scheduled time interval comprising a predetermined start time and a predetermined end time, reserving, at a current time prior to the predetermined start time via the processor, a first network resource on a link along the path computed for the temporal LSP, wherein the first network resource is reserved for the temporal LSP to carry traffic in the scheduled time interval, and sending, at the predetermined start time via a transmitter of the NE, a LSP creation request to a node associated with the temporal LSP to request creation of the temporal LSP along the path in the network.

Abstract: The system and method of the present disclosure relates to technology for a network system supporting multiple topology transparent zones (TTZs) on an edge node. TTZs have a topology including TTZ nodes consisting of edge nodes and internal nodes connected together by internal links. The edge nodes may also be connected to external nodes outside of the TTZ. The edge node is responsible for generating and distributing link state advertisements (LSAs) to generate virtual paths from the edge node to other edge nodes in each of the TTZs. Each TTZ sharing the edge node and each external node neighboring one of the other edge nodes of the TTZs is virtualized by distribution of the LSAs. However, the internal topology of each TTZ is concealed from each of the other TTZs sharing the edge node and from any neighboring external node connected to one of the other edge nodes.