Abstract:
In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.
Abstract:
In one embodiment, a method includes receiving a packet comprising a destination address in a destination address field of the packet, where the destination address including at least a first global identifier and a second global identifier, determining that the first global identifier corresponds to the first network apparatus, determining that a local identifier in the destination address is associated with the first global identifier, identifying one or more instructions associated with the local identifier, performing one or more functions instructed by the one or more instructions, updating the destination address in the destination field of the packet to an updated destination address, determining a forwarding rule associated with the packet, and forwarding the packet with the updated destination address based on the forwarding rule.
Abstract:
In one embodiment, a Segment Routing network node provides efficiencies in processing and communicating Internet Protocol packets in a network. An Internet Protocol (IP) packet, possibly a Segment Routing packet, is received by a node in a network, which updates the packet according to a corresponding Segment Routing Policy, that includes an ordered list of Segment Identifiers comprising, in first-to-last order, a first Segment Identifier followed by one or more subsequent Segment Identifiers. The updating of the packet includes setting the Destination Address to the first Segment Identifier, and adding said one or more subsequent Segment Identifiers, but not the first Segment Identifier, in a first Segment Routing Header. The updated packet is sent into the network without the first Segment Identifier being added to a Segment Routing Header in response to the Segment Routing Policy.
Abstract:
In one embodiment, a Segment Routing network node provides efficiencies in processing and communicating Internet Protocol packets in a network. An Internet Protocol (IP) packet, possibly a Segment Routing packet, is received by a node in a network, which updates the packet according to a corresponding Segment Routing Policy, that includes an ordered list of Segment Identifiers comprising, in first-to-last order, a first Segment Identifier followed by one or more subsequent Segment Identifiers. The updating of the packet includes setting the Destination Address to the first Segment Identifier, and adding said one or more subsequent Segment Identifiers, but not the first Segment Identifier, in a first Segment Routing Header. The updated packet is sent into the network without the first Segment Identifier being added to a Segment Routing Header in response to the Segment Routing Policy.
Abstract:
In an embodiment, a method comprises processing an input data stream as the data stream is streamed and producing a derived stream therefrom; storing the input data stream in an input archive; suspending processing of the input data stream; subsequent to suspending processing, resuming processing of the input data stream, wherein resuming comprises: storing newly received data in the input data stream in a buffer, as the input data stream is streamed; determining a first timestamp; determining a second timestamp; searching the input archive to find a data item that matches the first timestamp of the last processed data item; processing data in the input archive having timestamps that are greater than the first timestamp until arriving at data with a third timestamp that is greater than the second timestamp; processing the input data stream from the buffer; continuing processing the input data stream as the input stream is streamed.
Abstract:
This disclosure describes techniques and mechanisms for coupling measurement probes with customer data traffic and enabling real-time and selective management of ECMP pathways that are not meeting performance metric(s) in a service provider network. Nodes within the service provider network are configured to perform specific hashing behavior. An ingress node may be configured to create and maintain a TCAM table to store flow label(s) corresponding to ECMP pathways that are not meeting performance metric(s). The system may configure performance measurement session(s) between an ingress node and an egress node. The system may receive performance data, identify pathway(s) violating performance metric(s), and may perform action(s) in real-time.
Abstract:
Systems and techniques are provided for implementing multiprotocol label switching (MPLS) header extensions. In some examples, a method can include, receiving, by a router of a MPLS network, a data packet. In some aspects, the method can include adding, by the router of the MPLS network, at least one entry to an MPLS stack of the data packet, wherein the at least one entry includes an MPLS extension indicator (MEI) that is associated with at least one of an in-stack extension header presence indicator (IPI) and a bottom-of-stack extension header presence indicator (BPI). In some examples, the method can include adding, based on the IPI and the BPI, at least one of an in-stack extension header and a bottom-of-stack extension header to the MPLS stack of the data packet.
Abstract:
Systems and techniques are provided for implementing multiprotocol label switching (MPLS) header extensions. In some examples, a method can include, receiving, by a router of a MPLS network, a data packet. In some aspects, the method can include adding, by the router of the MPLS network, at least one entry to an MPLS stack of the data packet, wherein the at least one entry includes an MPLS extension indicator (MEI) that is associated with at least one of an in-stack extension header presence indicator (IPI) and a bottom-of-stack extension header presence indicator (BPI). In some examples, the method can include adding, based on the IPI and the BPI, at least one of an in-stack extension header and a bottom-of-stack extension header to the MPLS stack of the data packet.
Abstract:
In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.
Abstract:
Techniques are provided to programming network analytics processing in virtual and physical network devices, useful for software-defined networking (SDN). A controller, e.g., a so-called SDN controller, is configured to identify a control-plane or data-plane flow originating, terminating or transiting a physical or virtual network element. The controller generates one or more network analytics processing actions to be performed by the physical or virtual network element based on inspection of traffic by the physical or virtual network element. The controller forms or generates an inspect/apply-action message containing information identifying the control-plane or data-plane flow for inspection and the one or more network analytics processing actions to be performed. The inspect/apply-action message is sent to the physical or virtual network element.