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US 2019/0320047 A1Published application
Transmitting network overlay information in a service function chain
AssigneeCisco Technology, Inc.
InventorsSebastian Jeuk, Gonzalo Salgueiro
Life of this patent
Estimating the term…
Abstract
A packet is received at a device configured to provide a service function within a network service chain. A network overlay and/or segmentation identifier is extracted from a header of the packet. The service function is applied to the packet according to policies specific to a network overlay and/or segmentation identified in the network overlay and/or segmentation identifier.
Claims20
A method comprising:
- receiving, from a first network implementing a network overlay or network segmentation, a packet at an entry node of a chain of network nodes providing network services;
- extracting data identifying the network overlay or network segmentation from network overlay or network segmentation encapsulation of the packet;
- stripping the network overlay or network segmentation encapsulation from the packet;
- generating a header configured to route the packet through the chain of network nodes, the header comprising the data identifying the network overlay or network segmentation for re-creation of the network overlay or network segmentation encapsulation upon exiting from the chain of network nodes;
- applying the header to the packet;
- and
- transmitting the packet through the chain of network nodes towards an exit node of the chain of network nodes.
4 more elements
A method comprising:
- receiving, at an exit node of a chain of network nodes providing network services, a packet comprising a header configured to route the packet through the chain of network nodes, wherein the packet was received at the chain of network nodes from a first network implementing a network overlay or network segmentation;
- extracting data identifying the network overlay or network segmentation from the header;
- encapsulating the packet with encapsulation for the network overlay or network segmentation based upon the data identifying the network overlay or network segmentation;
- and
- transmitting the packet into a second network implementing the network overlay or network segmentation.
2 more elements
An apparatus comprising:
- one or more network interfaces configured to receive traffic from a first network implementing a network overlay or network segmentation, the traffic entering a chain of network nodes providing network services, and transmit the traffic through the chain of network nodes providing network services;
- and
- one or more processors, wherein the one or more processors are configured to:
- receive a packet via the one or more network interfaces;
- extract data identifying the network overlay or network segmentation from network overlay or network segmentation encapsulation of the packet;
- strip the network overlay or network segmentation encapsulation from the packet;
- generate a header configured to route the packet through the chain of network nodes, the header comprising the data identifying the network overlay or network segmentation for re-creation of the network overlay or network segmentation encapsulation upon exit from the chain of network nodes;
- apply the header to the packet;
- and
- transmit, via the one or more network interfaces, the packet through the chain of network nodes towards an exit node of the chain of network nodes.
7 more elements
Dependencies are inferred from the claim text.