Arista Networks, Inc.

Aparna Sushrut Karanjkar

Anuraag Mittal

Nitin Ravindra Karkhanis

Thejesh Ajjikariappla Panchappa

Rajesh Kumar Semwal

Srinivas Subramanian

Adam James Sweeney

Andre Pech

Gagandeep Singh Arneja

Chandrashekhar Appanna

Prateek Nigam

A network element is provided. The network element includes a tunneling endpoint having a virtual address. The tunneling endpoint is configured to receive an address resolution reply that has a destination MAC (media access control) address matching the virtual address of the tunneling endpoint and is from a network device in a first network that includes the tunneling endpoint. The tunneling endpoint is further configured to send the address resolution reply via an interconnect to a further tunneling endpoint in a further network. A method for address resolution in virtual extensible networks is also provided.

Address resolution in virtual extensible networks

A method and system for steering bidirectional network traffic to a same service device. Specifically, the disclosed method and system entail the maintaining and synchronization of link aggregation group (LAG) tables tied to a pair of LAG ports instantiated on a network element directly connected to a pair of peer linking service devices. Network traffic (i.e., MAC frames) arriving at the network element, from a first host and intended for a second host (e.g., indicative of a first direction of the network traffic), may be steered towards one of the pair of service devices based on hashing of information included in a received MAC frame in conjunction with the LAG table tied to the LAG port (of the pair of LAG ports) that which received the MAC frame.

Method and system for steering bidirectional network traffic to a same service device

A method and system for steering network traffic towards a service device. Specifically, the disclosed method and system entail the installation of multiple service devices around a network. Service policies are cloned across the multiple service devices, and further, each service device is assigned common virtual routing and bridging addresses. Using at least these common virtual routing and bridging addresses, intercept virtual tunnel end points (VTEPs) redirect or bridge network traffic to a service device.

Method and system for network traffic steering towards a service device

A method and system for inspecting unicast network traffic between end points residing within a same zone. Specifically, the method and system disclosed herein entail the provisioning of unique forward-service and reverse-service virtual network identifiers (VNIs), and corresponding virtual layer-2 (VL2) forward-service and reverse-service broadcast domains, respectively, to communications originating from and destined to intercept hosts.

Method and system for inspecting unicast network traffic between end points residing within a same zone

A method and system for inspecting cross-zone network traffic between end points residing within different zones. Specifically, the method and system disclosed herein entail the provisioning of unique forward-service and reverse-service virtual network identifiers (VNIs), and corresponding virtual layer-2 (VL2) forward-service and reverse-service broadcast domains, respectively, to communications originating from and destined to intercept hosts.

Method and system for cross-zone network traffic between different zones using virtual network identifiers and virtual layer-2 broadcast domains

A system and method for host discovery and tracking in a network. Specifically, the disclosed system and method entail maintaining bindings pertinent to the mapping of any host in the network, by way of their host IP address, to a respective virtual tunnel end point (VTEP). More specifically, these bindings may include: (i) a host IP address to host MAC address binding or mapping; and (ii) a host MAC address to VTEP IP address binding or mapping. Further, these bindings may be especially significant towards directing network traffic to a host over virtual layer-3 (L3) protocols.

Method and system for host discovery and tracking in a network using associations between hosts and tunnel end points

A method and system for inspecting broadcast network traffic between end points residing within a same zone. Specifically, the method and system disclosed herein entail the provisioning of unique forward-service and reverse-service virtual network identifiers (VNIs), and corresponding virtual layer-2 (VL2) forward-service and reverse-service broadcast domains, respectively, to communications originating from and destined to intercept hosts.

Method and system for inspecting broadcast network traffic between end points residing within a same zone

A method and apparatus to bring up a network controller in a network of multiple network elements is described. In an exemplary embodiment, the network controller receives an indication that the network controller is booting up. The network controller is coupled to a plurality of network elements in a network, where the network controller maintains a controller database that supports a network-wide service used by the plurality of network elements. The network controller further receives state information from the plurality of network elements. In addition, the network controller builds the controller database from the state information. Furthermore, the network controller sends updates from the controller database to each of the plurality of network elements, where each of the plurality of network elements incorporates these updates into a respective network element database and the network element database is used to perform the network-wide service.

System and method of a graceful reboot of a network controller

In general, embodiments of the disclosure relate to a method for handling media access control (MAC) frames. The method includes receiving, by a service virtual tunnel end point (VTEP) and from a source VTEP, a first virtual layer-3 (VL3) frame comprising a dedicated virtual network identifier (VNI), decapsulating the first VL3 frame to obtain a first media access control (MAC) frame comprising a dedicated virtual local area network (VLAN) tag, replacing, in the first MAC frame, the dedicated VLAN tag with an original VLAN tag, and bridging the first MAC frame to a service device directly connected to a first network element on which the service VTEP is executing.

Method and system for inspecting network traffic between end points of a zone

A method and apparatus of a device that monitors a link for a slow link flap event is described. In an exemplary embodiment, a device detects a link flap in a current time interval of a link that couples a pair of devices. In addition, the current time interval is one of a plurality of time intervals that are used to monitor the link for a slow link flap. Furthermore, a slow link flap event results from detecting a maximum number of link flap violations over the plurality of time intervals. The device additionally increments a number of detected link flaps for the current time interval. If the number of detected link flaps for the current time interval is greater than a maximum number of slow link flap violations, the device marks the current time interval as a possible slow link flap interval. In addition, if the total number of intervals among the current time interval and one or more preceding time intervals, which are marked as possible slow flap intervals, equals the maximum number of slow flap intervals, the device brings the link down.

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Fremont, CA, United States of America

Aparna Sushrut Karanjkar