Cisco Technology, Inc.

Juniper Networks, Inc.

Oracle International Corporation

Saurabh Kumar Agarwal

Saiprasad Reddy Muchala

Manoj Narayan

Harshad Bhaskar Nakil

Rajashekar Reddy

Ankur Bhargava

Rahul Kachalia

Megh Bhatt

Sai Ganesh Sitharaman

Shreyas Vinayakumar

Ayaskant Pani

Sarat Kamisetty

Sundararaju Veeraiah

Banashankar Veerad

Srinivas Tatikonda

Aleks Seovic

Kanishka Sharad Joshi

Meghal Bharat Gosalia

Shankar Ramanathan

Kumaran Narayanan

Jinsu Choi

Siva Madasamy

Abhiman Yashpala Karkera

Soumya Kailasa

Aparna Adhav

Kalash Nainwal

Siddharth Rampura Chandraprabhuraju

Techniques for performing NAT operations to send packets between networks are described. In an example, a network device receives a packet that comprises a header. The header indicates a source address of a first computing resource in a first network and a destination address of a second computing resource in a second network. The network device determines a pool of identifiers allocated for the first network and the second computing resource and identifies a packet flow based on the header. The network device also determines that no identifier from the pool of identifiers has been allocated for the packet flow and determines an identifier available to allocate for the packet flow from the pool of identifiers. The network device performs a NAT operation on the packet based on the identifier.

Network address translation between networks

Techniques discussed herein are directed to identifying health assessment data of a set of computing instances of a distributed computing system. The health assessment data may be collected from the computing instances and stored in a first distributed cache. When a request for health assessment data for one or more computing instances is received, the health assessment data may be retrieved from the first distributed cache, provided to the requesting entity, and stored in a second distributed cache. A subsequent request may cause new health assessment data to be retrieved from the first distributed cache and compared to the stored data of the second distributed cache. Changes in the health assessment data may be identified and data indicating those changes may be provided in response to the subsequent request. One or more remedial actions may be performed in response to the health assessment data obtained.

Techniques for managing distributed computing components

Systems, methods, and computer-readable media for implementing roaming services utilizing zero-configuration networking over a wide area network. Disclosed are systems, methods, and computer-readable storage media for implementing zero-configuration networking over a wide area network by utilizing agents, application programming interfaces (API), and a controller. The controller can implement policies for communication between the agents and APIs, enabling zero-configuration network.

Systems and methods for enabling inter-agent multicast domain name system client roaming in wide area network

Systems, methods, and computer-readable media for implementing local and wide network suppression of query requests in zero-configuration networking. Disclosed are systems, methods, and computer-readable storage media for implementing suppression of query packets zero-configuration networking over local and wide networks by utilizing agents, application programming interfaces (API), and a controller. The suppression can be determined based on two time periods, a processing period and a suppression period.

Systems and methods for multicast domain name system redundant query suppression

Systems, methods, and non-transitory computer-readable storage media for recovering from a partial failure of a virtual port chain (vPC) domain. The first and second vPC peers may be paired to create a vPC having a virtual address. An endpoint host may communicate with a network via the virtual port channel. The system may detect that the first virtual port channel peer is down. During or after the first vPC reboots, the reachability cost for the first vPC with regards to the virtual address can be set to an inflated value. The first vPC peer may also delay its bring up time while it synchronizes its vPC state information with the second vPC peer. The second vPC can continue to advertise the association between the endpoint host and the virtual address. Upon completion of the synchronization, the first vPC peer may bring up the link and restore the reachability cost.

Recovering from virtual port channel peer failure

Techniques for user-based service discovery in a network are described. In one embodiment, a method includes receiving, at a controller, a query to discover advertised services from a user device from a local area network. The method includes determining one or more advertised services in response to the query from the user device and determining a service discovery gateway agent for the local area network in communication with the user device. A query response that includes the one or more advertised services determined in response to the query is transmitted to the service discovery gateway agent. The service discovery gateway agent is configured to receive the query response and transmit the one or more advertised services to the user device via a Layer 2 unicast transmission.

User based mDNS service discovery

Systems, methods, and computer-readable media for implementing zero-configuration networking over a wide area network. Disclosed are systems, methods, and computer-readable storage media for implementing zero-configuration networking over a wire area network by utilizing agents, application programming interfaces (API), and a controller. The controller can implement polices for communication between the agents and APIs, enabling zero-configuration network

Systems and methods for enabling wide area multicast domain name system

Systems, methods, and computer-readable media for implementing zero-configuration networking over a wide area network. Disclosed are systems, methods, and computer-readable storage media for implementing zero-configuration networking over a wire area network by utilizing agents, application programming interfaces (API), and a controller. The controller can implement polices for communication between the agents and APIs, enabling zero-configuration network.

System and method for wide area zero-configuration network auto configuration

A virtual device includes multiple devices connected to operate as a single device. A first one of the devices is configured to determine that the first device connects to a second one of the devices via a first link; identify a second link; determine that the second link connects the first device to the second device; and automatically aggregate the first link and the second link to form a link aggregation with the second device based on determining that the first device connects to the second device via both the first and second links. The first device is further configured to transmit packets to the second device via the first and second links of the link aggregation.

Automatic aggregation of inter-device ports/links in a virtual device

A method performed by network devices that includes operating in a normal mode, where the network devices form a virtual chassis that corresponds to a single logical network device; detecting when a failure within the virtual chassis occurs; executing a splitting process to form one or more new virtual chassis in correspondence to the failure; determining whether one of the one or more new virtual chassis operates as a functioning virtual chassis based on whether at least one of a set of criteria is satisfied, where the functioning virtual chassis operates according to resources configured for the virtual chassis; and operating as a nonfunctioning virtual chassis when it is determined that the one of the one or more virtual chassis does not satisfy the at least one of the set of criteria, where the nonfunctioning virtual chassis operates in a pass-through mode.

Network disruption prevention when virtual chassis system undergoes splits and merges

Growing community of inventors

San Jose, CA, United States of America

Saurabh Kumar Agarwal