Cisco Technology, Inc.

Ramesh Sivakolundu

Ayan Banerjee

Sagar Borikar

Anant Thakar

Chakradhar Kar

Varagur Chandrasekaran

Harsha Bharadwaj

Dennis Kai-Fat Fong

Gary S Muntz

Kenneth H Potter

Guy Fedorkow

Ravikanth Nasika

Saikat Bhattacharya

Rajesh Sharma

Maruthingendra P Rachepalli

A method of congestion mitigation may include determining whether a host is sending a read command or a write command to an NVMe controller, and in response to a determination that the host is sending the read command, transmitting the read command via a first transmission control protocol (TCP) connection between the host and the NVMe controller. The method may further include in response to a determination that the host is sending the write command, transmitting the write command via a second TCP connection between the host and the NVMe controller.

Storage aware congestion management

This disclosure describes techniques for performing Internet Protocol (IP) switch-based Storage Area Networks (SANS) analytics management. An example method is performed by an IP switch. The method includes identifying information associated with Non-Volatile Memory express (NVMe)/Transport Control Protocol (TCP) Protocol Data Units (PDUs) examined from an Application-Specific Integrated Circuit (ASIC) data path. The information can be stored based on the NVMe/TCP PDUs being included in separate corresponding TCP data segments, according to a handshake protocol. Alternatively or additionally, the information can be stored based on a metadata header being received as a first PDU in a TCP segment. The NVMe/TCP PDUs can be used to extract the information to populate connection and IO tables inside an ASIC. The storage I/O metrics may then be available from the tables.

Internet protocol (IP) switch-based analytics management

Techniques for sending Compute Express Link (CXL) packets over Ethernet (CXL-E) in a composable data center that may include disaggregated, composable servers. The techniques may include receiving, from a first server device, a request to bind the first server device with a multiple logical device (MLD) appliance. Based at least in part on the request, a first CXL-E connection may be established for the first server device to export a computing resource to the MLD appliance. The techniques may also include receiving, from the MLD appliance, an indication that the computing resource is available, and receiving, from a second server device, a second request for the computing resource. Based at least in part on the second request, a second CXL-E connection may be established for the second server device to consume or otherwise utilize the computing resource of the first server device via the MLD appliance.

Compute express link over ethernet in composable data centers

Unlocking computing resources for decomposable data centers

Techniques to eliminate duplicate packets from a stream of packets. A method includes receiving a packet, hashing elements of the packet to obtain a packet partial signature, generating an action data value by appending, to the packet partial signature, unhashed packet information, accessing a hash store location in a hash store based on the action data value, determining, based on data stored at the hash store location, whether the packet is a duplicate of a previously-received packet, and based on whether the packet is a duplicate of a previously-received packet, one of allowing and preventing one of the packet and a copy of the packet to reach a downstream network node.

Packet deduplication

Methods and apparatus for managing exchanges in a network device of a storage area network are disclosed. In a first 'host-side' exchange initiated by an initiator and between the initiator and the network device, one or more frames are received from an initiator and/or sent to the initiator. At least one of the frames pertains to access of a virtual storage location of a virtual storage unit representing one or more physical storage locations on one or more physical storage units of the storage area network. One or more 'disk-side' exchanges between the network device and one or more targets (i.e., physical storage units) are initiated in response to the first exchange. In the disk-side exchanges, one or more frames are sent from the network device to one of the targets and/or received from the target. Exchange information for the host-side exchange and the associated disk-side exchanges are updated throughout the exchanges.

Methods and apparatus for implementing exchange management for virtualization of storage within a storage area network

An aggregation router architecture comprises a plurality of line cards coupled to at least one performance routing engine (PRE) via an interconnect system. The line cards include input cards having input ports coupled to subscribers and at least one trunk card configured to aggregate packets received from the subscriber inputs over at least one output port. The PRE performs packet forwarding and routing operations, along with quality of service functions for the packets received from each input line card over the interconnect system. The interconnect system comprises a plurality of high-speed unidirectional (i.e., point-to-point) links coupling the PRE to each line card. The point-to-point links couple the line cards to a novel logic circuit of the PRE that is configured to interface the line cards to a packet buffer and a forwarding engine of the PRE.

Growing community of inventors

Saratoga, CA, United States of America

Ramesh Sivakolundu