PCIe-based host network accelerators (HNAS) for data center overlay network

A host network and accelerator technology, applied in the field of computer networks, can solve problems such as loss, high cost, and non-determinism

Active Publication Date: 2015-09-30
JUMIPER NETWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Proprietary switching fabrics can provide high performance, but can sometimes be more expensive, and in some cases can provide a single point of failure for the network
Off-the-shelf packet-based switching components can be cheaper, but can result in lossy, non-deterministic behavior

Method used

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  • PCIe-based host network accelerators (HNAS) for data center overlay network
  • PCIe-based host network accelerators (HNAS) for data center overlay network
  • PCIe-based host network accelerators (HNAS) for data center overlay network

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0151] Example 1. A removable Peripheral Component Interconnect Express (PCIe)-based host network accelerator comprising: a removable card configured for insertion into a slot of a server and having an IC for connecting to the server a PCIe bus interface to the / O bus; a physical network interface mounted on the card to connect to a switch fabric that provides connectionless, packet-based switching for packets over the physical network; and an integrated circuit located on the on the card, on a data path between the physical network interface and the PCIe bus interface, wherein the integrated circuit includes routing information configured to apply routing information for one or more virtual networks to the PCIe bus A hardware-based virtual router that routes packets between an interface and the I / O bus of the server.

example 2

[0152] Example 2. The removable PCIe-based host network accelerator of example 1, wherein the virtual router is configured to receive outgoing packets from the virtual machine over the I / O bus and extend constructing an outgoing tunnel packet, wherein the outgoing tunnel packet encapsulates the outgoing packet, and wherein the virtual router is configured to receive the incoming tunnel packet from the switch fabric through the physical network interface, An internal packet encapsulated within the incoming tunnel packet is extracted and routed to the virtual machine over the I / O bus according to routing information for the virtual network.

example 3

[0153] Example 3. The removable PCIe-based host network accelerator of example 2, wherein the integrated circuit further comprises: a plurality of outgoing queues for buffering the outgoing tunnel packets output by the virtual router; and a scheduler , the scheduler controls transmission of the outgoing tunnel packets from the virtual router to other host network accelerators via the switch fabric.

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Abstract

A high-performance, scalable and drop-free data center switch fabric and infrastructure is described. The data center switch fabric may leverage low cost, off-the-shelf packet-based switching components (e.g., IP over Ethernet (IPoE)) and overlay forwarding technologies rather than proprietary switch fabric. In one example, host network accelerators (HNAs) are positioned between servers (e.g., virtual machines or dedicated servers) of the data center and an IPoE core network that provides point-to-point connectivity between the servers. The HNAs are hardware devices that embed virtual routers on one or more integrated circuits, where the virtual router are configured to extend the one or more virtual networks to the virtual machines and to seamlessly transport packets over the switch fabric using an overlay network. In other words, the HNAs provide hardware-based, seamless access interfaces to overlay technologies used for communicating packet flows through the core switching network of the data center.

Description

[0001] Cross References to Applications [0002] This application claims the benefit of U.S. Provisional Application No. 61 / 973,045, filed March 31, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to computer networks, and more particularly to data centers providing virtual networks. Background technique [0004] In a typical cloud-based data center, a large collection of interconnected servers provides computing and / or storage capacity for executing various applications. For example, a data center may include a facility that hosts applications and services for subscribers, such as customers of the data center. A data center may, for example, host all infrastructure equipment, such as networking and storage systems, redundant power supplies, and environmental controls. In most data centers, clusters of storage systems and application servers are interconnected via a high-speed switching fabric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/713H04L12/801H04L12/46H04L12/863H04L45/586
CPCG06F13/4081H04L49/70G06F13/4221H04L12/4633G06F13/128H04L47/6215H04L12/4641G06F13/385
Inventor P·辛胡
Owner JUMIPER NETWORKS INC
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