1A-201_SmartNIC Architecture for Distributed Services at the Network Edge-Pensando.PDF

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1、SmartNIC Architecture for Distributed Services at the Network EdgeMario BaldiFellowPensando Systems,Inc.San Jose,CA April 26-28,2022San Jose,CA April 26-28,2022Data Center ServicesNetworkNAT,load balancing,overlay(VxLAN,GENEVE)SecurityFirewall,IDS,IPSStorageShared disks,disaggregated storageObservab

2、ilityTelemetry,packet captureSan Jose,CA April 26-28,2022The Traditional Approach(Virtual)appliancesPossibly embedded in switchesPossibly executed in hostsNetwork Function Virtualization(NFV)Topology design implicationsTraffic routing and stitchingSan Jose,CA April 26-28,2022N-S TrafficSingle point

3、of entrance/exitFits well to appliance solution InternetSan Jose,CA April 26-28,2022E-W Traffic90%of data center traffic according to some estimatesDoes not fit well to appliance solutionTraffic tromboningSan Jose,CA April 26-28,2022Distributed Services ApproachOptimal,unchanged routingNo additional

4、 traffic loadSan Jose,CA April 26-28,2022Where can Services be Implemented?Network nodesSwitchesRoutersEnd systemsSan Jose,CA April 26-28,2022Challenges Network NodesDeal with very large volumes of trafficShort time to execute processingDesigned for forwarding packetsSimple,fixed processing(ASIC)Do

5、P4-based switches offer an opportunity?ProgrammableHardware performanceSan Jose,CA April 26-28,2022Challenges-HostsAgents consume host CPUProblematic to support many operating systemsProblematic to handle updates and agent versionsSan Jose,CA April 26-28,2022Where should distributed services run?The

6、 network edge(hosts)is a good candidate Consistent scale out modelSoftware execution takes resources from paying workloadsProgrammable hardware on a card11 Network interface card and ToR are good candidates Needed anyway By nature on the path of trafficSan Jose,CA April 26-28,2022P4 Programmable Pro