Non-Aggregated FlowsExport Version 5 or 9ġ11111 2004 Cisco Systems, Inc. Protocol-Port Aggregation Scheme BecomesĪggregated FlowsExport Version 8 or 9ExportPacket SrcPortPktsFlgsTOSDstlPadd ProtocolDstlfSrclPaddSrclfĮ.g. prefix maskġ01010 2004 Cisco Systems, Inc. UDP Export Packets Approximately 1500 bytes Typically contain 20-50įlow records Sent more frequently if trafficĩ99 2004 Cisco Systems, Inc.
Active timer when using netflow series#
Returns the subinterface information in the flow recordsĬisco Catalyst 6500 Series and Cisco 7600 Series enables NetFlow on all interfaces by defaultĨ88 2004 Cisco Systems, Inc.
Active timer when using netflow software#
Supported on all interfaces and Cisco IOS Software platforms Works with Cisco Express Forwarding or fast switchingNot a switching path All rights reserved.NMS-20329728_05_2004_c2Īccounts for both transit traffic and traffic destined for the router Internet access monitoring (protocol distribution, where traffic is going/coming)Ħ66 2004 Cisco Systems, Inc. NetFlow is now the primary network accounting technology in the industryĪnswers questions regarding IP traffic: who, what, where, when, and howĥ55 2004 Cisco Systems, Inc. The value of information in the cache was a secondary discovery All rights reserved.NMS-20329728_05_2004_c2ĭeveloped by Darren Kerr and Barry Bruins at Cisco Systems in 1996 Introduction Hardware Versions Accounting and AnalysisMPLS Environment Accounting and AnalysisBGP and Autonomous Systems Analysis and AttackMulticast Options AttackSecurity Features and Applications ScalingFeatures and Options ExportCollector, NAM and Partners Evolving NetFlowIPv6 and Deploymentģ33 2004 Cisco Systems, Inc. NETFLOW FOR ACCOUNTING, ANALYSIS AND ATTACKĢ22 2004 Cisco Systems, Inc. These command mean to take note on devices that are sending to MC group 239.100.100.1 (MC is UDP) as top 2 talkers, their traffic is sorted by packets.Įnable netflow on fa4 and capture receiving traffic (inbound).Įnable netflow on Vlan100 and capture receiving traffic (inbound). Top talkers are devices that generate the most traffic. That time I set my Cisco router flow active timer at 10minutes. Ip flow-export destination 192.168.100.254 65000 PRTG gave a warning about received flow data was lost due to timer mismatch. My Cisco router needs to configure the same timeout as well:įrom the screenshot I have set my Netflow receiver (PRTG) to be 192.168.100.254 source udp port 65000, in Cisco router I need to configure netflow export destination: Netflow active timer must match Cisco's active timer otherwise received data will be lost.įrom this screenshot, I set the active timeout to be 5 minutes. Netflow timeout active timer must match between flow source and destination Statistics captured by netflow for inbound traffic on fa4 and vlan 100, fa4 was the MC source.
I changed it to version 5 as PRTG support only version 5 and 9 format. Default is version 1 when I first turned netflow on. Receiving netflow version 5 format data from R871.Īs confirmed with Cisco feature navigator, there’s no netflow for 3560 not even version 1…Īlthough this router is EoL, it has netflow version 1, 5 and 9.
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