If you have flexible network flow troubleshooting, the following guide may help you.

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    Cisco WS-C3850-24S (MIPS) processor (revision M0) with 853097K/6147K bytes of memory.

    I’m moving on to configuring NetFlow and some useful commands for troubleshooting NetFlow issues.

    Nexus Netflow 1000v 5.x Configuration

    The Nexus 1000v has a number of pre-installed 5″ data stream records:

  • Netflow IPv4 source inbound – NetFlow IPv4 legacy inbound
  • Netflow IPv4 native output – NetFlow IPv4 traditional output
  • Netflow Protocol-Port – scheme for combining protocols and ports
  • Layer 2 NetFlow Switched Input – Layer 2 Switched NetFlow Input
  • NetFlow-Original – legacy IPv4 NetFlow entry with original AS
  • To view the various fields that can be captured, enter the following command:
    show flow record netflow-original predefined-record-name

    Create A Proper Stream Entry In The Nexus 1000v (SKIP IF A PREDEFINED RECORDER IS USED):

  • Enable feature:

    Netflow Feature

  • Create the stream you are subscribed to by name:

    Stream entry name

  • (Optional) Give the set a description:

    description ddescription

  • Set the stream capture to one of the following:

    Matches the destination IPv4 address. Quick Notes: Netflow does not support mixing Datalink fields with other field types in an exact record.

  • IP – matches one of the following IP parameters:
    • Log
    • tos (enter service)
  • IPv4 – corresponds to one of the use cases:
    • Source address
    • destination address
  • Transport – matches one of the following transport options:
    • Destination port
    • Source port
  • Datalink: The data collected in their stream logs matches one of the following datalink options:
    • Mac home address
    • Mac Local Address
    • Ether type
    • VLAN
    • VXLAN
  • Specify a capture option to specify specific information to capture in a stream entry:

    Collect TCP transport flags Quick notes:

  • Counter: Collects important thread log information in one of the following formats:
    • Bytes: Collected in 32-bit counters only if actually specified64-bit counter.
    • Package: Assembled in 32-bit counters, a long 64-bit counter can certainly be specified
      Note. Cisco recommends using 64-bit counters in systems with data rates greater than 1 Gbps.
  • Timestamp sys-uptime: Records the system uptime for the first and last packet of the entire data stream.
  • TCP transport flags: Collects TCP transport flags with current packets.
  • Browse:
    Show transaction record name
  • Create Clock Exporter:

  • Create Flow Exporter:

    Flow Exporter name

  • (Optional) Enter a description:

    description description

  • Specify the destination IP address:
    destination ipv4-addr
  • Specify the IP address from which flow records will be sent to NetFlow Collector:
    troubleshooting flexible netflow

    source lc-exp ipv4-addr/mask

  • Specify the actual destination UDP port number that can communicate with the NetFlow collector:

    transport udp port-num

  • Specify NetFlow Version 9:

    Version 9

  • Indicate the electronic return timer associated with the following version 9 exporter and its value compared to the exporter statistics and the int tableinterface:

    option exporter-stats timeout secs

  • Set the template credential return timeout and value in seconds:

    Template data timeout in seconds

  • Check:
    Show data feed exporter name
  • Create An Appropriate Flow Monitor:

  • Create flow monitor by name:

    Flow monitor name

  • (Optional) Create a description for the pump monitor:

    Description Description

  • Add an existing exporter:

    exporter name

  • Add a beautiful existing feed dataset, or use a good pre-made dataset:

    Keep original data

  • Check:
    Show thread computer monitor names
  • Add Flow Monitor To Port Profile:

  • Enter this port profile configuration mode for a port profile named:

    port-profile [type ethernet] name

  • Apply flow monitor to port profile for inbound (in) or outbound (outbound) traffic:
    troubleshooting flexible netflow

    Enter the name of the IP flow monitor

  • Check:
    View Port Profile [Expand-Interface] [Name Name]
  • Troubleshooting Netflow On Nexus 1000v:

    • show flow interface – Display information next to NetFlow interfaces.

  • show flow monitor full name cache module num – Displays information about NetFlow flow monitors. Slightly different from statistics as the command also includes cached entries
  • thread machine name statistics module number – shows information about the thread monitoring data module.
  • Flexible Configuration Of Netflow IOS XE For 3.6E:

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  • I’ll talk about the ios-xe 3.6.4 setting that has been released since the last stable version of ISE 2.0+ and allows NetFlow to collect group security tags.

    The following are the requirements for Flexible NetFlow in IOS XE 3.6:

  • You need to customize the initial interface. If someone does not do this, the exporter will remain in a disabled state.
  • Download this fixer software and fix your PC today.

    Risoluzione Dei Problemi Del Flusso Di Rete Flessibile
    Probleemoplossing Flexibele Netflow
    Felsokning Av Flexibelt Natflode
    Rozwiazywanie Problemow Z Elastycznym Netflow
    유연한 Netflow 문제 해결
    Solucao De Problemas De Fluxo De Rede Flexivel
    Fehlerbehebung Bei Flexiblem Netflow
    Depannage De Netflow Flexible
    Solucion De Problemas De Flujo De Red Flexible
    Ustranenie Nepoladok Gibkogo Setevogo Potoka