Outputting Flexible Flows

Procedure

1. Run system-view

   The system view is displayed.

2. Run ipv6 netstream export version 9 [ origin-as | peer-as ] [ bgp-nexthop ]

   The output version number and AS option of flexible flow packets are specified.

3. (Optional) Configure NetStream packets to carry the flow sequence field.
   1. Run slot slot-id

      The view of the slot in which the interface board for NetStream sampling resides is displayed.

   2. Run ip netstream export sequence-mode flow

      The NetStream export sequence mode is set to flow.

      

      The command applies to the V9 format only.

   3. Run quit

      The system view is displayed.

4. Run ipv6 netstream apply record record-name

   Flexible flows are applied in the system view.

   Flexible flow packets can be output only in the V9 format. If the ipv6 netstream export version command is run in the system view to specify the IPFIX packet output format, the ipv6 netstream apply record command does not take effect.

5. (Optional) Run ipv6 netstream export template timeout-rate timeout-interval

   The interval at which the template for outputting flexible flows in the V9 format is updated.

6. Run ipv6 netstream export source { ip-address | ipv6 ipv6-address } [ port ]

   The source IP address and source port are specified for flexible flows.

7. Specify the destination IP address and UDP port number of the peer NSC for NetStream flexible flows in the system or slot view.

   • In the system view:

     Run ipv6 netstream export host [ ipv6 ] ip-address port [ vpn-instance vpn-instance-name ] [ version { 9 | ipfix } ] [ dscp dscp-value ]

     The destination IP address and the UDP port number for traffic statistics export are specified.

   • In the slot view:

     1. Run slot slot-id

        The view of the slot in which the interface board for NetStream sampling resides is displayed.

     2. Run ipv6 netstream export host [ ipv6 ] ip-address port [ vpn-instancevpn-instance-name ] [ version { 9 | ipfix } ] [ dscpdscp-value ]

        The destination IP address and the UDP port number for traffic statistics export are specified.

     3. Run quit

        Return to the system view.

8. (Optional) Set parameters for aging flexible flows as needed.
   • Run ipv6 netstream aggregation timeout active { active-interval | interval-second active-interval-second }

     The active aging time is set for NetStream flexible flows.

   • Run ipv6 netstream aggregation timeout inactive inactive-interval

     The inactive aging time is set for NetStream flexible flows.

9. Run commit

   The configuration is committed.