This article answers the question whether IPFIX is supported on both input and output Abstracted Fabric (AF) interfaces in a node-slicing environment.

IPFIX active flow monitoring is implemented on the Packet Forwarding Engine. It also supports AF interfaces in a node-slicing environment.

Configuration example for output direction:

labroot@router_re0# show services | display set
set services flow-monitoring version-ipfix template v4-ipfix-template flow-active-timeout 60
set services flow-monitoring version-ipfix template v4-ipfix-template flow-inactive-timeout 60
set services flow-monitoring version-ipfix template v4-ipfix-template template-refresh-rate packets 4800
set services flow-monitoring version-ipfix template v4-ipfix-template template-refresh-rate seconds 600
set services flow-monitoring version-ipfix template v4-ipfix-template option-refresh-rate packets 4800
set services flow-monitoring version-ipfix template v4-ipfix-template option-refresh-rate seconds 600
set services flow-monitoring version-ipfix template v4-ipfix-template ipv4-template
 
set chassis fpc 2 sampling-instance inline-jflow-instance
set chassis fpc 2 inline-services flow-table-size ipv4-flow-table-size 5
 
labroot@router_re0# show interfaces af0 | display set
set interfaces af0 unit 0 family inet filter output cflow
set interfaces af0 unit 0 family inet address 10.10.10.2/2
 
labroot@router_re0# show firewall | display set
set firewall family inet filter cflow term 1 then count CFLOW-SAMPLE
set firewall family inet filter cflow term 1 then syslog
set firewall family inet filter cflow term 1 then sample
set firewall family inet filter cflow term 1 then accept

Verification

labroot@router_re0# run show services accounting flow inline-jflow fpc-slot 2   
  Flow information
    FPC Slot: 2
    Flow Packets: 31320, Flow Bytes: 3445200
    Active Flows: 1, Total Flows: 1
    Flows Exported: 11, Flow Packets Exported: 0
    Flows Inactive Timed Out: 0, Flows Active Timed Out: 0
    Total Flow Insert Count: 1

IPFIX can be applied in the input direction in the same way as shown above. An AF interface in a node slicing environment can, therefore, use IPFIX in both input and output direction as a normal interface would.