Configuration example

Large Scale NAT44 Flow Logging with format2:

1. A collector node along with other local transport parameters must be defined through an IPFIX export policy.

   
   *A:BNG1>config>service>ipfix# info detail 
   ----------------------------------------------
               ipfix-export-policy "flow-logging" create
                   no description
                   template-format format2
                   collector router "Base" ip 192.168.115.1 create
                       mtu 1500
                       source-address 192.0.2.2
                       template-refresh-timeout min 5 
                       no shutdown
                   exit
               exit
   

   To export flow records using UDP stream, the BB-ISA card must be configured with an appropriate IPv4 address within a designated VPRN. This address (/32) acts as the source for sending all IPFIX records and is shared by all ISA.

2. After the IPFIX export policy is defined, it must be applied within the NAT policy:

   *A:BNG1>config>service>nat#     info 
   ----------------------------------------------
               nat-policy "mnp" create
                   pool "mnp" router Base
                   ipfix-export-policy "flow-logging"
               exit
   

Flow creation and flow deletion templates for format2, as captured in Wireshark, are shown in Figure: Format2 templates.

IPFIX flow creation data set, as captured in Wireshark, is shown in Figure: Flow creation data set.

IPFIX flow destruction data set, as captured in Wireshark, is shown in Figure: Flow destruction.