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--- netflow:whyfnf [2025/02/28 15:47] – created veera
+++ netflow:whyfnf [2025/02/28 15:49] (current) – veera
@@ Line 52: / Line 52: @@
+<code ios>
 configure terminal
 interface range GigabitEthernet0/1 - 24
@@ Line 59: / Line 60: @@
 ip flow-export destination 192.0.2.1 2055
 exit
+</code>
@@ Line 67: / Line 69: @@
 When you enable traditional NetFlow v9 on a Cisco ASR router, the template fields typically include a variety of key and non-key fields. Here are some common fields that you might see in a NetFlow v9 template:
-Key Fields:
+**Key Fields**
-Source IP address
-Destination IP address
+  * Source IP address
+  * Destination IP address
+  * Source port
+  * Destination port
+  * Protocol
+  * Input interface
+  * Output interface
-Source port
+**Non-Key Fields**
-Destination port
+  * Packet count
+  * Byte count
+  * Flow start timestamp
+  * Flow end timestamp
+  * Source AS (Autonomous System)
+  * Destination AS
+  * Source mask
+  * Destination mask
+  * TCP flags
+  * Next hop IP address
-Protocol
-Input interface
+That should do it for most folks. Use FNF only if required !!
-Output interface
-Non-Key Fields:
-Packet count
-Byte count
-Flow start timestamp
-Flow end timestamp
-Source AS (Autonomous System)
-Destination AS
-Source mask
-Destination mask
-TCP flags
-Next hop IP address