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-rw-r--r--docs/configuration/system/flow-accounting.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/configuration/system/flow-accounting.rst b/docs/configuration/system/flow-accounting.rst
index 30d6fc4d..801ddae6 100644
--- a/docs/configuration/system/flow-accounting.rst
+++ b/docs/configuration/system/flow-accounting.rst
@@ -42,6 +42,10 @@ exported.
Configuration
=============
+.. warning:: Using NetFlow on routers with high traffic levels may lead to
+ high CPU usage and may affect the router's performance. In such cases,
+ consider using sFlow instead.
+
In order for flow accounting information to be collected and displayed for an
interface, the interface must be configured for flow accounting.