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-rw-r--r--docs/gettingstarted/users/configuring/startup.rst14
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/gettingstarted/users/configuring/startup.rst b/docs/gettingstarted/users/configuring/startup.rst
index afac8b26734..f80d55c03df 100644
--- a/docs/gettingstarted/users/configuring/startup.rst
+++ b/docs/gettingstarted/users/configuring/startup.rst
@@ -1044,6 +1044,20 @@ a random, non-static entry is deleted. Defaults to 65535 entries.
max-cache-size 65535
+
+ethernet Section
+-----------------
+
+default-mtu <n>
+^^^^^^^^^^^^^^^
+
+Specifies the default MTU size for Ethernet interfaces. Must be in
+the range of 64-9000. The default is 9000.
+
+.. code-block:: console
+
+ default-mtu 1500
+
heapsize Section
-----------------