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-rw-r--r--docs/configuration/interfaces/pppoe.rst13
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/configuration/interfaces/pppoe.rst b/docs/configuration/interfaces/pppoe.rst
index ca7d49ef..fafab684 100644
--- a/docs/configuration/interfaces/pppoe.rst
+++ b/docs/configuration/interfaces/pppoe.rst
@@ -134,6 +134,19 @@ PPPoE options
will be removed when the interface is torn down - even manually installed
static interface-routes.
+.. cfgcmd:: set interfaces pppoe <interface> mru <mru>
+
+ Set the :abbr:`MRU (Maximum Receive Unit)` to `mru`. PPPd will ask the peer to
+ send packets of no more than `mru` bytes. The value of `mru` must be between 128
+ and 16384.
+
+ A value of 296 works well on very slow links (40 bytes for TCP/IP header + 256
+ bytes of data).
+
+ The default is 1492.
+
+ .. note:: When using the IPv6 protocol, MRU must be at least 1280 bytes.
+
.. cfgcmd:: set interfaces pppoe <interface> idle-timeout <time>
Use this command to set the idle timeout interval to be used with on-demand