fw: Add ASF strategy parameters n-silent-timeouts & probing-interval

refs: #4193

Change-Id: I9572425a2fdcbf67b9886c2a5b6b50a10a0856e2
diff --git a/docs/manpages/nfd-asf-strategy.rst b/docs/manpages/nfd-asf-strategy.rst
new file mode 100644
index 0000000..5a7d785
--- /dev/null
+++ b/docs/manpages/nfd-asf-strategy.rst
@@ -0,0 +1,46 @@
+nfd-asf-strategy
+================
+
+SYNOPSIS
+--------
+| nfdc strategy set prefix <PREFIX> strategy /localhost/nfd/strategy/asf/%FD%02[/probing-interval~<PROBING-INTERVAL>][/n-silent-timeouts~<N-SILENT-TIMEOUTS>]
+
+DESCRIPTION
+-----------
+
+ASF is an Adaptive Smoothed RTT-based Forwarding Strategy that chooses the best next hop based on SRTT measurement, and also periodically probes other next hops to learn their RTTs.
+
+OPTIONS
+-------
+<PROBING-INTERVAL>
+    Tells ASF how often to send a probe to determine alternative paths.
+    The value is specified in milliseconds (non-negative integer)
+    Lower value means high overhead but faster reaction.
+    Default value is 1 minute and minimum value is 1 second.
+    It is optional to specify probing-interval.
+
+<N-SILENT-TIMEOUTS>
+    ASF switches immediately to another appropriate face (if available) upon timeout.
+    This behavior may be too sensitive for application use and appropriate only for link
+    failures and not transient timeouts. So this parameter makes ASF switch paths
+    only after it has encountered the specified number of timeouts (non-negative integer).
+    Default and minimum value is 0 i.e. switch immediately.
+    It is optional to specify n-silent-timeouts.
+
+EXAMPLES
+--------
+nfdc strategy set prefix /ndn strategy /localhost/nfd/strategy/asf
+    Use the default values.
+
+nfdc strategy set prefix /ndn strategy /localhost/nfd/strategy/asf/%FD%03/probing-interval~30000
+    Set probing interval as 30 seconds.
+
+nfdc strategy set prefix /ndn strategy /localhost/nfd/strategy/asf/%FD%03/n-silent-timeouts~5
+    Set n-silent-timeouts as 5.
+
+nfdc strategy set prefix /ndn strategy /localhost/nfd/strategy/asf/%FD%03/probing-interval~30000/n-silent-timeouts~5
+    Set probing interval as 30 seconds and n-silent-timeouts as 5.
+
+SEE ALSO
+--------
+nfdc(1), nfdc-strategy(1)
\ No newline at end of file
diff --git a/docs/manpages/nfdc-strategy.rst b/docs/manpages/nfdc-strategy.rst
index 20e33f1..a9f6886 100644
--- a/docs/manpages/nfdc-strategy.rst
+++ b/docs/manpages/nfdc-strategy.rst
@@ -71,4 +71,4 @@
 
 SEE ALSO
 --------
-nfd(1), nfdc(1)
+nfd(1), nfdc(1), nfd-asf-strategy(7)