ospfd: Fix opaque LSA refresh interval and modify LSA cmds.

The configured OSPF refresh interval was not being used for opaque LSA (it always used the constant). Also, modified the timers lsa min-arrival command to have a maximum of 5000 msecs as well as providing a path for backward command compatibility.

Added missing user documentation for both timers lsa min-arrival and timers throttle lsa all.

Signed-off-by: Acee Lindem <acee@lindem.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/doc/user/ospfd.rst b/doc/user/ospfd.rst
index b80adba7f..b2571dfd7 100644
--- a/doc/user/ospfd.rst
+++ b/doc/user/ospfd.rst
@@ -200,6 +200,44 @@ To start OSPF process you have to specify the OSPF router.
    This command supersedes the *timers spf* command in previous FRR
    releases.
 
+.. clicmd:: timers throttle lsa all (0-5000)
+
+   This command sets the minumum interval between originations of the
+   same LSA or the `minimum LSA refresh interval`. The time is specified
+   in milliseconds and the default is 5 seconds (5000 milliseconds) consistent
+   with the architectual constant MinLSInterval specified in Appendix D of
+   RFC 2328. When a self-originated LSA needs to be reoriginated, it may be
+   delayed for up to this interval.
+
+   .. code-block:: frr
+
+      router ospf
+       timers throttle lsa all 1000
+
+
+   In this example, the `mininum LSA refresh interval` is set to 1000ms. This
+   command reduces the delay between successive originations of a self-originated
+   LSA from 5000 milliseconds to 1000 milliseconds.
+
+.. clicmd:: timers lsa min-arrival (0-5000)
+
+   This command sets the minumum interval between receptions of instances of
+   the same LSA or the `minimum LSA arrival interval`. The time is specified in
+   milliseconds and the default is 1 second (1000 milliseconds) consistent with
+   the architectual constant MinLSArrival specified in Appendix D of RFC 2328. If a
+   newer instance of the same LSA is received in less than this interval, it is
+   ignored.
+
+   .. code-block:: frr
+
+      router ospf
+       timers lsa min-arrival 50
+
+
+   In this example, the `minimum LSA arrival interval` is set to 50ms. This
+   command reduces the minimum interval required between instances of the same
+   LSA from 1000 milliseconds to 50 milliseconds.
+
 .. clicmd:: max-metric router-lsa [on-startup (5-86400)|on-shutdown (5-100)]
 
 .. clicmd:: max-metric router-lsa administrative