X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=vswitchd%2Fvswitch.xml;h=a3518130f1fe204aaed90a6cf0adc79bf487e2c3;hb=12eb035b810ff9d537d6ff9f1eb8ad5564c1f644;hp=5aec270ad8e3b2721327d5067b85b40e4365e49f;hpb=6dc5374435cc25bc4051b27bd52635e609a8872a;p=sliver-openvswitch.git

diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 5aec270ad..a3518130f 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -72,6 +72,22 @@
         host as displayed by <code>xe host-list</code>.
       </column>
 
+      <column name="other_config" key="stats-update-interval"
+              type='{"type": "integer", "minInteger": 5000}'>
+        <p>
+          Interval for updating statistics to the database, in milliseconds.
+          This option will affect the update of the <code>statistics</code>
+          column in the following tables: <code>Port</code>, <code>Interface
+          </code>, <code>Mirror</code>.
+        </p>
+        <p>
+          Default value is 5000 ms.
+        </p>
+        <p>
+          Getting statistics more frequently can be achieved via OpenFlow.
+        </p>
+      </column>
+
       <column name="other_config" key="flow-restore-wait"
               type='{"type": "boolean"}'>
         <p>
@@ -1211,7 +1227,9 @@
 
     <group title="Port Statistics">
       <p>
-        Key-value pairs that report port statistics.
+        Key-value pairs that report port statistics.  The update period
+        is controlled by <ref column="other_config"
+        key="stats-update-interval"/> in the <code>Open_vSwitch</code> table.
       </p>
       <group title="Statistics: STP transmit and receive counters">
         <column name="statistics" key="stp_tx_count">
@@ -1769,12 +1787,14 @@
     <group title="Statistics">
       <p>
         Key-value pairs that report interface statistics.  The current
-        implementation updates these counters periodically.  Future
-        implementations may update them when an interface is created, when they
-        are queried (e.g. using an OVSDB <code>select</code> operation), and
-        just before an interface is deleted due to virtual interface hot-unplug
-        or VM shutdown, and perhaps at other times, but not on any regular
-        periodic basis.
+        implementation updates these counters periodically.  The update period
+        is controlled by <ref column="other_config"
+        key="stats-update-interval"/> in the <code>Open_vSwitch</code> table.
+        Future implementations may update them when an interface is created,
+        when they are queried (e.g. using an OVSDB <code>select</code>
+        operation), and just before an interface is deleted due to virtual
+        interface hot-unplug or VM shutdown, and perhaps at other times, but
+        not on any regular periodic basis.
       </p>
       <p>
         These are the same statistics reported by OpenFlow in its <code>struct
@@ -1968,10 +1988,13 @@
 	</column>
 
 	<column name="bfd" key="forwarding_if_rx" type='{"type": "boolean"}'>
-          True to consider the interface capable of packet I/O as long as it
-          continues to receive any packets (not just BFD packets).  This
-          prevents link congestion that causes consecutive BFD control packets
-          to be lost from marking the interface down.
+          When <code>true</code>, traffic received on the
+          <ref table="Interface"/> is used to indicate the capability of packet
+          I/O.  BFD control packets are still transmitted and received.  At
+          least one BFD control packet must be received every 100 * <ref
+          column="bfd" key="min_rx"/> amount of time.  Otherwise, even if
+          traffic are received, the <ref column="bfd" key="forwarding"/>
+          will be <code>false</code>.
 	</column>
 
 	<column name="bfd" key="cpath_down" type='{"type": "boolean"}'>
@@ -2231,9 +2254,10 @@
           <ref column="other_config" key="cfm_extended"/> is true, the CFM
           module operates in demand mode.  When in demand mode, traffic
           received on the <ref table="Interface"/> is used to indicate
-          liveness.  CCMs are still transmitted and received, but if the
-          <ref table="Interface"/> is receiving traffic, their absence does not
-          cause a connectivity fault.
+          liveness.  CCMs are still transmitted and received.  At least one
+          CCM must be received every 100 * <ref column="other_config"
+          key="cfm_interval"/> amount of time.  Otherwise, even if traffic
+          are received, the CFM module will raise the connectivity fault.
         </p>
 
         <p>
@@ -2894,7 +2918,9 @@
 
     <group title="Statistics: Mirror counters">
       <p>
-        Key-value pairs that report mirror statistics.
+        Key-value pairs that report mirror statistics.  The update period
+        is controlled by <ref column="other_config"
+        key="stats-update-interval"/> in the <code>Open_vSwitch</code> table.
       </p>
       <column name="statistics" key="tx_packets">
         Number of packets transmitted through this mirror.