ofproto-dpif: Do not mirror L2 multicast switch protocols to VLANs.

[sliver-openvswitch.git] / vswitchd / vswitch.xml

diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 7e58421..950aa89 100644 (file)
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -1571,6 +1571,37 @@
           <ref column="output_vlan"/>, replacing any existing tag; when it is
           sent out an implicit VLAN port, the frame will not be tagged.  This
           type of mirroring is sometimes called RSPAN.</p>
+        <p>
+          The following destination MAC addresses will not be mirrored to a
+          VLAN to avoid confusing switches that interpret the protocols that
+          they represent:
+        </p>
+        <dl>
+          <dt><code>01:80:c2:00:00:00</code></dt>
+          <dd>IEEE 802.1D Spanning Tree Protocol (STP).</dd>
+
+          <dt><code>01:80:c2:00:00:01</code></dt>
+          <dd>IEEE Pause frame.</dd>
+
+          <dt><code>01:80:c2:00:00:0<var>x</var></code></dt>
+          <dd>Other reserved protocols.</dd>
+
+          <dt><code>01:00:0c:cc:cc:cc</code></dt>
+          <dd>
+            Cisco Discovery Protocol (CDP), VLAN Trunking Protocol (VTP),
+            Dynamic Trunking Protocol (DTP), Port Aggregation Protocol (PAgP),
+            and others.
+          </dd>
+
+          <dt><code>01:00:0c:cc:cc:cd</code></dt>
+          <dd>Cisco Shared Spanning Tree Protocol PVSTP+.</dd>
+
+          <dt><code>01:00:0c:cd:cd:cd</code></dt>
+          <dd>Cisco STP Uplink Fast.</dd>
+
+          <dt><code>01:00:0c:00:00:00</code></dt>
+          <dd>Cisco Inter Switch Link.</dd>
+        </dl>
         <p><em>Please note:</em> Mirroring to a VLAN can disrupt a network that
           contains unmanaged switches.  Consider an unmanaged physical switch
           with two ports: port 1, connected to an end host, and port 2,