erspan: update NEWS and FAQ.

Update Documentation/faq/configuration.rst about ERSPAN and Update NEWS. Cc: Greg Rose <[email protected]> Signed-off-by: William Tu <[email protected]> Signed-off-by: Ben Pfaff <[email protected]>
jfourie1 · May 25, 2018 · 4ee9f05 · 4ee9f05
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diff --git a/Documentation/faq/configuration.rst b/Documentation/faq/configuration.rst
@@ -193,8 +193,24 @@ Q: How do I configure mirroring of all traffic to a GRE tunnel?
 
 Q: Does Open vSwitch support ERSPAN?
 
-    A: No.  As an alternative, Open vSwitch supports mirroring to a GRE tunnel
-    (see above).
+    A: Yes. ERSPAN version I and version II over IPv4 GRE and
+    IPv6 GRE tunnel are supported.  See ovs-fields(7) for matching
+    and setting ERSPAN fields.
+
+    ::
+
+        $ ovs-vsctl add-br br0
+        $ #For ERSPAN type 2 (version I)
+        $ ovs-vsctl add-port br0 at_erspan0 -- \
+                set int at_erspan0 type=erspan options:key=1 \
+                options:remote_ip=172.31.1.1 \
+                options:erspan_ver=1 options:erspan_idx=1
+        $ #For ERSPAN type 3 (version II)
+        $ ovs-vsctl add-port br0 at_erspan0 -- \
+                set int at_erspan0 type=erspan options:key=1 \
+                options:remote_ip=172.31.1.1 \
+                options:erspan_ver=2 options:erspan_dir=1 \
+                options:erspan_hwid=4
 
 Q: How do I connect two bridges?
 

diff --git a/NEWS b/NEWS
@@ -37,6 +37,11 @@ Post-v2.9.0
          ovs-appctl dpif-netdev/pmd-perf-show
      * Supervision of PMD performance metrics and logging of suspicious
        iterations
+   - ERSPAN:
+     * Implemented ERSPAN protocol (draft-foschiano-erspan-00.txt) for
+       both kernel datapath and userspace datapath.
+     * Added port-based and flow-based ERSPAN tunnel port support, added
+       OpenFlow rules matching ERSPAN fields. See ovs-fields(7).
 
 v2.9.0 - 19 Feb 2018
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