[ovs-dev] [PATCH] ovn-architecture: Add notes on L3 gateway HA.
Russell Bryant
russell at ovn.org
Sun Jul 16 20:09:29 UTC 2017
Add some comments to the ovn-architecture document that distributed
gateway ports can also be made highly available. Provide a brief
overview of the approach and point to the gateway HA design document
for a more detailed discussion of the approach taken.
Signed-off-by: Russell Bryant <russell at ovn.org>
---
ovn/ovn-architecture.7.xml | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/ovn/ovn-architecture.7.xml b/ovn/ovn-architecture.7.xml
index e91be8bf6..5f73e2067 100644
--- a/ovn/ovn-architecture.7.xml
+++ b/ovn/ovn-architecture.7.xml
@@ -1341,6 +1341,28 @@
logical patch port representing the distributed gateway port.
</p>
+ <h3>High Availability for Distributed Gateway Ports</h3>
+
+ <p>
+ OVN allows you to specify a prioritized list of chassis for a distributed
+ gateway port. This is done by associating multiple
+ <code>Gateway_Chassis</code> rows with a <code>Logical_Router_Port</code>
+ in the <code>OVN_Northbound</code> database.
+ </p>
+
+ <p>
+ When multiple chassis have been specified for a gateway, all chassis that
+ may send packets to that gateway will enable BFD on tunnels to all
+ configured gateway chassis. The current master chassis for the gateway
+ is the highest priority gateway chassis that is currently viewed as
+ active based on BFD status.
+ </p>
+
+ <p>
+ For more information on L3 gateway high availability, please refer to
+ http://docs.openvswitch.org/en/latest/topics/high-availability.
+ </p>
+
<h2>Life Cycle of a VTEP gateway</h2>
<p>
--
2.13.3
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