Bug 1881704

Summary: [OVN][RFE] Add support for VXLAN tunnels for interchassis communication
Product: Red Hat OpenStack Reporter: Ihar Hrachyshka <ihrachys>
Component: openstack-tripleo-heat-templatesAssignee: Ihar Hrachyshka <ihrachys>
Status: CLOSED CURRENTRELEASE QA Contact: David Rosenfeld <drosenfe>
Severity: high Docs Contact:
Priority: high    
Version: 16.2 (Train)CC: avishnoi, chrisw, ctrautma, ekuris, eolivare, jishi, jlibosva, ksambor, mburns, pweeks, ralongi, scohen, shrjoshi, skaplons
Target Milestone: z3Keywords: FutureFeature, TechPreview, TestOnly
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openstack-tripleo-heat-templates-11.4.1-2.20210216165026.eaf59f4.el8ost Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: 1881697
: 1916091 (view as bug list) Environment:
Last Closed: 2022-05-12 10:37:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1841526, 1881697, 1916092, 2128735    
Bug Blocks: 1916091    

Description Ihar Hrachyshka 2020-09-22 22:08:17 UTC 
+++ This bug was initially created as a clone of Bug #1881697 +++
+++ This bug was initially created as a clone of Bug #1841526 +++

Description of problem: right now VXLAN is not supported by OVN for regular inter-chassis communication. There is VXLAN support for "vtep" ovsdb schema compliant external switches (aka ramp switches). This RFE is to extend core OVN to support VXLAN for regular in-cluster traffic.

Initial upstream discussion: https://www.mail-archive.com/ovs-discuss@openvswitch.org/msg06771.html
Demo implementation: https://patchwork.ozlabs.org/project/openvswitch/patch/20200320050711.247351-1-ihrachys@redhat.com/

Related links:
https://blog.russellbryant.net/2017/05/30/ovn-geneve-vs-vxlan-does-it-matter/

Core OVN work is tracked in bug 1841526. Neutron work is tracked in bug 1881697. This bug is to adjust TripleO to allow to enable VXLAN network type for OVN setups. We should also consider if we want to enable it by default or not.

An example of a fix can be seen here: https://review.opendev.org/753453
Comment 1 pweeks 2020-12-07 16:05:13 UTC 
moving to networking for prioritization.
Comment 9 Thierry Vignaud 2021-10-14 15:56:15 UTC 
According to our records, this should be resolved by openstack-tripleo-heat-templates-11.5.1-2.20210603174823.el8ost.9.  This build is available now.
Comment 10 Ihar Hrachyshka 2022-04-21 21:43:31 UTC 
*** Bug 1916091 has been marked as a duplicate of this bug. ***