Reviewed: https://review.opendev.org/c/openstack/neutron/+/871252 Committed: https://opendev.org/openstack/neutron/commit/acb809eea422f417d4bfb2d46918839d7d379e4c Submitter: "Zuul (22348)" Branch: master
commit acb809eea422f417d4bfb2d46918839d7d379e4c Author: Luis Tomas Bolivar <[email protected]> Date: Fri Jan 20 12:16:06 2023 +0100 [OVN] Ensure traffic for provider vlan networks is not tunneled This patch adds an extra checking to ensure the "reside-on-redirect-chassis" is set to true for the logical router port associated to vlan provider network despite having the "ovn_distributed_floating_ip" enabled or not. This is needed as there is an OVN bug [1] making it not work as expected. Note setting this to true has implications as the traffic will be centrallized (but not tunneled) through the node with the gateway port. The expected behavior of this flag, once [1] is fixed is: - reside-on-redirect-chassis flag to False: means traffic goes tunneled to the controller with the gateway port. Means it requires extra MTU reduction to work. - reside-on-redirect-chassis flag to True: means traffic is not tunneled to the controller with the gateway port, but the traffic is centralized through the controller with the gateway port. Thus it does not require extra MTU reduction. - reside-on-redirect-chassis to False, but with ovn-chassis-mac-mappings configured: means the traffic is fully distributed and it is not being tunneled, nor sent, through the controller with the gateway port. This is the preferred option as it does not require MTU reduction and it avoids the extra hop. However it is not working as expected, therefore the fallback to set reside-on-redirect-chassis to True. [1] https://bugzilla.redhat.com/show_bug.cgi?id=2162756 Closes-Bug: #2003455 Change-Id: I662cb30c842e54bb9f7dabac5519283aa7c7f8d0 ** Changed in: neutron Status: In Progress => Fix Released ** Bug watch added: Red Hat Bugzilla #2162756 https://bugzilla.redhat.com/show_bug.cgi?id=2162756 -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/2003455 Title: [ovn] MTU issues due to centralized vlan provider networks Status in neutron: Fix Released Bug description: After this change was added [1] the traffic gets centralized not only for vlan tenant networks, but also for vlan provider networks. This means that extra reduction on the MTU size needs to be done to account for the geneve encapsulation due to traffic going through the networker node instead of directly from the node [1] https://opendev.org/openstack/networking-ovn/commit/1440207c0d568068a37a306a7f03a81ad58e468f To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/2003455/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
