Re: [ovs-discuss] [OVN] Should we tunnel traffic on localnet switches?
Thanks Frode for your answer > On 15 Feb 2021, at 20:32, Frode Nordahl wrote: > > On Mon, Feb 15, 2021 at 2:52 PM Daniel Alvarez Sanchez > wrote: >> Recently we found out that due to a misconfiguration of the OVN bridge >> mappings, traffic that should be sent out to an external bridge was tunneled >> to the destination. Since the traffic was working, it took a while to spot >> the misconfiguration. >> While this can be ok as it keeps everything functional, it can have an >> impact in the throughput and the overall performance. The intent of this >> email is to gather feedback as to whether we should keep this behavior or >> rather, drop the traffic and log the misconfiguration issue (like patch-port >> is missing, review the bridge mappings configuration?). > > This is a feature. The fact that OVN does not require all chassis in > the network to have external connectivity gives it a higher degree of > flexibility when compared to other solutions. > > If you operate OVN as an overlay on top of a L3-only CLOS fabric > without EVPN it is required functionality. It allows you to tunnel N/S > traffic to chassis in the physical vicinity of the data center border > routers and avoid spanning a shared L2 across your DC fabric. Right, I see this use case. > OVN used to log the configuration excessively [0], and since then it > has luckily been squelched into a single log message [1]. > > If you are suggesting this may be a source of supportability issues in > case one has missed the one log message, perhaps we need some way of > making this state observable through a call to `ovn-appctl` or > something similar? I think this could definitely help. > > 0: https://bugs.launchpad.net/ubuntu/+source/ovn/+bug/1865127 > 1: > https://patchwork.ozlabs.org/project/openvswitch/patch/20200519155816.24508-3-ihrac...@redhat.com/ > > -- > Frode Nordahl > >> Looking forward to hearing from you. >> Thanks a lot, >> daniel >> ___ >> discuss mailing list >> disc...@openvswitch.org >> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
Re: [ovs-discuss] [OVN] Should we tunnel traffic on localnet switches?
On Mon, Feb 15, 2021 at 2:52 PM Daniel Alvarez Sanchez wrote: > Recently we found out that due to a misconfiguration of the OVN bridge > mappings, traffic that should be sent out to an external bridge was tunneled > to the destination. Since the traffic was working, it took a while to spot > the misconfiguration. > > While this can be ok as it keeps everything functional, it can have an impact > in the throughput and the overall performance. The intent of this email is to > gather feedback as to whether we should keep this behavior or rather, drop > the traffic and log the misconfiguration issue (like patch-port is missing, > review the bridge mappings configuration?). This is a feature. The fact that OVN does not require all chassis in the network to have external connectivity gives it a higher degree of flexibility when compared to other solutions. If you operate OVN as an overlay on top of a L3-only CLOS fabric without EVPN it is required functionality. It allows you to tunnel N/S traffic to chassis in the physical vicinity of the data center border routers and avoid spanning a shared L2 across your DC fabric. OVN used to log the configuration excessively [0], and since then it has luckily been squelched into a single log message [1]. If you are suggesting this may be a source of supportability issues in case one has missed the one log message, perhaps we need some way of making this state observable through a call to `ovn-appctl` or something similar? 0: https://bugs.launchpad.net/ubuntu/+source/ovn/+bug/1865127 1: https://patchwork.ozlabs.org/project/openvswitch/patch/20200519155816.24508-3-ihrac...@redhat.com/ -- Frode Nordahl > Looking forward to hearing from you. > Thanks a lot, > daniel > ___ > discuss mailing list > disc...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
[ovs-discuss] [OVN] Should we tunnel traffic on localnet switches?
Hi folks, Recently we found out that due to a misconfiguration of the OVN bridge mappings, traffic that should be sent out to an external bridge was tunneled to the destination. Since the traffic was working, it took a while to spot the misconfiguration. While this can be ok as it keeps everything functional, it can have an impact in the throughput and the overall performance. The intent of this email is to gather feedback as to whether we should keep this behavior or rather, drop the traffic and log the misconfiguration issue (like patch-port is missing, review the bridge mappings configuration?). Looking forward to hearing from you. Thanks a lot, daniel ___ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
