neutron/releasenotes/notes
Ihar Hrachyshka 38531ca59c Revert "ML2: Configure path_mtu to default to 1500 bytes"
This reverts commit 7a4633a9ca.

Revert to using 0 as the default value for path_mtu.

In most situations, underlying MTU does not differ for tunnel backed and
vlan/flat tenant networks, in which case the only configuration expected
from operators is setting global_physnet_mtu to the appropriate MTU
value as reflecting all data paths that tenant traffic may take between
nodes.

But with the non-zero value set for path_mtu, if an operator would like
to raise the global underlying MTU used by neutron to support Jumbo
frames, both global_physnet_mtu and path_mtu need a bump, which is not
ideal.

So switch back to using a zero value for path_mtu, effectively making it
not participating in MTU calculation, unless explicitly overridden.

Left the original release note intact since it reflects the state for
Mitaka.

Added a release note for the change.

Conflicts:
	neutron/plugins/ml2/config.py
	releasenotes/notes/1500-default-mtu-b0d6e4ab193b62a4.yaml

Change-Id: I97c4aa647efc85d7b6b45359e43e2a2ae2514a69
2016-04-21 15:50:34 +02:00
..
.placeholder Add reno for release notes management 2015-11-04 22:27:56 +00:00
404-for-quota-tenant-2c09c16759269b21.yaml Return a 404 on quota delete if entry not found 2016-04-18 20:32:51 +00:00
1500-default-mtu-b0d6e4ab193b62a4.yaml Release notes: prelude items should not have a - (aka bullet) 2016-03-05 07:36:30 -08:00
1500-default-segment-mtu-54e2cf6aea9602d5.yaml Release notes: prelude items should not have a - (aka bullet) 2016-03-05 07:36:30 -08:00
access_as_external_rbac-455dc74b9fa22761.yaml Use network RBAC feature for external access 2016-02-29 19:05:26 -08:00
add-availability-zone-4440cf00be7c54ba.yaml Add a link of availability zone document into releasenote 2015-12-21 17:17:31 +09:00
add-get-me-a-network-56321aeef5389001.yaml Add the ability to load a set of service plugins on startup 2016-02-10 10:04:15 -06:00
add-integration-with-external-dns-f56ec8a4993b1fc4.yaml External DNS driver reference implementation 2016-01-21 21:55:08 +00:00
add-ip-protocols-in-sg-60467a073e771aee.yaml Add popular IP protocols for security group 2016-01-22 19:25:33 +05:30
add-port-rebinding-chance-33178b9abacf5804.yaml Add the rebinding chance in _bind_port_if_needed 2016-02-15 14:30:04 +02:00
add-rbac-qos-8b1154ee756c66df.yaml Qos policy RBAC DB setup and migration 2016-02-26 17:03:59 +00:00
add-standard-attr-descriptions-1ba0d7a454c3fd8f.yaml Add a description field to all standard resources 2016-03-05 02:29:35 +00:00
add-tags-to-core-resources-b05330a129900609.yaml Add filter for resource tag 2016-03-01 20:47:12 +00:00
add-timestamp-fields-f9ab949fc88f05f6.yaml Add timestamp changed-since for core resources 2016-03-08 16:09:47 +08:00
advertise_mtu_by_default-d8b0b056a74517b8.yaml Make Neutron attempt to advertise MTUs by default 2016-01-18 13:34:16 +01:00
advertisement-intervals-for-radvd-configurable-6d85b5fdd97a2742.yaml Make advertisement intervals for radvd configurable 2016-01-22 15:14:35 +00:00
allow-non-admins-to-define-external-extra-routes-0d541fc356a5c546.yaml Allow non-admins to define "external" extra-routes 2016-02-21 14:41:17 +01:00
bgp-support-ef361825ca63f28b.yaml Queries for DVR-aware floating IP next-hop lookups 2016-03-09 20:01:56 +00:00
clear-allowed-address-pairs-with-none-4757bcca78076c9e.yaml Allow address pairs to be cleared with None 2016-02-19 22:10:43 -08:00
config-file-generation-2eafc6602d57178e.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00
config-wsgi-pool-size-a4c06753b79fee6d.yaml Add an option for WSGI pool size 2016-04-12 10:14:15 -04:00
correlate-address-scope-with-network-ea16e16b0154ac21.yaml Correlate address scope with network 2016-02-22 22:46:18 -05:00
default-local-dns-a1c3fa1451f228fa.yaml Set default value for dnsmasq_local_resolv to False 2016-01-27 16:42:11 +00:00
default-subnetpool-semantics-1cdc5cdde2be88c2.yaml Add use_default_subnetpool to subnet create requests 2016-02-23 20:53:43 -07:00
deprecate_max_fixed_ips_per_port-5e80518cbf25cfd6.yaml Add reno for deprecation of max_fixed_ips_per_port 2016-03-10 15:03:30 -08:00
deprecate_prevent_arp_spoofing_option-a09e673fc8f9fee4.yaml release note to deprecate prevent_arp_spoofing option 2016-04-18 06:18:36 +00:00
deprecate-force_gateway_on_subnet-376855c4e66f4e11.yaml Deprecate 'force_gateway_on_subnet' configuration option 2016-02-22 11:19:14 +05:30
deprecate-network-device-mtu-59b78264c9974808.yaml Deprecate network_device_mtu 2016-03-01 00:18:35 +00:00
deprecate-router_id-34aca9ea5ee9e789.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00
deprecated-driver-e368e0befc9bee4c.yaml Add to deprecate OFAgent in release note 2015-12-18 06:39:26 +09:00
direct-physical-vnic-878d15bdb758b70e.yaml Adding a VNIC type for physical functions 2015-12-14 10:02:40 -03:30
dscp-qos-77ea9b27d3762e48.yaml DSCP QoS rule implementation 2016-03-18 10:07:24 +01:00
dvr-ha-support-cc67e84d9380cd0b.yaml HA for DVR - Neutron Server side code changes 2016-02-08 16:49:58 -07:00
dvr-ovs-agent-6052a8d60fddde22.yaml Reno note regarding OVS DVR agent failure on startup 2016-02-04 11:01:13 -05:00
dvr-support-live-migration-b818b12bd9cbb518.yaml Improve release notes for dvr fixes 2016-03-15 15:18:54 +00:00
end-to-end-mtu-00345fc4282cb8fb.yaml Make agent interface plugging utilize network MTU 2016-02-29 19:19:25 +00:00
fail-on-missing-extensions-bc332124b780875b.yaml Fail if required extensions are missing 2016-01-29 16:20:07 -08:00
hyperv-neutron-agent-decomposition-ae6a052aeb48c6ac.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00
linuxbridge_vxlan_arp_responder-e9ea91552e1b62a7.yaml Release notes: fix broken release notes 2016-03-05 22:53:18 -08:00
linuxbridge-agent-extensions-66bdf9feee25ef99.yaml Add extension_manager and support for extensions in linuxbridge agent 2016-01-05 12:38:11 +00:00
macvtap_assigned_vf_check-f4d07660ffd82a24.yaml SR-IOV: Fix macvtap assigned vf check when kernel < 3.13 2016-01-07 09:38:39 +01:00
macvtap-l2-agent-2b551d8ec341196d.yaml macvtap: Macvtap L2 Agent 2016-02-26 15:48:01 +00:00
mtu-selection-and-advertisement-ab29f9ec43140224.yaml Support MTU advertisement using IPv6 RAs 2016-02-10 09:59:33 +00:00
network_ip_availability-d64bd7032b3c15ee.yaml ADD API tests for network ip availability 2016-03-11 16:49:14 -08:00
new-vif-type-for-pf-passthrough-33ec560b9b5d246f.yaml sriov-mech: Introduce a new VIF type for PF vnic type 2016-01-21 11:48:45 +00:00
oslo-messaging-notifier-queue-d94677076a1db261.yaml Add separate transport for notifications 2016-01-26 17:40:03 +00:00
oslo-reports-166a169037bf64f2.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00
ovs-ct-firewall-driver-52a70a6a16d06f59.yaml Open vSwitch conntrack based firewall driver 2016-02-16 16:47:21 +00:00
path-mtu-back-to-zero-e4f9e8bdd8317ad4.yaml Revert "ML2: Configure path_mtu to default to 1500 bytes" 2016-04-21 15:50:34 +02:00
physical_network-aware-dhcp-scheduling-94e9fadc7c7c5fec.yaml Make DHCP agent scheduler physical_network aware 2016-02-15 22:25:29 +01:00
QoS-for-linuxbridge-agent-bdb13515aac4e555.yaml Add support for QoS for LinuxBridge agent 2016-03-01 10:45:02 +00:00
remove-driver-60eb7e26d95f7322.yaml Remove Openflow Agent(OFAgent) mechanism driver 2016-04-12 14:10:34 +09:00
remove-force_gateway_on_subnet-77cb79f0b35d0c6d.yaml Removing 'force_gateway_on_subnet' option 2016-03-23 12:14:26 +05:30
rm-notify-entry-points-aa442134a780469a.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00
segment_mtu_to_global_physnet_mtu-9cee5ff09557edeb.yaml Add global_physnet_mtu and deprecate segment_mtu 2016-03-08 11:11:08 -08:00
sriov_allow_use_many_nics_for_one_physnet-3570aa67a60ce6c4.yaml Allow to use several nics for physnet with SR-IOV 2016-03-30 18:33:56 +03:00
sriov_show_l2_agent_extensions-ca852e155a529e99.yaml SR-IOV agent: display loaded extensions 2016-01-06 10:45:09 +02:00
use-keystoneauth-24f309566001a16b.yaml Cleanup all the release notes 2015-12-15 20:31:22 -05:00