Hi：
I have the following two questions.
What shall I do?
problem1：When the cloud host accesses the external network through L3 router.
TCP protocol has a large number of retransmissions, leading to TCP link
failure, TCP data transmission error
problem2：TCP links data packets, duplicates ACK and TCP data transmission
disorderly when the instances communicate across hosts through geneve, but the
quality impact of TCP is relatively acceptable.
openstack queens with ovn
environment
OS：
CentOS Linux release 7.3.1611 (Core)
kernel：
3.10.0-514.el7.x86_64
openstack： kolla-ansible queens
networking-ovn：python-networking-ovn-4.0.3
ovs and ovn：
openvswitch-ovn-central-2.10.90
openvswitch-2.10.90
openvswitch-ovn-host-2.10.90
openvswitch-ovn-common-2.10.90
topology：
openstack controller 10.200.105.19
openstack compute 10.200.105.16，10.200.105.17，10.200.105.18
openstack gateway 10.200.105.20
openstack controller gateway
compute
10.200.105.19 10.200.105.20
10.200.105.[16-18]
neutron_server
ovn-northd
---------bond0------------|------------------------------------------------------------------|
| |
|
ovn-controller ovn-controller
ovn-controller
| |
|
ovs ovs
ovs
| | | |
| |
|
|----------------------------------|--|------bond0-------------------------------------------------|--|
|-------------------------------------|--------bond1--------------------------------------------------|
Packet forwarding：
| compute1 | compute2 |
gateway |
| 10.200.105.16 | 10.200.105.17 |
10.200.105.20 |
| vm1 | vm2
| |
| | | |
| |
| br-int <-> br-ex | br-int <-> br-ex |
br-int <-> br-ex |
| |_____bond1_vlan___|___________|____________|________|
|__________bond0_____________|_______________________|
1、L3 data flow
10.200.100.16 |
10.200.105.20
vm1<--->br-int<-->geneve <->bond0 <―->
bond0<-->geneve<--->br-ex<-->bond1<-->vlan<---->internet
2、vm1<->vm2
10.200.100.16 |
10.200.105.17
vm1<--->br-int<-->geneve <->bond0 <―-> bond0<-->geneve<--->br-int<--->vm2
Configure：
Openstack Configure
1、neutron.conf
...
service_plugins = networking_ovn.l3.l3_ovn.OVNL3RouterPlugin,qos
...
2、cat /etc/kolla/neutron-server/ml2_conf.ini
[ml2]
type_drivers = flat,vlan,local,geneve
tenant_network_types = geneve
mechanism_drivers = ovn
extension_drivers = port_security,qos
overlay_ip_version = 4
[ml2_type_vlan]
network_vlan_ranges = physnet1
[securitygroup]
enable_security_group = true
[ml2_type_geneve]
vni_ranges = 1:65536
max_header_size = 38
[ovn]
ovn_nb_connection = tcp:10.200.105.19:6641
ovn_sb_connection = tcp:10.200.105.19:6642
ovn_l3_mode = True
ovn_l3_scheduler = leastloaded
ovn_native_dhcp = True
neutron_sync_mode = repair
enable_distributed_floating_ip = True
ovsdb_log_level = DEBUG
[qos]
notification_drivers = ovn-qos
Ovn Configure
10.200.105.19
ovs-vsctl get open . external_ids
{hostname="10-200-105-19", ovn-bridge-mappings="physnet1:br-ex",
ovn-encap-ip="10.200.105.19", ovn-encap-type="geneve,vxlan",
ovn-remote="tcp:10.200.105.19:6642", rundir="/var/run/openvswitch",
system-id="160e569c-a12f-41a3-8d2a-37bd9af0c7ed"}
10.200.105.20
ovs-vsctl get open . external_ids
{hostname="10-200-105-20", ovn-bridge-mappings="physnet1:br-ex",
ovn-cms-options=enable-chassis-as-gw, ovn-encap-ip="10.200.105.20",
ovn-encap-type="geneve,vxlan", ovn-remote="tcp:10.200.105.19:6642",
rundir="/var/run/openvswitch", system-id="96e89c3c-5c85-498d-b42f-5aea559bdd42"}
10.200.105.[16-18]
ovs-vsctl get open . external_ids
{hostname="10-200-105-17", ovn-bridge-mappings="physnet1:br-ex",
ovn-encap-ip="10.200.105.17", ovn-encap-type="geneve,vxlan",
ovn-remote="tcp:10.200.105.19:6642", rundir="/var/run/openvswitch",
system-id="a768ca6e-905d-4aac-aa1e-d18b38dedadf"}
ovn-nbctl show
2019-06-03T10:51:46Z|00001|ovsdb_idl|WARN|NB_Global table in OVN_Northbound
database lacks ipsec column (database needs upgrade?)
2019-06-03T10:51:46Z|00002|ovsdb_idl|WARN|NB_Global table in OVN_Northbound
database lacks options column (database needs upgrade?)
switch eddff890-b515-41d3-ad49-edcae9a3197b
(neutron-7489be65-074f-49f0-9cf3-c520dcd3b08d) (aka v)
port 066c4c72-a1f7-4311-8d40-ed7ca0f942b3
addresses: ["fa:16:3e:a8:9d:05 192.168.2.212"]
port edc6e2a9-47db-4a8a-8857-d8afa63d900d
type: router
router-port: lrp-edc6e2a9-47db-4a8a-8857-d8afa63d900d
port provnet-7489be65-074f-49f0-9cf3-c520dcd3b08d
type: localnet
addresses: ["unknown"]
switch 23d3676d-9d95-403e-947c-bcd4b298bde0
(neutron-7dd91bd0-10dd-4022-868c-6d17be7380f7) (aka bb)
port a764f462-7897-475f-9ef0-04b7c83e44db
addresses: ["fa:16:3e:cd:23:b2 10.0.0.11"]
port 71247f19-21bd-4eac-b3db-94e770abb50c
type: router
router-port: lrp-71247f19-21bd-4eac-b3db-94e770abb50c
port 659f304c-266f-4b3f-946a-b3cf4ea988c5
addresses: ["fa:16:3e:f8:5f:1b 10.0.0.9"]
router 3c5d2c44-e3c4-46e9-9f43-64c1cbc7e065
(neutron-f8611590-42a1-4c6a-b433-db9ade3194a2) (aka v)
port lrp-edc6e2a9-47db-4a8a-8857-d8afa63d900d
mac: "fa:16:3e:06:f4:ca"
networks: ["192.168.2.205/16"]
gateway chassis: [311c4582-71d1-4886-baf0-1aefa5f2ceab
d61a09c2-87e2-4dff-91be-82e705ab85f4]
port lrp-71247f19-21bd-4eac-b3db-94e770abb50c
mac: "fa:16:3e:ef:06:c6"
networks: ["10.0.0.1/24"]
nat 4bc0e7cf-3bdb-4725-94e4-a29b62f7d8e0
external ip: "192.168.2.205"
logical ip: "10.0.0.0/24"
type: "snat"
liujin...@xiangcloud.com.cn
_______________________________________________
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
