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•OpenStack   •Juno  :Neutron   •Juno  :  () •
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Havana
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nOVS  Plugin    Option üOpenStack  IceHouse    OVS  Integration   2  Option4
1. Network  termination a. L3   b. L2  
2. L2  Encapsulation  between  bridge  devices A. VLAN  mode B. GRE  mode
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ü VM GRE
ü L3 termination GRE   Network node L3 agent)
Physical Network
o Physical Network L3 o MAC/VID L3
Physical Network resource
x Performance GRE  encap/ decap VLAN mode
x L3 routing, DHCP Network Node
L3 agent
L3 Routing
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OVS  plugin   n üNetwork  node    SPoF    (*) (*)  pacemaker    Active/Standby  
n ü  Network  node    L3   Agent  
n üNetwork  node    Single  node  
üdnsmasq  etc  ,  etc  …
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n üCompute  node    l3-agent   üCompute  to  Compute    Network  node  
br-int
Network node L3- agent
Compute
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n ükeepalived  +  conntrackd    VRRP    l3-agent  
https://wiki.openstack.org/wiki/Neutron/L3_High_Availability_VRRP
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OVS  plugin  Juno n üNetwork  node    SPoF   üActive-Standby  HA  (?)
n ü  Network  node    L3   Agent  
üDVR    Compute    (?)
n üNetwork  node    Single  node  
üdnsmasq  etc  ,  etc  …
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ü  OpenStack    Neutron  Plugin  ! üOVS  plugin
http://www.midokura.com/midonet/
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http://www.midonet.info/openstack_training/
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