This sounds like you're asking how you might do service function chaining with 
Neutron.  Is that a fair way to characterize your thoughts? I think the concept 
of service chain provisioning in Neutron is worth some discussion, keeping in 
mind Neutron is not a fabric controller.


From: A, Keshava
Sent: Tuesday, November 04, 2014 11:28 PM
To: OpenStack Development Mailing List (not for usage questions); Singh, 
Gangadhar S
Subject: [openstack-dev] openstack-dev] [neutron] [nfv]

I am thinking loud here, about NFV Service VM and OpenStack infrastructure.
Please let me know does the below scenario analysis make sense.

NFV Service VM's are hosted on cloud (OpenStack)  where in there are  2 Tenants 
with different Service order of execution.
(Service order what I have mentioned here is  just an example ..)

*         Does OpenStack controls the order of Service execution for every 
packet ?

*         Does OpenStack will have different Service-Tag for different Service ?

*         If there are multiple features with in a Service-VM, how 
Service-Execution is controlled in that  VM ?

*         After completion of a particular Service ,  how the next Service will 
be invoked ?

Will there be pre-configured flows from OpenStack  to invoke next service for 
tagged packet from Service-VM ?



Thanks & regards,

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