[openstack-dev] [neutron][networking-sfc] Need help in simulating Service Function VM for forwarding packets from IngressPort to EgressPort

Ravi Sekhar Reddy Konda ravisekhar.konda at oracle.com
Thu Aug 18 00:02:42 UTC 2016


Hi Networking SFC team 




I need some help in using the openstack Networking-SFC for service chaining. 

I am trying out Openstack networking-SFC on the devstack VM. 
I brought up AllInOne Devstack(master branch) on the Ubuntu VM on the VirtualBox. 
I am trying out the following scenario 

|--------------| |--------------| |--------------| 
| VM-SRC | | VM-SF | | VM-DST | 
|--------------| |--------------| |--------------| 
p1 | p2 | |p3 p4 | 
| | | | 
| | | | 
Net1--------------------------------------------------------------------------------------------- 



I am using "cirros-0.3.4-x86_64-uec" image for bringing up VM-SRC, VM-DST and VM-SF 

I got struck in enabling the "cirros-0.3.4-x86_64-uec" VM for forwarding the packets coming from Ingress-Port(p2) to Egress-Port(P3) 
I think we can use IPTables rules for enabling VM to forward packets from Ingress-Port to Egress-Port, but the basic cirros-0.3.4-x86_64-uec 
image does not contain IPTables also, I tried to enable external connectivity for the VM using Floating-IP, I am able to ssh to "VM-SF" from devstack VM using 
floating-IP, but not able to connect to to external world from VM-SF, and I could not even find yum-install on the cirros-0.3.4-x86_64-uec image for installing. 

I want to know if there is any VM with minimal footprint(like UFM) which can be brought up on the virtualBox setup to act as Service Function which enables forwarding. 
Also can anybody give me the steps how to make cirros-0.3.4-x86_64-uec image to act as Service Function for forwarding traffic. 

Thanks in Advance 
Ravi 
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