Hi Harish,
    Yes, you need “fab upgrade_kernel”. It could downgrade the kernel. You can 
avoid VLAN in the control_data,
but the gateway may be required.


On 9/20/16, 10:23 AM, "Users on behalf of Patil, Harish" 
<users-boun...@lists.opencontrail.org on behalf of harish.pa...@cavium.com> 

    I¹m trying out Contrail SW installation for the first time. I have an
    issue in installing it.
    Attached are the following to help debug the issue:
    1) Diagram that shows the setup. Its a simple two-node topology with a
    2x25G NIC connected back-back.
    The testbed.py is configured based on that. All the configuration is
    happening over the lab network 172.29.54.x connected via eth0 interfaces.
    The end objective is to create VMs on both nodes using Openstack and ping
    between both VMs using VXLAN as the tunneling protocol using the NIC
    2) The fab setup_all log that shows the failure.
    3) testbed.py
    Additional details:
    1) Contrail SW: 
    2) OS:
    root@dut4092:/opt/contrail/utils# uname -a
    Linux dut4092 4.2.0-27-generic #32~14.04.1-Ubuntu SMP Fri Jan 22 15:32:26
    UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
    - The documentation says 3.13.0-34 is the recommended kernel version. Is
    it a must? 
    Does fab upgrade_kernel_all actually downgrades the linux kernel?  I
    didn¹t experiment by downgrading the kernel since the current installation
    issue does not seem related to linux kernel version.
    - There is a section called ³control_data² in testbed.py. I believe this
    is where we need to specify eth4 and eth5 as NIC interfaces over which the
    VM traffic has to flow.
    But I don¹t want to specify gateway and VLAN. Is it possible?
    #    host1 : { 'ip': '', 'gw' : '',
    'device':'eth0', 'vlan': '224' },

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