[Openstack] Openstack Packstack install - Kilo - Compute node and OVS

Nasir Mahmood nasir.mahmood at gmail.com
Tue Oct 6 10:13:34 UTC 2015


hope this helps.



http://lists.openstack.org/pipermail/openstack/2014-January/005011.html

On Tue, Oct 6, 2015 at 2:18 PM, BUTTS, Darren (Darren)** CTR ** <
darren.butts at alcatel-lucent.com> wrote:

> All
>
>
>
> I have installed kilo successfully using packstack to a combination of
> controller and compute nodes, I am able to successfully create instances
> however the virtual interfaces are using an MTU of 1500 even though all the
> bridge interfaces are defined as 9000. I need to ensure that all the
> virtual interfaces are using an mtu of 9000 but this seems to be getting
> defined by some other process regardless of how the physical interfaces are
> configured.
>
>
>
> Is there a known limitation or issue with OVS plugins over ML2 or another
> plugin that causes issues with defining MTU.
>
>
>
> You can see below that br-int is set to 1500 ! is this controlling all the
> other virtual interfaces ? do you have to bind br-int to a real physical
> interface in order for it to be correctly set ? none of this is done or
> seen as an option in packstack so it means additional configuration is that
> really what is needed ?
>
>
>
> [root at blade15 ~]# ifconfig | grep mtu
>
> br20: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br100: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br111: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br112: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br201: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br202: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br210: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br220: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br400: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> br-int: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> br-tun: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.20: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.100: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.111: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.112: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.201: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.202: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.210: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.220: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> enp2s0f0.400: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> int-br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 9000
>
> phy-br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
>
> qbr16cfbed6-ba: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbr517cc995-1a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbr7cd380f7-44: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbr8e16ade0-98: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbrbe028441-60: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbre998f0fd-33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qbred796a27-14: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> qvb16cfbed6-ba: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvb517cc995-1a: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvb7cd380f7-44: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvb8e16ade0-98: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvbbe028441-60: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvbe998f0fd-33: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvbed796a27-14: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvo16cfbed6-ba: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvo517cc995-1a: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvo7cd380f7-44: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvo8e16ade0-98: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvobe028441-60: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvoe998f0fd-33: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> qvoed796a27-14: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu
> 1500
>
> tap16cfbed6-ba: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> tap517cc995-1a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> tap7cd380f7-44: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> tap8e16ade0-98: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> tapbe028441-60: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> tape998f0fd-33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
> taped796a27-14: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>
>
>
> Any help or guidance would be appreciated.
>
>
>
> Thanks
>
>
>
> Darren
>
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-- 
Nasir Mahmood
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