Open Stack

Hello Yngvi,

You can make changes in /etc/network/interfaces as follows:
1. Define interface br-ex, give it static IP same as em3.
2. Add em3 to promiscuous mode.

Your interfaces file should look something like:

*auto br-ex*
*iface br-ex inet static*
*address X.X.X.X*
*netmask **X.X.X.X*
*network **X.X.X.X*
*dns-nameservers **X.X.X.X*
*dns-search example.com <http://example.com>*
*gateway **X.X.X.X*

*auto em3*
*iface em3 inet manual*
*up ifconfig $IFACE 0.0.0.0 up*
*up ip link set $IFACE promisc on*
*down ip link set $IFACE promisc off*
*down ifconfig $IFACE down*


Hope this helps!

--
Regards,
Akshay

On Wed, Mar 25, 2015 at 4:00 PM, Yngvi Páll Þorfinnsson <yngvith at siminn.is>
wrote:

> Hi Andreas
> Yes you're absolutely correct about this, when I use
> ifconfig em3 0
> ifconfig br-ex 172.22.17.12/24
> I can ping the default gateway 172.22.7.1
>
> But, how would you configure this permanently?  i.e. how would you edit
> the network configuration file:
> /etc/network/interfaces
> To make this a permanent configuration?
>
> Thanks a lot for your help !
>
> Best regards
> Yngvi
>
> -----Original Message-----
> From: Andreas Scheuring [mailto:scheuran at linux.vnet.ibm.com]
> Sent: 24. mars 2015 15:31
> To: Yngvi Páll Þorfinnsson
> Cc: openstack at lists.openstack.org
> Subject: Re: [Openstack] openvswitch configuraion
>
> Hi Yngyi,
>
> this absolutely makes sense.
>
> As soon as you add a port to a bridge (doesn't matter if linux- or
> ovs-bridge) it cannot be used as ip interface anymore. What you have to do
> after you've added this interface to br-ex, you have to "move up" the ip
> address to the br-ex.
>
> e.g.
> > ifconfig em3 0
> > ifconfig br-ex 172.22.17.12/24
>
> And you should be fine
>
>
> Hope this helps!
>
> --
> Andreas
> (irc: scheuran)
>
>
> On Tue, 2015-03-24 at 14:31 +0000, Yngvi Páll Þorfinnsson wrote:
> > Hi,
> >
> > I‘ll just give you an update on this „problem“.
> >
> > I can go back and ping the default gateway etc.
> >
> > if I go back one step, and delete the port config for br-ex
> >
> >
> >
> > ovs-vsctl del-port br-ex em3
> >
> >
> >
> > best regards
> >
> > Yngvi
> >
> >
> >
> > From: Yngvi Páll Þorfinnsson
> > Sent: 23. mars 2015 16:45
> > To: openstack at lists.openstack.org
> > Subject: [Openstack] openvswitch configuraion
> >
> >
> >
> >
> > Hi,
> >
> > I‘m trying to configure neutron on the networking node.
> >
> >
> >
> > My problem is:
> >
> > The 3rd interface is somehow not working after I configure
> > openvswitch.
> >
> >
> >
> > I‘m using the manual
> >
> > „OpenStack Installation Guide for Ubuntu 14.04“  - Juno
> >
> > Everything has gone well until I reached the configuration of the Open
> > vSwitch (OVS)mechanism.
> >
> > i.e.
> >
> > To configure the Modular Layer 2 (ML2) plug-in
> >
> > The ML2 plug-in uses theOpen vSwitch (OVS)mechanism (agent) to build
> > the virtual networking
> >
> > framework for instances. However, the controller node does not need
> > the OVS
> >
> > components because it does not handle instance network traffic.
> >
> >
> >
> > And as I‘ve edited the configuration file
> >
> > /etc/neutron/plugins/ml2/ml2_conf.ini
> >
> > Accordingly to the instructions.
> >
> >
> >
> > IP address for the 3rd interface is 172.22.17.12
> >
> >
> >
> > ip addr show
> >
> >
> >
> > 4: em3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master
> > ovs-system state UP group default qlen 1000
> >
> >     link/ether d4:85:64:cc:a2:2e brd ff:ff:ff:ff:ff:ff
> >
> >     inet 172.22.17.12/24 brd 172.22.17.255 scope global em3
> >
> >        valid_lft forever preferred_lft forever
> >
> >     inet6 fe80::d685:64ff:fecc:a22e/64 scope link
> >
> >        valid_lft forever preferred_lft forever
> >
> >
> >
> >
> >
> > But now when I‘m trying to ping default gateway or openstack.org it
> > does not work anymore.
> >
> >
> >
> > route -n
> >
> > Kernel IP routing table
> >
> > Destination     Gateway         Genmask         Flags Metric Ref
> > Use Iface
> >
> > 0.0.0.0         172.22.17.1     0.0.0.0         UG    0      0
> > 0 em3
> >
> > 169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0
> > 0 em2
> >
> > 172.22.14.0     0.0.0.0         255.255.255.0   U     0      0
> > 0 em1
> >
> > 172.22.15.0     0.0.0.0         255.255.255.0   U     0      0
> > 0 em2
> >
> > 172.22.17.0     0.0.0.0         255.255.255.0   U     0      0
> > 0 em3
> >
> >
> >
> > root at opst-netwrk1-dev:~# ping 172.22.17.1
> >
> > PING 172.22.17.1 (172.22.17.1) 56(84) bytes of data.
> >
> > From 172.22.17.12 icmp_seq=1 Destination Host Unreachable
> >
> >
> >
> > root at opst-netwrk1-dev:~# ping 162.242.140.107
> >
> > PING 162.242.140.107 (162.242.140.107) 56(84) bytes of data.
> >
> > From 172.22.17.12 icmp_seq=1 Destination Host Unreachable
> >
> >
> >
> > It worked perfectly before this step.  And it works very well still on
> > the controller and computer nodes.
> >
> >
> >
> > The network card is 10 years old, as the server:
> >
> > HP Proliant DL380 G7
> >
> >
> >
> > Does anyone know if this openvswitch configuration is supported for
> > such an old network card?
> >
> > Could this be the problem?
> >
> >
> >
> > Best regards
> >
> > Yngvi
> >
> >
> >
> > Kveðja,
> >
> > Yngvi Páll Þorfinnsson
> > Engineer
> >
> > Sími +354 550 7457
> > GSM +354 896 7457
> > Fax +354 511 7070
> >
> >
> > Síminn - Ármúli 25 - 108 Reykjavík - Iceland - siminn.is
> >
> >
> > Síminn - Ármúli 25 - 108 Reykjavík - Iceland - siminn.is
> >
> > Ábyrgð þín varðandi tölvupóst.
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
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