I still don’t get it.
I can’t see the veth pair configured when calling
#ip link list
56: qbrea4f9446-76: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP
link/ether 66:83:23:7a:7c:4d brd ff:ff:ff:ff:ff:ff
57: qvoea4f9446-76: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast state UP qlen 1000
link/ether 5e:0f:5b:63:3f:b2 brd ff:ff:ff:ff:ff:ff
58: qvbea4f9446-76: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc
pfifo_fast master qbrea4f9446-76 state UP qlen 1000
link/ether 66:83:23:7a:7c:4d brd ff:ff:ff:ff:ff:ff
59: tapea4f9446-76: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
master qbrea4f9446-76 state UNKNOWN qlen 500
link/ether fe:16:3e:d7:d7:13 brd ff:ff:ff:ff:ff:ff
Do other methods exist to configure veth pairs?
Von: Erik McCormick [mailto:[email protected]]
Gesendet: Mittwoch, 19. November 2014 17:18
An: Stinner, Thomas
Cc: [email protected]
Betreff: Re: [Openstack] Understanding Neutron/ML2/Openvswitch/VXLAN
This uses VLANs in the examples, but everything should still generally apply to
your question:
http://masimum.inf.um.es/fjrm/2013/12/26/the-journey-of-a-packet-within-an-openstack-cloud/
Basically the TAP interface attaches to the qvb interface which links it to a
veth pair (qvr and qvo) with qvo attached to the integration bridge (br-int)
which then goes to patch-tun and into br-tun. Fun right? ;).
On Wed, Nov 19, 2014 at 10:12 AM, Stinner, Thomas
<[email protected]<mailto:[email protected]>>
wrote:
Hi,
i would like to understand how Neutron is configuring OpenVswitch when using
ML2.
For example, on one of the compute nodes I have a VM that is called
host-vxlan2. Instance name is instance-00000e7.
This VM has the following network interface:
<interface type='bridge'>
<mac address='fa:16:3e:d7:d7:13'/>
<source bridge='qbrea4f9446-76'/>
<target dev='tapea4f9446-76'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
The bridge has two interfaces, a tap device that is connected to the vm and
another interface.
qbrea4f9446-76 8000.6683237a7c4d no qvbea4f9446-76
tapea4f9446-76
OVs has three bridges - br-ex, br-int, br-tun.
However, none of these bridges contain qbrea4f9446-76 or qvbea4f9446-76. But
they contain a Port "qvoea4f9446-76" (similar name!).
Which command defines the connection between "qvoea4f9446-76" and
"qbrea4f9446-76"?
Thanks in advance
Thomas
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