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issue with neutron networking

asked 2017-11-20 03:52:30 -0500

akarki gravatar image

Hi, I am trying to understand neutron networking and packet flow. I came across the below show diagram

https://docs.openstack.org/neutron/oc...

I need to understand why is there a need for tap interface in connection of vm with linux bridge can't we use veth pair for this directly

also whats the use of linux bridge in between of ovs and vm

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answered 2017-11-20 16:19:06 -0500

The tap device is created by qemu to connect the VM to the network. You can see it by running

virsh list
virsh domiflist VM-NUMBER-OR-NAME

The bridge is required to implement the firewall around the instance using iptables rules.

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Asked: 2017-11-20 03:52:30 -0500

Seen: 144 times

Last updated: Nov 20 '17