Ask Your Question
0

differences between br-int and br-data

asked 2014-05-29 19:37:39 -0500

shengchao liu gravatar image

Now I am installing the Openstack with havana,I am amused by the br-int network with the br-data network,I think they are the same,am I right?

edit retag flag offensive close merge delete

3 answers

Sort by ยป oldest newest most voted
2

answered 2014-05-29 22:25:26 -0500

annegentle gravatar image

When I search: "br-data" site:docs.openstack.org I don't find a reference to a bridge named br-data. I also do not see it in the neutron code base, so possibly it's part of an existing network config and not directly related to OpenStack.

edit flag offensive delete link more
1

answered 2014-05-31 05:16:11 -0500

SGPJ gravatar image

br-int & br-ex is part of OVS. not sure about br-data. can you explain where did you find br-data?

edit flag offensive delete link more
1

answered 2014-05-29 23:20:33 -0500

dbaxps gravatar image

updated 2014-05-29 23:48:55 -0500

br-int is OVS ingegration bridge. View Open vSwitch1, Open vSwitch 2

Per last manual :-
There are four distinct type of virtual networking devices: TAP devices, veth pairs, Linux bridges, and Open vSwitch bridges. For an ethernet frame to travel from eth0 of virtual machine vm01 to the physical network, it must pass through nine devices inside of the host: TAP vnet0, Linux bridge qbrnnn, veth pair (qvbnnn, qvonnn), Open vSwitch bridge br-int, veth pair (int-br-eth1, phy-br-eth1), and, finally, the physical network interface card eth1.
Sample bellow on Controller:-
[root@icehouse1 ~(keystone_admin)]# ovs-vsctl show
a675c73e-c707-4f29-af60-57fb7c3f81c4
    Bridge br-int
        Port br-int
            Interface br-int
                type: internal
        Port "tapa7e1ac48-7b"
            tag: 1
            Interface "tapa7e1ac48-7b"
                type: internal
        Port "qvo729eb3dc-3f"
            tag: 1
            Interface "qvo729eb3dc-3f"
        Port "qr-bbba6fd3-a3"
            tag: 1
            Interface "qr-bbba6fd3-a3"
                type: internal
        Port "qvo11471ea5-a0"
            tag: 1
            Interface "qvo11471ea5-a0"
        Port "tap15ef9839-d1"
            tag: 2
            Interface "tap15ef9839-d1"
                type: internal
        Port "qr-d571b287-d1"
            tag: 2
            Interface "qr-d571b287-d1"
                type: internal
        Port "qvobc5ab123-06"
            tag: 1
            Interface "qvobc5ab123-06"
        Port "int-br-p4p1"
            Interface "int-br-p4p1"
        Port "qvo96399449-5f"
            tag: 1
            Interface "qvo96399449-5f"
    Bridge "br-p4p1"
        Port "p4p1"
            Interface "p4p1"
        Port "phy-br-p4p1"
            Interface "phy-br-p4p1"
        Port "br-p4p1"
            Interface "br-p4p1"
                type: internal
.  .  .  .  .
On Compute :-
[root@icehouse2 ~]# ovs-vsctl  show
bf768fc8-d18b-4762-bdd2-a410fcf88a9b
    Bridge "br-p4p1"
        Port "br-p4p1"
            Interface "br-p4p1"
                type: internal
        Port "phy-br-p4p1"
            Interface "phy-br-p4p1"
        Port "p4p1"
            Interface "p4p1"
    Bridge br-int
        Port br-int
            Interface br-int
                type: internal
        Port "qvo6cc9af1a-5f"
            tag: 1
            Interface "qvo6cc9af1a-5f"
        Port "qvod18de1da-fd"
            tag: 1
            Interface "qvod18de1da-fd"
        Port "qvo1492886c-c7"
            tag: 1
            Interface "qvo1492886c-c7"
        Port "qvofb873e61-0a"
            tag: 1
            Interface "qvofb873e61-0a"
        Port "int-br-p4p1"
            Interface "int-br-p4p1"
    ovs_version: "2.1.2"
edit flag offensive delete link more

Comments

[root@icehouse1 ~(keystone_admin)]# brctl show
bridge name bridge id STP enabled interfaces
qbr96399449-5f 8000.7aa0a9bebcf3 no qvb96399449-5f
tap96399449-5f
[root@icehouse1 ~(keystone_admin)]# ovs-vsctl show | grep 96399449-5f
Port "qvo96399449-5f"
Interface "qvo96399449-5f"

dbaxps gravatar imagedbaxps ( 2014-05-30 00:00:57 -0500 )edit

The br-int OpenvSwitch bridge is the integration bridge: all of the guests running on the compute host connect to this bridge. OpenStack Networking implements isolation across these guests by configuring the br-int ports.

dbaxps gravatar imagedbaxps ( 2014-05-30 14:51:07 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower

Stats

Asked: 2014-05-29 19:37:39 -0500

Seen: 1,026 times

Last updated: May 31 '14