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Should the br-int in up status?

asked 2016-07-13 04:21:43 -0600

kramer gravatar image

updated 2016-07-13 20:59:05 -0600

While using openvswitch as the mech driver for ml2. The status of ovs bridge in my env is not up. For example:

ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:50:56:bf:ec:f6 brd ff:ff:ff:ff:ff:ff
3: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master ovs-system state UP mode DEFAULT qlen 1000
    link/ether 00:50:56:bf:7e:34 brd ff:ff:ff:ff:ff:ff
4: ens35: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:50:56:bf:ac:49 brd ff:ff:ff:ff:ff:ff
5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether b2:43:26:f9:7b:1d brd ff:ff:ff:ff:ff:ff
6: br-int: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT 
    link/ether 6e:42:1c:01:7d:4c brd ff:ff:ff:ff:ff:ff

From the output of ip link command. The br-int is in DOWN mode. I do not know if it is normal. Is it?

Also another question. To setup vlan or flat network. Some times we need to prepare a network interface without ip configuration. Then we put this interface into ovs switch with command

ovs-vsctl add-port br-eth1 eth1

So I want to know do we need to make the eth1 in up status when check it with command

ip link
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Please post your new request as a new question with a proper title.

barry.davis gravatar imagebarry.davis ( 2016-07-14 17:56:05 -0600 )edit

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answered 2016-07-13 12:25:31 -0600

In my working OpenStack configuration using ML2/OVS all bridges appear DOWN using ip link even with active VMs with floating IPs attached to a router. ovs-system, br-int, and br-tun show state DOWN normally.

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Asked: 2016-07-13 04:21:43 -0600

Seen: 414 times

Last updated: Jul 13 '16