[ovs-discuss] Tap interface strange state in openvswitch bridge
Eugene Prokopiev
enp at itx.ru
Sat Jan 12 11:52:36 UTC 2019
Hi,
I tried to use openvswitch 2.10.1 on CentOS 7.6 as simple bridge with
this configuration:
# ovs-vsctl show
871cc572-c509-45ca-878e-d6c47a366334
Bridge "ovsbr0"
Port "tap0"
Interface "tap0"
Port "ovsbr0"
Interface "ovsbr0"
type: internal
Port "enp2s0f1"
Interface "enp2s0f1"
ovs_version: "2.10.1"
Interfaces enp2s0f1 and ovsbr0 are up:
# ip link show enp2s0f1
5: enp2s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
master ovs-system state UP mode DEFAULT group default qlen 1000
link/ether 10:1f:74:31:ec:24 brd ff:ff:ff:ff:ff:ff
# ip link show ovsbr0
10: ovsbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 10:1f:74:31:ec:24 brd ff:ff:ff:ff:ff:ff
I see network packets on enp2s0f1 and ovsbr0 both with tcpdump, but
see nothing on tap0, which has strange state:
# ip link show tap0
11: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc
pfifo_fast master ovs-system state DOWN mode DEFAULT group default
qlen 1000
link/ether 02:11:42:60:63:d8 brd ff:ff:ff:ff:ff:ff
Nothing happens after ip link set tap0 up
What is wrong in my configuration?
--
WBR,
Eugene Prokopiev
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