hi,friend:
I have four vm on host.
Bridge "kvmbr0"
Port "vnet1"
tag: 10
Interface "vnet1"
Port "kvmbr0"
Interface "kvmbr0"
type: internal
Port "eth0"
Interface "eth0"
Port "vnet3"
tag: 30
Interface "vnet3"
Port "vnet2"
tag: 10
Interface "vnet2"
Port "vnet0"
tag: 10
Interface "vnet0"
ovs_version: "1.7.1"
vm1:10.190.30.2(vnet1)
vm3:10.190.30.5(vnet3)
I want to make vm1 communicate with vm3 by modifying the vlan tag.I used
ovs-ofctl command add flow
ovs-ofctl add-flow br0
cookie=1,nw_src=10.190.30.2,nw_dst=10.190.30.5,ip,actions=mod_vlan_vid:9,NORMALbut
it did not work. You tell me the vnet1 and vnet3 is access port ,not trunk
port,but I can not find in the documentation how to define a port access port
or trunk port .Plus vlan tag on the port is access port, without is the trunk
port? I read ovs-vswitchd.conf.db.5 document , at Port Table part,VLAN
Configuration:vlan_mode : optional string, one of access,
native−tagged,native−untagged, or trunkthen I set vnet1 and vnet3 vlan mode is
trunk,they can communication,did not set any flow.when I read FAQ,Q: My
OpenFlow controller doesn't see the VLANs that I expect.
A: The configuration for VLANs in the Open vSwitch database (e.g. via
ovs-vsctl) only affects traffic that goes through Open vSwitch's
implementation of the OpenFlow "normal switching" action. By
default, when Open vSwitch isn't connected to a controller and
nothing has been manually configured in the flow table, all traffic
goes through the "normal switching" action. But, if you set up
OpenFlow flows on your own, through a controller or using ovs-ofctl
or through other means, then you have to implement VLAN handling
yourself.
You can use "normal switching" as a component of your OpenFlow
actions, e.g. by putting "normal" into the lists of actions on
ovs-ofctl or by outputting to OFPP_NORMAL from an OpenFlow
controller. In situations where this is not suitable, you can
implement VLAN handling yourself, e.g.:
- If a packet comes in on an access port, and the flow table
needs to send it out on a trunk port, then the flow can add
the appropriate VLAN tag with the "mod_vlan_vid" action.
- If a packet comes in on a trunk port, and the flow table
needs to send it out on an access port, then the flow can
strip the VLAN tag with the "strip_vlan" action.this tell me
"implement VLAN handling yourself",OpenvSwitch does not support inter-vlan
communication or I use ovs-ofctl command implement VLAN handling.please
answer,thanks.
韩金朋
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