hi Ben:
How should I add a flow to make two virtual machines Ping pass, please help.
Thank you!




韩金朋

From: Ben Pfaff
Date: 2013-01-31 23:31
To: ??????
CC: discuss
Subject: Re: [ovs-discuss] ovs-ofctl questions
On Thu, Jan 31, 2013 at 04:28:13PM +0800, ?????? wrote:
> hi all:
>     I have two  virtual machines ,they have a different vlan tag,asfollws
> 
> [root@node50 ~]# ovs-vsctl show
> 98dd8985-540b-4838-a321-11006fa96694
>     Bridge "virbr0"
>         Port "virbr0-nic"
>             Interface "virbr0-nic"
>         Port "virbr0"
>             Interface "virbr0"
>                 type: internal
>     Bridge "br0"
>         Port "br0"
>             Interface "br0"
>                 type: internal
>         Port "vnet1"
>             tag: 20
>             Interface "vnet1"
>         Port "eth0"
>             Interface "eth0"
>         Port "vnet0"
>             tag: 10
>             Interface "vnet0"
>     ovs_version: "1.7.1" 
>    
>    I used the ovs-ofctl to modify the vnet0 vlan tag, as follows 
> 
>    [root@node50 ~]# ovs-ofctl add-flow br0 
> idle_timeout=0,in_port=2,actions=mod_vlan_vid:20,output:3("3" is vnet1 port)
>    
>    Then I used ovs-dpcta View package,
>    
> in_port(2),eth(src=02:00:0a:01:00:05,dst=ff:ff:ff:ff:ff:ff),eth_type(0x0806),arp(sip=10.1.0.5,tip=10.1.0.1,op=1,sha=02:00:0a:01:00:05,tha=00:00:00:00:00:00),
>  packets:65, bytes:2730, used:1.148s, actions:push_vlan  (vid=20,pcp=0),3
>    
>     the vlan id has changed to 20 ,but two virtual machines to each other or 
> the ping fails.

The flow you added doesn't make much sense.  You defined vnet1 as an
access port but your flow treats it as a trunk port by sending it a
packet with a VLAN tag.
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