[ovs-discuss] Ethernet over GRE tunneling?
陈文龙
qzchenwl at gmail.com
Thu Aug 12 02:21:55 UTC 2010
I want to set up the network topology like:
+---------+ 1.1.1.1 2.2.2.2 +---------+
| Router |----- Public network ---- | Router |
+---------+ +---------+
| |
+---------+ +----------+
| Switch | | Switch |
+---------+ +----------+
| |
+-------+ +----------+
| Host1 | | Host2 |
|-------| |----------|
|OVS | |OVS |
|VM1 VMx| |VM2 .. VMy|
+-------+ +----------+
192.168.1.10 192.168.1.20
I want to build GRE tunnel between 1.1.1.1 and 2.2.2.2,
so that, a packet 192.168.1.10 broadcasts can be broadcast to 192.168.1.20.
And VM1 regards VM2 as a LAN member.
If the tunnel takes the dot1Q tag, that's better.
How to configure OVS to implement that?
2010/8/12 Jesse Gross <jesse at nicira.com>
> On Wed, Aug 11, 2010 at 2:13 AM, 陈文龙 <qzchenwl at gmail.com> wrote:
>
>> What is the different with Implement GRE Protocol ?
>> Does OVS have any advanced features than GRE?
>> Is OVS able to take a broadcast packet and go through GRE tunnel and
>> broadcast in another subnet?
>
>
> GRE is a standardized protocol so there aren't really "advanced features"
> per se. However, the Open vSwitch implementation supports a large number
> tunnels and has significantly higher performance when compared to other
> implementations.
>
> GRE is just tunneling Ethernet frames between switches so a broadcast
> packet will be broadcast by a remote switch, regardless of where it is.
>
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