[ovs-discuss] Ethernet over GRE tunneling?

Jesse Gross jesse at nicira.com
Wed Aug 11 18:26:24 UTC 2010


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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