[Noisebridge-discuss] Linux Ethernet-over-IP tunnels

[Ryan Castellucci]

Newer versions of linux and iproute2 support standard ethernet over ip.

ip tunnel add mode etherip local [localip] remote [remoteip]

on both ends with the remote and local addrs reversed.

This has no encryption.  Just a naked ethernet frame wraped with a
tasty ip header.

On Sat, Sep 12, 2009 at 4:59 PM, Jonathan Lassoff <jof at thejof.com> wrote:
> Excerpts from Rodney Thayer's message of Sat Sep 12 09:58:09 -0700 2009:
>> ok someone else already used "sexy" and "ethernet frame" in the same
>> post so I can do it too ;-)
>>
>> I believe another sexy way to do this is to run MPLS and let the kernel
>> pump the frames over IP just like an MPLS cloud would.  I've not done
>> this.  I just checked and there was (as of Fedora 8...) some MPLS Linux
>> kernel work.
>
> Using MPLS as a network-layer-ish forwarding mechanism makes sense for
> what I'm doing. In fact, it's what I'm trying to replace. :)
>
> There's some limited vendor support for using multiprotocol BGP to
> compute a topological mesh of MPLS-labeled tunnels between provider-edge
> routers. Perfect for scaling out "virtual" LANs. But this requires
> expensive hardware and software, so I'm trying to see if I can make
> something similar with free software.
>
> From what I can find (mind you I've yet to give this an actual test),
> Linux supports forwarding/routing MPLS labeled frames, but doesn't yet
> support Martini-draft style encapsulation of arbitrary data link layer
> formats.
>
> Looks like some code needs to be written :)
>
> --j
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-- 
Ryan Castellucci http://ryanc.org/