[j-nsp] GRE & Bridging, is it possible with a Juniper box ?

[Derick Winkworth]

This sounds like what Cisco is doing with OTV.  They are using ethernet over GRE w/multicast to transport ethernet... It is being marketed as a better alternative to VPLS.



________________________________
From: Pekka Savola <pekkas at netcore.fi>
To: Patrik Olsson <df at webkom.se>
Cc: "juniper-nsp at puck.nether.net" <juniper-nsp at puck.nether.net>
Sent: Thu, June 3, 2010 4:59:26 AM
Subject: Re: [j-nsp] GRE & Bridging, is it possible with a Juniper box ?

On Thu, 3 Jun 2010, Patrik Olsson wrote:
> Have you tried looking for L2TP with PPP over BCP intestead PPP over IPCP?
> 
> If you want to encapsulate the whole ethernetframe and send over a GRE
> tunnel so you get a bridged enviroment, is it called Ethernet over IP
> (EOIP). Dont remeber the rfc, but is not supported by Juniper. Only
> supported by a small Latvian vendor I think...

I wonder if you refer to rfc3378.  I recall support for it was recently added in Linux as well.

But I don't see why encapsulaitng whole ethernet frames in GRE could not work if vendors just chose to support it.  Then as 'ether type' in GRE header you could put 0x6558 or 0x8100 (IEEE 802.1q VLAN-tagged frames *). The former is also supported in Linux [http://lwn.net/Articles/303062/]

*) http://www.iana.org/assignments/ethernet-numbers

-- Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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