[j-nsp] GRE on MX platform without Multiservices DPC?

[Richard A Steenbergen]

On Wed, Sep 08, 2010 at 06:16:17PM -0400, Clarke Morledge wrote:
> I *thought* that you can somehow "steal" resources from a line card to 
> create a GRE tunnel on the MX, but I have not found an example of how 
> to do that.  I do not need much bandwidth, so the Multiservices DPC is 
> just overkill for this application.

You don't need a Multiservices DPC to do tunneling.

On classic ADPC (I-chip) there are two scenarios:

* From a 10x1G PFE, you can create a "free" 1G tunnel as an "11th port".
* From a 1x10GE PFE, you can disable the port to create a 10G tunnel.

On Trio cards, you can create a tunnel interface without disabling any 
physical ports, though the best place to do it will be on the PFE where 
the packets are ingressing the router and need to be encapsulated.

-- 
Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
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