[Xorp-hackers] Fwd: [Xorp-users] how FEA interacts with underlying forwarding plane?

sharda saiwan shardasaiwan at gmail.com
Mon Apr 27 22:39:39 PDT 2009


On Fri, Apr 24, 2009 at 5:32 AM, Bruce Simpson <bms at incunabulum.net> wrote:

> sharda saiwan wrote:
>
>>
>> i want to run FEA and the forwarding plane on different machines (as per
>> my understanding its not possible in the current version), what changes need
>> to be done in FEA??
>>
>
> That's not possible; the FEA process is the one responsible for
> communicating with the forwarding plane -- decoupling the FEA and forwarding
> plane makes no sense in the XORP model, as the FEA's role is to encapsulate
> the forwarding plane in a way which the other XORP processes can communicate
> with.
>
> I can't speak for the specifics of Click, though, I am under the impression
> it also has to run on the same node.
>
> thanks,
> BMS
>




Hi Bruce,

Actually I am talking about the separation of control plane and data plane.
According to the separation concept (the ForCES framework), to control and
configure the data plane, the control plane should consist of an image of
the underlying data plane (which includes attributes, capabilities and state
information).

In this separated control and data plane framework, if we use XORP as a
routing daemon, then FEA is the process that contains all these information.
So, I think FEA should be placed in control plane and the forwarding/data
plane will run on a different system.

Please suggest how XORP can be used in the above scenario.



Thanks & regards,

Sharda Saiwan
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