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need Guidence to make intelligent switch with DM648

Ahmed 10245
Intellectual 450 points


hello all,  I am working on DM648 with ndk1.92. I want to implement an intelligent switch application with the involvement of DSP processor of the topology mentioned below

   data from LAN ----->port0 (PHY 1) of dsp ------>port2( DSP processor) --------->port1(PHY 2) --------> to the PC

and similarly

To LAN <-----port0 (PHY 1) of dsp <------port2( DSP processor) <---------port1(PHY 2) <-------- data from PC

in a full duplex fashion. Now could u plz guide which NDk program i.e (cfgdemo,client , hello world or anyother ) should I use.

I had tried alot on helloworld application but it has been configured in normal mode(i.e data do not go to DSP ) do anybody know how to configure it in bypass mode?

Note that I do not need  DHCP,HTTP or any other server client application out of it.

Waiting for ur reply

Regards

Ahmed

 

 

 

 

 

 

 

 

  • TI__Expert 8250 points

    ahmed,

    It is not very clear from your description, what is the role of DSP in the traffic flow that you have described. If you just want the traffic from the LAN be forwarded to the PC(and vice-versa) this can be managed transparently  by the switch fabric without any CPU involvement(since it is managed completely in HW, we should be able to sustain very high throughput in this mode).

    The traffic will be forwarded to the CPU(DSP) only if it is the designated recipient (like for example ping, echo packet with destination address matching DSP IP address)

    Regards

    Sriram

  • in reply to Srirama Govindarajan
    Intellectual 450 points

    Thank u Sir for the Reply as I was anxiously waiting for any reply. No doubt the switch fabric work very well with tremendous throughput but my problem is that I want to monitor, as well as alter  the data going from my PC to LAN keeping the board as a transparent device so I need data to be routed via DSP board .Can u plz suggest any basic application to do it & what maximum throughput would I be able to achieve if data is moved in the aforementioned topology. Again  I just need to route data with some change in it I donot require complex decisions from DSP or server/Client relationship.Plz do let me know if there is any confusion in the defined problem.

    Waiting for the Reply

    Regards

    Ahmed