DFC and no DFC(when should be installed)

[yingyot_wang]

I would like to know how can i check that interface board should install DFC board. what command can check it and what is the maximum value.

[amit-singh]

Hi Friend,

You need DFC's when you want a complete distributed architecture on the 6500 chassis.

6500 gives you 30 Mpps per system without the DFC's on the classic/fabric-enabled/Fabric only card's. If you have an environment where you have a high traffic usage, then you need DCEF cards. With DFC's daughter card on the module, you get 48 MPPS per slot and the overall performcace of the chassis increases upto 400+ Mpps.If you want your network core (6500's) with a high traffic should perform very well, you might thought of getting DFC;s for your modules.

With DFC's installed on the module, the complete L3/L2 tables gets downloaded to the module and it locally re-writes the packet without having to go to the Sup/CPu everytime. a DFC is a PFC which is similar to the one we have on the Sup engines.

HTH, Please rate if it does.

-amit singh

[yingyot_wang]

Can i check that when it should be install DFC. What a command can check. Thank you very much