DFC3

[thefranmanatt]

From everything I read it seems like DFC is for forwarding packets.  When I hear packets I think of layer3.  If my 6500s are just being used as a big layer2 only switch do I need a DFC?  I am being told the 6500 looks at the layer 2 frame and the layer 3 patch header information before forwarding the frame.  How true is this?  thanks

[Reza Sharifi · Accepted solution]

It could be layer-2 or layer-3 forwarding.  Also some line cards do have the DFC build in and some older cards don't

Have a look at these 2 links:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_qanda_item09186a00809a7673.shtml#qa4

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd80673385.html

HTH