On Mon, Jan 26, 2009 at 12:49 PM, Marlon Duksa <[email protected]> wrote:
> Hi - Can someone tell me what is the exact difference between line cards, > for example ES20 for 7600, with DFC3C and the XL version of the same? > Is it only a DDRAM or is it something else? I know that the > scaling numbers are higher on the XL version of the cards but not sure if > there is anything else on those cards except the memory that makes it > larger? Or is it TCAM? Whatever it is, it looks to me that it is only the > external memory in question and nothing inherent to the chips (EARL for > example).. The difference si the same as a Sup720 (or RSP) with a PFC3C or PFC3CXL. It's all about the size of the routing table. The DFC3C can only hold aprox 256K routes (this will vary based on your configuration/defaults etc). The DFC3CXL can hold approx 1M routes (again check the TCAM configuration guide on how to allocate TCAM amongst protocols). All DFCs/PFCs will run at the lowest common demonitor. So If you have a RSP720-PFC3CXL and a ES20 with a DFC3C in it the entire system will be limited to the TCAM size of the DFC3C. Also if you are buying new, please look into the ES20+ which has many improvements over the ES20. -Brandon Bennett _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
