On 25 May 2012 11:00, Richard Patterson
The LFC makes the distinction based on PCP bits, using PCP 4 to identify "Discard Ineligible" frames. If there's >CIR being sent, and the link is hitting congestion, then frames not marked, or marked with a different value, will be dropped first.
If the the RSP or CPE don't mark any frames as discard ineligible, then the LFC can drop any frame it feels like.
Hmm, since I don't see Customer in there (except as a description of equipment location, it may or may not be the ONT) it all seems rather moot from the customer's perspective. As discussed elsewhere, this seems to be a method to guarantee the performance for some RSP denominated services, the e.g. VOIP. Would streaming video be put in this slot too? So as a customer of an Internet service you get 2.5Mbs CIR, less whatever this L2 tagging filches from you as it has the first bite of the cherry? Committed in the first instance to the RSP/LFC, not you the customer. Or have I got this horribly wrong. Hamish. -- http://about.me/hamish.macewan