This informational draft explores the issue of fair allocation of excess network bandwidth between congestion sensitive and insensitive flows in an Assured Forwarding traffic class. In the absence of any mechanism to distinguish between out-of-profile traffic of congestion sensitive and insensitive flows, congestion insensitive flows will get most of the excess network bandwidth. However, if out-of-profile packets of congestion sensitive and insensitive flows are 'colored' differently, network can be configured so as to give better treatment to excess packets of congestion sensitive flows and achieve fair allocation of excess network bandwidth. With a view to clearly distinguish between out-of-profile packets of congestion sensitive and insensitive flows, three levels of drop precedence are required. However, if the network operates close to its capacity, three levels of drop precedence are redundant as there is not much excess bandwidth to be shared.
Complete contribution in Plain text (41,019 bytes)
IETF Presentation slides in PostScript (1,044,759 bytes, 2 slides/page) | Adobe Acrobat 3.0 Format (121,454 bytes, 2 slides/page) | PKzip Compressed PostScript (73,223 bytes, 2 slides/page) | Adobe Acrobat 3.0 Format (110,957 bytes, 6 slides/page) | PostScript (1,032,818 bytes, 6 slides/page) | PostScript (1,059,833 bytes, 1 slide/page) | Adobe Acrobat 3.0 Format (130,403 bytes, 1 slide/page)