博客介绍了IntServ集成服务和DiffServ区分服务，其中DiffServ包含EF加速型转发等。还提及Qos参数，如带宽、延迟等。同时介绍了Intserv基于流和状态无关的架构，以及DSCP、PHB等相关概念。
一. IntServ 集成服务
二. DiffServ 区分服务（DS)
EF expedited fowarding 加速型转发
三. Qos参数:带宽, 延迟/延迟抖动, 分组丢失
sevice level agreement
granularity
Intserv is the architerture based on flow and state relatless,rely on the state and managemant of each flow.
DSCP differentiated services codepoint
PHB: BE(best effort),EF(expedited forwarding), AF(assured forwarding), CS(class seletor), LBE(lower best effort),EFD(expedited forwarding with dropping),PHB-I(interoperability PHB group)
PSGR packet scale rate guarantee
open course http://www.cocw.net/index.htm
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