a fragile flow is a flow that sends out very few packets, or very little 
data. so even if it recieves congestion notification, it might not really 
be able to adapt its throughput.
A non adaptive flow is a rogue flow. it could be any application sending 
out anything, but when it receives an indication to slow down, it simply 
ignores it.

hope this helped.
- avinash


At 10:30 AM 9/11/2002, Eizen Kimura wrote:
>Hi all,
>
>To prepare for MCAST+QOS test,I now read IP QoS perfect guide
>and Boson matrials.
>
>I see flow-based WRED description as follows:
>
>The three type for flow-based WRED are:
>
>Robust - Flows that readily adapt to packet loss
>Fragile - Flows that are not able to adapt packet loss
>Nonadaptive - Flows that do not adapt to packet loss
>
>I wonder the difference between Fragile and Nonadaptive.
>
>Any help or pointer for this feature description appriciated.
>Kind Regards.
>
>-- Eizen Kimura




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