From: Joe Chang (changjoe@earthlink.net)
Date: Thu Jun 10 2004 - 16:46:18 GMT-3
> Am I correct in my understanding that the 75% allocation rule will
allocat the remaining un-allocation BW proprotionally among all the classes?
How much BW would the default class receive?
The way I try to understand CBWFQ is that it is WFQ with a "tunable" weight.
In WFQ the IP Prec of each packet influences the order of that packet's
transmission. In CBWFQ this feature is replaced by the "bandwidth"
statement, which the docs say translate into a weight. As in WFQ, the
resulting percentage share the flows will get will vary depending on the
makeup of the traffic.
> So what happens if my CIR drops to 1024K and I still need to support the
video conferencing @ a decent rate and must provide 256K for important apps.
Do I dare change the maximum reserved bandwidth or do I drop the H.323 rate
to 512K from 576k? Is the 25% ip overhead from the CCO doc 'double counted'
via the 75% rule?
If you do change the maximum reserved bandwidth it will increase the changes
that control traffic is be dropped or time out. Depending on the importance
of the router in question, what would be the consequences? If you drop the
H.232 rate will service suffer noticeably? If your important apps are TCP
based, would they not be able to recover from drops and automatically reduce
their rate of transmission?
This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:37 GMT-3