QOS Config issue

Dhiraj Jagdale · ‎10-09-2016

Hii,

We have one branch with bandwidth of 512 Kbps, we want to prioritize traffic like below

First priority - Citrix traffic

Second priority - Mail and all other traffic

Now my question is that " Bandwidth" statement under QOS config is applicable here ??? Because i don't want to reserve the bandwidth, if both priority traffics are unavailable then bandwidth should be utilize to peak level for other traffic also.

Joseph W. Doherty · ‎10-10-2016

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Cisco QoS operation depends on platform and IOS, but in general, if your asking about CBWFQ, the bandwidth statement doesn't really reserve bandwidth, instead it guarantees a minimum when multiple classes compete for bandwidth.

For example, if two classes both had bandwidth 50 percent, if both wanted more than half the bandwidth, they would both get 50%, but if one only wanted the 25%, while the other wanted 100%, bandwidth should be split 25% to 75%.