Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
New Member

How to make a qos policy, thats serves 6 class of traffic on Cisco 3845 one by one?


We have a buisses task to make some qos policy in our mpls backborn that consist of Cisco 3845 Version 15.1(1)T. We have six class of traffic + NC:

1) - NC

2) orange class

3) yellow class

4) green class

5) blue class

6) purple class

7) best-effort 

And we have 3Mbit\s links. We can't use bandwidth parametr, couse any class of traffic can use full bandwidth, but while congestion orage class should take 3Mbit\s no matter if other traffic. If there is no orange, yellow should take full bandwidth no matter if other traffic, and etc.

I tryed to use WRED, queue-limit but no any results. 


What strategy should i take to solve problem?


PS sorry for bad English.

Everyone's tags (1)
Super Bronze

DisclaimerThe Author of this


The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.


From what I think you're describing, old PQ (priority queuing - don't confuse with PQ on switches) would be what you want.  However, don't know if its still provided with 15.x IOS and it only supports 4 classes.

New Member

thank u,  Joseph. I think the

thank u,  Joseph. I think the same

CreatePlease to create content