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New Member

Application & QoS

Hi friends,

I have a question for you.

I work with an application that runn over telnet protocol. I have a link with 2 Mb BW, and I need that this application only uses a 50% of 2 MB=1MB, but I have others application that are prioritaries over this telnet application, so, if others application need to use more BW that 1 MB, can use without problems. How can Implement it? Which QoS feature can I use?

Regards and Thank you very much


Re: Application & QoS

You will want to use traffic policing to limit the bandwidth used by telnet. This is done by creating a class-map that matches telnet traffic, creating a policy-map that polices traffic in the class map and assigning the policy-map to an interface with the service-policy command. Take a look at the following link.

Hope this helps. If so, please rate the post.


Re: Application & QoS


you could use a combination of CBWFQ and shaping. Shaping limits an application to a maximum bandwidth. The advantage over policing would be no dropped packets - instead they are queued. CBWFQ gives minimum bandwidth guarantees to applications. An example config could look like this:

class match-all Telnet

match protocol telnet

class class-default

match any

policy-map OUT

class Telnet

shape average 1024000

class class-default

bandwidth 1500000

interface Serial0

bandwidth 2048

service-policy output OUT

Instead of class-default you could use another class describing your priority applications.

Hope this helps! Please rate all posts.

Regards, Martin

New Member

Re: Application & QoS

Thank you very much, with this config..Telnet aplication can use more than 1 MB of BW?? The rest of application can use more than 1 MB??

Best regards