Thanks, What i need is to configure QOS for the following:

- Mail

- Client Server Application 1

- Client Server Applicaiton 2

- Internet Browsing

FYI, Our mail & proxy server are located at HO

many thanks in advance

Regards

Winanjaya

Hi,

What is the connectivity technology between the routers (FR, MPLS, leased, ...), what is the bandwidth of each site, and what is the bandwidth that you wish to guarantee for each traffic type.

BR,

Mohammed Mahmoud.

Thanks,

Connectivity between routers is E1 leased line channel

HO to Branch A is 2 MB

HO to Branch B is 2 MB

HO to Branch C is 2 MB

HO to Branch D is 2 MB

HO to Branch E is 2 MB

this is for example:

Mail: 25%

Client Server Application 1 : 15%

Client Server Application 2 : 15%

Internet Browsing : 25%

Others : 20 %

Others meant undefined services.

many thanks in advance

Regards

Winanjaya

Hi,

Here you are a basic QoS configuration.

For your knowledge the QoS doesn't interact unless there is congestion on the link.

First Define the classes (for mail use the protocols you require from the following, for app1 and app2 use an extended ACL to define them)

!

class-map match-any mail

match protocol pop3

match protocol smtp

match protocol imap

match protocol secure-pop3

match protocol secure-imap

match protocol exchange

match protocol ldap

class-map match-all http

match protocol http

class-map match-all app1

match access-group 101

class-map match-all app2

match access-group 102

Assign each traffic class the appropriate bw:

policy-map qos

class mail

bandwidth percent 25

class http

bandwidth percent 25

class app1

bandwidth percent 15

class app2

bandwidth percent 15

class class-default

fair-queue

You then need to classifiy app1 and app2 traffic may be according to the port number used:

access-list 101 permit tcp any any eq

access-list 101 permit tcp any eq any

access-list 102 permit tcp any any eq

access-list 102 permit tcp any eq any

Apply the policy under each interface in the output direction:

interface serial 0/0

bandwidth 2048

service-policy output qos

I hope that i've been informative.

HTH, please rate using the below scroll box if it does help,

Mohammed Mahmoud.

Hi..

You wrote:

... the QoS doesn't interact unless there is congestion on the link...

did you mean that if there is no congestion on the link then the first come class will get full bw regardless the QOS ? pls advise

thanks & regards

Winanjaya

Hi Winanjaya

Whatever Mohammed told you is a congestion management which is one of many methods of QOS implementation. If your link isn't congestion(Hardware Queue full) then software queuing that you configured won't be used at all.

HTH

L.Thot

Hi Winanjaya,

Yes what i meant is that the congestion management tools that we've configured till now will only interact when there is congestion, which is fair, in the case that there is no congestion any traffic of them can talk more than what was guaranteed for him which is nice, but in the moment of congestion the values we configured are met, which is what we are looking for.

HTH, please rate if it does help,

Mohammed Mahmoud.

How about for App1, App2 they don't have static service port