Wan limit with QoS

[marcio.tormente]

Dear experts,

I know that my question can be very simple, but I need ask before make any mistake.

I need limiteda HTTP trafic from a WAN link (10mbps) to no more than 5mbps to a specific network.

I made this script and i would like to know if is correct.

ip access-list ext Traffic_QoS

permit ip 105.113.54.0 0.0.0.255 any eq http

!

class-map match-any QoS_HTTP

match access-group Traffic_QoS

!

policy-map Filter_HTTP

class QoS_HTTP

bandwidth percent 50

!

interface GigabitEthernet0/1

service-policy in Filter_HTTP

The interface G0/1 have this configuration:

interface GigabitEthernet0/1

description [ SELA Costa Rica L2  ]

ip address 105.113.52.1 255.255.255.0 secondary

ip address 105.113.53.1 255.255.255.0

ip nat inside

ip virtual-reassembly in

duplex auto

speed auto

h323-gateway voip interface

h323-gateway voip id XGK1 ipaddr 10.254.10.15 1719

h323-gateway voip h323-id D300807987_001

h323-gateway voip bind srcaddr 105.113.53.1

Thanks

Marcio

[Bilal Nawaz · Accepted solution]

Hello Marcio,

The bandwidth of your gig interface is 1000mb. 50% of this will be 500mb. So your policy will not work how you want it to work at 10mb

instead of bandwidth percent 50 you may need to shape.

policy-map Filter_HTTP

class QoS_HTTP

shape average 10000

This will only shape your http outbound traffic

Hope this helps

Please rate useful posts and remember to mark any solved questions as answered. Thank you.

[marcio.tormente]

Hello Bilial,

I forgot to change, my first intention was apply this policy at g0/0 that is internet link and the speed is 10mbps.

In your configuration the shape is 10000, but if the correct is not 5000?

thanks

[Bilal Nawaz]

Oh! I understand now! So you have 10mbps link on a gig interface, but you want to half it.

Yes you will use 5000 to limit http traffic at 5mbps, you are correct.

Hope this helps.

Please rate useful posts and remember to mark any solved questions as answered. Thank you.

[marcio.tormente]

Over G0/0 I have the internet link (10mbps) and G0/1 is the Lan interface (1gb).

Now I have a doubt, what is the best practice, apply on G0/0 as output or G0/1 as Input?

[Bilal Nawaz]

Hello, I would apply this, closest to the source as possible, so, inbound on your LAN interface.

Hope this helps

Sent from Cisco Technical Support iPhone App

[marcio.tormente]

Dear Bilal,

I made this configuration in my client and worked very well.

Thank you very much for all support.

[Bilal Nawaz]

You're welcome, Im glad this worked for you!

Please rate useful posts and remember to mark any solved questions as answered. Thank you.