A customer of us have a Cisco 1803 Router. Behind the Router he have 3 networks. The customer ask to us if it is possible to limit the wan bandwith per network. I have search on the internet but i can't if it is possible can someone tell me if it is possible and if it is can tell me how to do it?
Usually you do this with traffic shaping or policing and matching of the specific subnet. You have a very simple example below:
1. access-list permitting your 1st subnet (192.168.100.0/24 for exampl):
# access-list 1 permit 192.168.100.0 0.0.0.255
2. class-map matching your 1st subnet:
# class-map subnet1
# match access-group 1
3. police your matched subnet
# policy-map limitbandwidth
# class subnet1
# shape average 800000
# police 800000 10000 conform-action exceed-action drop
both lines above (shape and police) will limit your bandwidth to about 780kbits (it's just an example, you know how much bandwidth you have there and how you want to split it). For the 2nd subnet you need another class-map, policy-map and then you put it under the same policy-map.
You apply the policy-map under your out interface in direction out like this:
service-policy output limitbandwidth
This method does not provide a minimum bandwidth guarantee. For that you have to use bandwidth or priority under policy-map
Hope that this help, but you better read something about QOS to better understand.
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