QoS- Bandwidth Management

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Mar 24th, 2008
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I deployed DHCP NAT on 2811 for providing Internet access for customers. My customers will be receiving private IP address but I don't want each customers to receive more than what they paid for (256kbps)per private IP address. How can I acchieve this? Will rate-limiting achieve this, if yes how can I implement it?

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spremkumar Mon, 03/24/2008 - 00:32
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do let us know how your customers are connected to your network.(are you talking about your internal or external customer)


thotsaphon Mon, 03/24/2008 - 01:11
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You can use policing qos method.If you want to do then you need to create a class of each private ip address. How many ip addresses do you want to assign to users? In your case you are using Nat as well so inbound policing should be fine because the NAT has been done before outbound queuing.

Just my thought,If you have many IP addresses then it's not practical.Some kinda bandwidth management box should be deployed.

Hopes this helps


exchange1 Wed, 03/26/2008 - 07:44
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Hi Thot,

My Customers are internal and they receive private IP address from my router. Each customers receive one IP address.

My sample config is as shown below:

interface FastEthernet0/0

description $FW_OUTSIDE$

ip address 78.XX.XX.XX

ip directed-broadcast

ip nbar protocol-discovery

ip nat outside

ip virtual-reassembly

duplex full

speed 100


interface FastEthernet0/1

description Connect $FW_INSIDE$ {Customers}

ip address

ip directed-broadcast

ip nbar protocol-discovery

ip nat inside

ip virtual-reassembly

duplex full

speed 100


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