Good morning. I have a router 2610 with one 1 Ethernet and 1 Serial interface. I have 10 clients, each of them are connecting with Internet through the router ethernet and have 4 ip's, one in the server of the client, and the other in the ethernet as a secondary ip.
The questions are:
How can I do to control de output traffic of the clients transmitting to my ethernet?
What is better, a traffic shape in the ethernet or serial? a rate-limit?
That is the difference between Traffic-shape and Rate-limit?
Sometimes the cpu proccess increases, but i could controll it through memory re-assignment. I want that you help me please with some helpful information to controll de traffic. Than you very much for your attention,
here is a brief explanation of the differences between both:
(Generic)Traffic Shaping allows you to control how fast packets are sent out an interface, any interface. You might want to do this to avoid congestion either locally or elsewhere in your network, for example if you have a network with different access rates or if you are restricting some traffic to a fraction of the available bandwidth. For example, if one end of the link in a Frame Relay network is 256 Kbps and the other end of the link is only 128 Kbps, sending packets at 256 Kbps at the very least causes congestion.
Committed Access Rate (CAR) has two functions:
Packet Classification, using IP Precedence and QoS group setting
Access Bandwidth Management, through rate limiting
So CAR is basically the input side of Traffic Shaping (which we've talked about somewhat in a prior Frame Relay article).
Traffic is sequentially classified using pattern matching specifications, just like access lists, on a first-match basis. The pattern matched specifies what action policy rule to use, based on whether the traffic conforms . That is, if traffic is within the specified rate, it conforms, and is treated one way. Non-conforming (excess) traffic can be treated differently, usually either by giving it lower priority or by dropping it. If no rule is matched, the default is to transmit the packet. This allows you to use rules to rate limit some traffic, and allow the rest to be transmitted without any rate controls.
In your situation, it would not make much of a difference wether you would use CAR or GTS. You also could configure Class-Based Weighted Fair Queuing.
Here is a configuration example for each option.
Generic Traffic Shaping
access-list 101 permit ip host 192.168.1.1 any
traffic-shape group 101 1000000 125000 125000
This would limit the bandwidth for IP address 192.168.1.1 to 1000000 bits, with a burst size of 12500 bits, and an excess-burst of 125000 bits.
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