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New Member

How to add latency on test network ?

Hi ,

I would like to simulate internet latency between a client-server


(adding 200ms)

I tried putting 2 routers back-to-back between them but the only thing i


available is two 1720 with a T1 module . And it does not add much


I look in the available serial interface command , there is a delay

command but

the max delay is about 2 ms .

Does anyone have an idea on how to accomplish my goal ?


New Member

Re: How to add latency on test network ?

Finaly got the solution , i had to plug the AUX back-to-back not the


New Member

Re: How to add latency on test network ?

How does this ADD latency at a 200ms level? All you've really done is lower your bandwidth. You are just requiring more packets and app turns to give you the appearance of latency. The Aux port isn't going to let you control latency.

I would recommend purchasing a T1 simulator.


New Member

Re: How to add latency on test network ?

Definitely the best way we have found (free) to simulate WAN connections is by using NIST Net. In addition to intriducing latency, yuou can intriduce other things such as packet loss, etc.

Here is a link

Good Luck


Re: How to add latency on test network ?

The only way that you are going to get a 200ms delay is to purchase a satelite simulator. That is what I assume you are wanting to simulate in your test network. The delay command is nothing but for using in routing protocols and adding packet loss to the network isn't going to add delay either, its just going to add packet loss. Just to a serch for the device and you will find a lot of companies that sell them.

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