Cisco Saturate Interface

Hello Experts,

Can someone let me how to saturate the interface on my router from within the router?

For example, I have an interface with ip address 10.10.1.1 and to saturate the link I can simply ping the interface with large packet sizes. However, is there another way to saturate the link?

Cheers

Carlton
cpatte7372Asked:
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arnoldCommented:
You download/transfer a massive amount of data
Your QoS/Queueing policy ....
What are you looking to test?
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cpatte7372Author Commented:
Hi Arnold,

Thanks for responding.

Are you talking about tftp download? If so, I was hoping something far simpler than that.

Regards
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arnoldCommented:
To saturate the interface you need data crossing it.

Are you looking for a sustain data transfer saturating the interface?  What are you looking to test?

You would like to only saturate the LAN side without affecting the WAN side?
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cpatte7372Author Commented:
Hi Arnold,

I just want to saturate the LAN interface on a sustained basis....

Any thoughts?
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arnoldCommented:
The only way I think is to transfer data from the cisco or to the cisco. Or get external data transfer

if you have multiple interfaces in the cisco, create two VLAns one device connected to one and another to the other, and transfer massive amount of data between them where either downloads.

How long are you looking to saturate it. what systems are available to you?
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cpatte7372Author Commented:
Hi Arnold,

Thanks again for responding.

I'm looking to saturate for at least 5mins.

What are you suggesting?
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cpatte7372Author Commented:
Arnold,

I have multiple interfaces, but I have a single router. How do I transfer data between the vlans?
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JustInCaseCommented:
Set interface speed to minimum (on Fast Ethernet it is usually 10Mb) and from a few hosts in LAN transfer data through that interface (some big ISO file).
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arnoldCommented:
You have to use multiple devices at the same time since many devices have their own limiting scheme.  i.e. a workstation usually will not allow for more than 25% of network bandwidth to be consumed.

What is it you are trying to test?
What happens when interface saturation occurs, look at the queuing policy you are setting. FIFO, packets will be discarded, store and forward, the overage will be queued up......

reduce the bandwidth as Predrag suggested......
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giltjrCommented:
--> Can someone let me how to saturate the interface on my router from within the router?

You can't from within the router..  You have to do it from outside the router.  You need to have at least two other computers whose traffic must flow through the router.  

FTP is probably the easiest way to do this.  In order to saturate for 5 minutes you need to have a file that is large enough to take 5 minutes to transfer at the speed of the slowest interface on your router.  If you router has 1 Gbps interfaces, then you need a file that is over 30GB.  Or try and do two FTP's at the same time with files of 15GB.
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cpatte7372Author Commented:
Cheers
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