what are the disadvantages of DHCP on router?

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May 29th, 2007

We are planning to run DHCP on a router for 5 VLANs with 20 users on each VLAN.

Is it a good idea?

I have this problem too.
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Richard Burts Tue, 05/29/2007 - 07:31

I believe that it is an ok idea. Whether it is a "good" idea depends on what alternatives you compare it to and what criteria are important to you. You can run DHCP on the router and perhaps avoid the need to have an additional piece of equipment in the network. Perhaps that makes it a good idea. Running DHCP on the router will make the router more busy and consume some additional memory. If that impacts performance it makes it a less good idea. If you want to track DHCP utilization more DHCP servers probably have better reporting mechanisms that the router does for DHCP.

You know your environment and your requirements much better than we do. Since we do not know what kind of router it is, and do not know what other kind of load you may ask it to handle, we are not in a good position to say "good" idea or not.



chris.lepa Tue, 05/29/2007 - 10:11

The only disadvantage to running DHCP on a router is that it will take up some memory/cpu utilization that might be needed to route traffic :) . Depending on the model you have though, it shouldn't be a problem.


smallrain_2 Tue, 05/29/2007 - 10:35

We are using 2800 with 256M RAM, so CPU/Memory shouldn't be a problem.

But I am worried about basic troublshooting and reporting part. I am fine if router supports all "must have" features.


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