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New Member

DHCP and VLAN

Would you recommend having a 1721 act as a DHCP server for one part of the network several switches back or use a DHCP server in that isolated network?

5 REPLIES

Re: DHCP and VLAN

Adding DHCP to a router does add overhead, depending up on the number of clients that the server is serving. You should also look at what other processes (like Encryption, inter vlan routing, routing, other layer 3 services) that are running on the router. If the router is only handling DHCP requests, a 1721 would do fine.

New Member

Re: DHCP and VLAN

It's only doing routing, really. No inter-VLAN, no encryption, and no other layer 3 services that I can figure. The question is, *how* do I make it to DHCP for one interface and not another?

Purple

Re: DHCP and VLAN

Configure the network/mask within your DCHP pool to cover just that one interface....

Paresh

Re: DHCP and VLAN

ip dhcp pool test

network 10.10.10.0 /24

default-router 10.10.10.1

int fa0/0

ip add 10.10.10.1 255.255.255.0

int fa0/1

ip add 10.10.20.1 255.255.255.0

This pool Test will lease addresses only to client requests coming in on fa0/0.

HTH

Sankar.

New Member

Re: DHCP and VLAN

Oh! I didn't think it was possible to do that in this way. Thank you.

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