[ale] Cisco 2600 DHCP config question

[Tim Meanor]

Yeah, the 2600 should be ignoring dhcp requests altogether.  I  
admittedly haven't configured a router in years.  I do remember that  
ip helper is used to direct dhcp broadcasts to a specific IP address  
that is not on the local subnet.  I was thinking that maybe the 2600  
had this enabled on its dev network interface.  If you don't get this  
figured out, maybe you could post the config (with the names changed  
to protect the innocent).

-Tim

On Apr 26, 2007, at 6:28 PM, Jim Popovitch wrote:

> On Thu, 2007-04-26 at 17:26 -0400, Tim Meanor wrote:
>> You need to use the ip-helper setting on the interface that is on the
>> dev network.  The syntax is something like:
>> ip-helper <dhcp server>
>> where <dhcp server> is the server where you want the router to send
>> DHCP broadcasts.  This is set per interface, so you'd set this on the
>> router interface on the dev network.
>
> The thing is, there should be no DHCP on the dev network.  Corp  
> network
> issues DHCP to clients, clients then directly hit Dev boxes via the  
> dev
> network gateway/firewall.  Do I really need to tell the router between
> dev and testbed that DHCP comes from the Corp router?  Ideally the  
> 2600
> would just not pass broadcasted DHCP responses... remember, these are
> two completely different subnets.  Hosts on the dev network that do
> request DHCP should not find any responses.
>
> -Jim P.
>
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