DHCP relay IP and gateway IP, possible bad logic?

Igor Smitran sigor at blic.net
Tue Mar 5 10:06:19 CET 2013

On 03/04/2013 11:03 PM, Phil Mayers wrote:
> There are a bunch of subtleties in this whole area - some devices 
> offer knobs to control giaddr in the case of multinettings, and some 
> devices offer knobs to control srcip - but, in my experience, you are 
> asking for trouble if giaddr is not valid for accepting relayed 
> replies. We've had significant problems with setups where this is 
> difficult or impossible to achieve as a result. Multinetting a private 
> and public range onto the same interface falls into exactly that 
> category.
> -
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Yes, i aggree. But, CM's are in private network. CPE's are behind CM's, 
in public network. CPE's are connected to CMTS through CM's. Because of 
that you have public and private network on one interface.

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