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SSG20 DHCP & DNS ?

SSG20 DHCP & DNS ?

(OP)
I have been configuring an SSG20, and I seem to have a problem with the DHCP discovery process when a client WS renews the lease. I have read thru the Fundamentals volume 2, in the areas on DHCP and DNS, but am confused since I can't find any info that explains how "set dns host dns1 4.2.2.2 src-interface bgroup0" functions. Is it global for the bgrp0 or what? After the lease expires, and renewal takes place I get event msg like: 2009-09-24 11:40:31   system   info  00527  DHCP server on interface bgroup0 received DHCPDISCOVER from 00115ba747aa requesting out-of-scope IP address 10.166.246.166/0.0.0.0. When I checked the WS control panel for the network connection in Windoz, I found NO DNS assignment. I tried several things, but no luck, unless I populated the DNS in the control panel. So I tried setting the DNS field in the assigned DHCP server for bgrp0 (set interface bgroup0 dhcp server option dns1 4.2.2.1), and it worked then, after using the repair function of the WS control panel.

Does anyone have an explanation of the relationship of the DNS being sent with the DHCP Discovery for a bgrp?

If I set the DNS in the DHCP server, do I need the "set dns host..." enabled?

In the Juniper documents there seems to be a disconnect of their examples. The explanations don't go far enough to qualify the needed requirements versus default in trying to understand some of the logic of needed or not for a given process.

Thanks in advance for any input...

....JIM....

 

RE: SSG20 DHCP & DNS ?

Let me take a look Jim, I've had some confusion about SSGs DHCP/DNS relationship also. I think one setting is for using the SSG as a DNS proxy/forwarder (your clients would have the SSGs IP Address as their DNS server) and one is to assign DNS servers to DHCP clients. I'll see what I can come up with...

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