ICMP echo request.
Glenn Satchell
Glenn.Satchell at uniq.com.au
Sun Nov 18 11:22:10 UTC 2007
Wow! 3.0.1rc9 is truly ancient. There were about another half dozen
release candidates before 3.0.1 came out, then we got to 3.0.6 and
3.1.0. So that would be 6 or 7 years old at least. You really, really,
really need to upgrade.
The ping is "ping before offer" happens before offering an IP address.
That is, before replying to a DHCPDISCOVER.
When a renew comes in as a DHCPREQUEST, the device already has the IP
address, so a ping would always return true in this case.
In later versions an option was added to desable the
ping-before-offer.
regards,
-glenn
>Date: Fri, 16 Nov 2007 14:35:48 -0600
>From: <kenneth.reeves at verizon.com>
>
>Under what circumstances does the server ping an address to before
>assigning it to a client? If I read the book correctly, it will always
>ping the client. At first I thought it only pinged the address if there
>was an expired lease. Then I thought, that it may want to check to see
>if somebody accidently statically assigned an address in the pool to
>their client, not knowing it was in the pool. In such situations, it is
>good to ping no matter what the circumstances to determine if the
>address is in use. Also, does it act differently, with regard to a
>ping, for a renew vs. a request? I checked the archives as well, but
>didn't see anything there. I am using DHCP Server V3.0.1rc9. It works
>great BTW. If someone could direct me to an article or achieve, that
>would be great.
>
>Thanks,
>
>Ken Reeves
>
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