RE: [dhcwg] Leasequery: should it be standardized?

And, ARP refreshes only work if the two devices (access + client) are on the
same physical network segment. That's I think one other reason ARP isn't a good
solution for this.

- Bernie

-----Original Message-----
From: Kim Kinnear [mailto:kkinnear@cisco.com]
Sent: Wednesday, February 26, 2003 3:59 PM
To: Ted Lemon; Kim Kinnear
Cc: dhcwg@ietf.org; Ralph Droms; Thomas Narten
Subject: Re: [dhcwg] Leasequery: should it be standardized?

At 03:30 PM 2/26/2003, Ted Lemon wrote:
>>If you believe that there is any value in standardizing the
>>leasequery capability, please at least respond to this list ASAP
>>with your positive support.
>
>Yes, DHCPLEASEQUERY is a good thing, and I support it.   I don't know how to address Thomas' complaints about its relevance to the WG charter - perhaps it should be advanced in some other WG, or independent of a WG - but it's certainly a good idea, and certainly whether or not there is some other WG in which it need also be discussed, it was highly appropriate to raise it here, since it is an extension to DHCP, and this is where the DHCP expertise is concentrated.

        Thanks.  Of course I agree, or I would never    
        have bothered to spend time on it.

>My recollection, though, was that back in the beginning of all this, DHCPLEASEQUERY was about providing a way to refresh the ARP cache of a concentrator without having to broadcast an ARP request to every one of the concentrator's ports.   Is that no longer the case?

        Strangely, that was never actually the reason that I
        thought we were doing leasequery.  ARP is mentioned in
        the draft as an inadequate solution to recovering IP
        address <-> MAC address relationships originally
        discovered by DHCP "gleaning".  Perhaps that is
        synonymous with refreshing the ARP cache.  Certainly that
        involves the same information, but perhaps the use to
        which an ARP cache is put is not the same as the use to
        which the IP address <-> MAC address relationships
        discovered from DHCP gleaning is to be put.

        Cheers -- Kim

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