Re: [dhcwg] DHCP server deleting the IP-MAC binding entry
pavan_kurapati <pavan_kurapati@infosys.com> Fri, 09 October 2009 05:09 UTC
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From: pavan_kurapati <pavan_kurapati@infosys.com>
To: girish gupta <girishkg@gmail.com>, "dhcwg@ietf.org" <dhcwg@ietf.org>, GAURAV HALWASIA <gauravh278@yahoo.co.in>
Date: Fri, 09 Oct 2009 10:40:41 +0530
Thread-Topic: [dhcwg] DHCP server deleting the IP-MAC binding entry
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Subject: Re: [dhcwg] DHCP server deleting the IP-MAC binding entry
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Girish, Check RFC 3203 for DHCP FORCERENEW message which you can use for the below scenario. Thanks, Pavan > -----Original Message----- > From: dhcwg-bounces@ietf.org [mailto:dhcwg-bounces@ietf.org] On Behalf > Of girish gupta > Sent: Friday, October 09, 2009 10:35 AM > To: dhcwg@ietf.org; GAURAV HALWASIA > Subject: Re: [dhcwg] DHCP server deleting the IP-MAC binding entry > > Hi Gaurav, > > What I proposed is the quick convergence of DHCP database on Clients > and DHCP Snooping switches to be consistence with DHCP Server > database. > Existing mechanism do not provide any such mechanisms. Another point > is that since the binding entry is being deleted from DHCP server, > DHCP server can offer the same IP address to some other new clients > and client SHOULD have been implemented for sending ARP request for > detecting the already assigned IP addresses else it will add to more > confusion.... > > Thanks, > Girish > > > > On Thu, Oct 8, 2009 at 2:32 PM, GAURAV HALWASIA > <gauravh278@yahoo.co.in> wrote: > > Hi Girish, > > > > As per protocol DHCP Server will not send any DHCP message to client > in case > > adminitrator manually clears the DHCP bindings. > > > > DHCP clients will get re-initialized automatically after it's renew > requests > > will not get responded. It might not be great idea to force the > client to > > release the IP address before the lease time gets expired. > > > > > > Regards, > > Gaurav Halwasia > > > > ________________________________ > > From: girish gupta <girishkg@gmail.com> > > To: dhcwg@ietf.org > > Sent: Thu, 8 October, 2009 2:16:28 PM > > Subject: [dhcwg] DHCP server deleting the IP-MAC binding entry > > > > Hello Experts, > > > > I read RFC 2131 and have the following query - > > > > If the administrator manually deletes the dhcp IP-MAC binding entry > > from the DHCP server database, is there any DHCP message generated > for > > it? I think it is not generated. Please let me know if we are missing > > anything. Will it not be a good idea to generate a new DHCP message > > which can flush the state of DHCP clients/DHCP Snooping switches and > > re-initialize their state machines? > > > > Please let me know your thoughts. > > > > Thanks, > > Girish > > _______________________________________________ > > dhcwg mailing list > > dhcwg@ietf.org > > https://www.ietf.org/mailman/listinfo/dhcwg > > > > ________________________________ > > Keep up with people you care about with Yahoo! India Mail. Learn how. > _______________________________________________ > dhcwg mailing list > dhcwg@ietf.org > https://www.ietf.org/mailman/listinfo/dhcwg **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS***
- [dhcwg] DHCP server deleting the IP-MAC binding e… girish gupta
- Re: [dhcwg] DHCP server deleting the IP-MAC bindi… GAURAV HALWASIA
- Re: [dhcwg] DHCP server deleting the IP-MAC bindi… girish gupta
- Re: [dhcwg] DHCP server deleting the IP-MAC bindi… pavan_kurapati
- Re: [dhcwg] DHCP server deleting the IP-MAC bindi… Ted Lemon
- Re: [dhcwg] DHCP server deleting the IP-MAC bindi… girish gupta