Re: [dhcwg] One comment on draft-ietf-dhc-3315id-for-v4-05.txt

Yes, I understand about IAID. I guess what I was trying to say is that 
we have to be careful at how the "multiple identities" problem is 
addressed as the DHCP server/client does not know how the user will use 
the different network interfaces. If I just want to switch between wired 
and wireless in the same subnet, having the same IP address for both 
interfaces might be a good idea (same identity and no intermittent 
connectivity), however if I want to use the two interfaces at the same 
time, then I need to have two different IP addresses.

-Andrea

Bernie Volz (volz) wrote:

>That's why there is an Identity Association included.
>
>The DUID identifies the client (and it is one identity instead of many).
>
>The Identity Association is the second piece of the identity. So a
>client that has multiple interfaces has (at least) a unique identity
>association for each of those interfaces. (Client may have more identity
>associations if they wanted multiple addresses PER interface.)
>
>- Bernie 
>
>  
>
>>-----Original Message-----
>>From: dhcwg-bounces@ietf.org [mailto:dhcwg-bounces@ietf.org] 
>>On Behalf Of Andrea G Forte
>>Sent: Thursday, November 10, 2005 3:55 PM
>>To: dhcwg@ietf.org
>>Subject: [dhcwg] One comment on draft-ietf-dhc-3315id-for-v4-05.txt
>>
>>I have not followed the exchange of comments regarding this draft, so 
>>please forgive me if this issue has already been discussed. 
>>However, one 
>>comment I have is that this draft seems to be useful only if 
>>I have more 
>>than one network card on the same subnet (the change of 
>>chassis and/or 
>>the change of NIC are less common especially nowadays with 
>>more and more 
>>devices with built-in wireless/wired ethernet). In many 
>>cases, wireless 
>>and wired networks belong to different subnets, in such a 
>>case we would 
>>still have different IPs on different NICs, so the client would still 
>>appear as it has intermittent connectivity when switching from one to 
>>the other. Furthermore, if we have the two cards (wireless 
>>and wired) on 
>>the same subnet, using the same IP address on both would 
>>create a lot of 
>>problems if (for whatever reason) I decide to use both of the 
>>cards at 
>>the same time.
>>
>>-Andrea
>>
>>
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>>    
>>

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