Re: [Roll] DAO lifetime

[Cenk Gündogan <[e-mail]>]

Hello Randy,

It seems like for the Non-Storing mode there is no "No-Path" DAO (DAOs 
with Path lifetime of 0) [2].

To quote section 9.7 section [2]:

3.  When a node removes a node from its DAO parent set, it MAY
        generate a new DAO message with an updated Transit Information
        option.


I am not so sure about this, but I would assume that this new DAO 
message would include an incremented Path Sequence in order to mark 
other DAOs, which might be also still on the way to the root, as 
outdated. So I guess the root would make the decision to overwrite or 
not based on the comparison of the path sequence.

Best,
Cenk

[1] https://tools.ietf.org/html/rfc6550#section-6.4.3
[2] https://tools.ietf.org/html/rfc6550#section-9.7

On 25.09.2015 16:53, Turner, Randy wrote:
>
> Hi Guys,
>
> I was hoping someone could answer a quick question regarding 
> non-storing mode and DAOs – If I establish a route to a node using DAO 
> with transit info at time 0 with a lifetime of 100 lifetime units, and 
> then 20 lifetime units later, I send another DAO for the same target 
> address specifying a different path, will this latest DAO cause the 
> root or LBR to overwrite its’ routing information for the 
> destination?  I was trying to figure out if I need to explicitly send 
> a DAO with a lifetime of 0 (or something else) to kill the previous 
> route before sending a new DAO for the same destination?
>
> Thanks for any replies…
>
> Randy
>
>
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