[Kittyhawk] KH is not fault-tolerant/fault oblivious

Eric Van Hensbergen ericvh at gmail.com
Thu Sep 8 18:08:49 EDT 2011


On Thu, Sep 8, 2011 at 4:53 PM, Jonathan Appavoo <jappavoo at bu.edu> wrote:
> BTW with respect to the ARP we did already have that discussion about only
>          the single node being pinged and hence not populating all the arp
> caches.
>
>          What I was saying was that that a "Gratuitous ARP" should occur
> when the
>          nodes bring up there interfaces under Linux and that this should
> induce population of the
>          arp caches (I could not remember the term Gratuitous ARP at the
> time.
>          I saw this occur when I was porting lwip to uboot on KH my
> assumption was that
>         Linux would likely do the same.

It is possible that its happening and the ARP entries just expire
before I get around to looking at them.  I'm not sure what Linux uses
as the timeout for the cache, but it seems pretty quick, so its
possible.

       -eric



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