Hi,

On 2007/07/31, at 0:20, H E wrote:
> I am testing MIPL on systems with multiple interfaces and checking  
> for failure detection and recovery in MIPL.  Is there documentation  
> or more information on the operation of MIPL in multihomed  
> environment.

MIPL2 has some interface preference mechanism implemented. You can  
get more information in the mip6d.conf manpage (see the  
MnIfPreference item).

> If an interface fails on the MN, how does the other interface  
> provide a means for recovery by redirect traffic through it? from  
> the debug screen of mip6d it seems to me that HoA of the working  
> interface is used as a CoA for the failed address?
>

The MnIfPreference allows to use several interfaces sequentially: the  
interface with the lowest preference will be preferred. If this  
interface becomes down, another one with a higher preference will be  
used. The tunnel is moved from the failed interface to another, thus  
redirecting the traffic through this new interface. The CoA of this  
new interface is used as a new CoA (to replace the one that was on  
the failed interface), thus a new binding update is sent to the HA to  
update the binding. Note that the HoA is never used as a CoA.

If you want to use multiple interfaces at the same time, you may be  
interested in the Multiple CoA implementation available here: http:// 
software.nautilus6.org/MCoA/

Regards,
-- 
Romain KUNTZ
[EMAIL PROTECTED]
Louis Pasteur University - Networks and Protocols Team



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