Re: [Roll] Question on MPL: parameter update on runnning MPL forwarders

[Don Sturek <[e-mail]>]

Hi Yusuke,

<I haven't tried this with our running code however...... >

I don't believe it is possible to change imin, imax, k or any other
operational MPL forwarder parameter without some sort of
pre-distribution/synchronization of the new parameters.  It would work as
you note if there are no transmission or valid seed set but if multicast
traffic is already present using an existing seed, I would expect you
would see issues in distribution of messages if you change the parameters
while in operation.   Additionally, if you use MPL to distribute the
change with existing multicast traffic you will find some nodes do not get
the new parameters (which will create other problems when you want the new
parameters to take effect)

Don



On 10/4/13 1:07 AM, "Yusuke DOI" <[e-mail]> wrote:

>Hi,
>
>I have a simple question: is it possible to update MPL parameters of
>running forwarder instances?
>
>To maintain the system in 'good state', I expect some sort of parameter
>tuning on MPL. Especially for the systems dynamically grows, static
>configuration of MPL parameters will be difficult. For example, DHCPv6
>reconfigure request can be used to update MPL forwarder parameter.
>However, I'm not sure it's 'safe' to update parameters (K, Imin, Imax) of
>running MPL forwarder instances.
>
>I think it's safe if there are no transmission / no valid seed set. Is it
>possible to update a running MPL forwarder parameter without breaking
>current state? 
>
>Regards,
>
>Yusuke
>
>
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