On Thu, 2008-06-12 at 14:33 +0300, Sasha Khapyorsky wrote:
> On 03:59 Thu 12 Jun , Hal Rosenstock wrote:
> >
> > Would you elaborate on the motivation behind the requirement to
> > maintain/preserve the base LID routing ?
>
> I see couple advantages:
>
> 1. Application which works on base LIDs only will not be affected by LMC
Yes; that's the obvious one.
> 2. Changing LMC on a fabric will not change routing paths (when LIDs are
> not reassigned)
That's when LMC is reduced rather than increased.
> 3. Finally it does better balancing for secondary LIDs ("port
> offsetting")
Isn't that accomodated in the patch but separate from the base LID
preservation ?
Preserving/maintaining base LIDs is a policy decision and perhaps this
should be an option with this as the default. For some balancing all
paths might be more important that not disrupting base LID traffic.
-- Hal
> Sasha
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