Hi Jim,


> As previously discussed, TTE assumes that there is adequate capacity 
> engineered into backup paths. Such capacity should already be present to 
> account for link failures.
> 
> [Jim U>]The capacity of the backup topology may include one or more equal or 
> unequal cost paths to accommodate the additional load that is shunted. Are 
> you suggesting that this is a pre-defined set such that the backup set still 
> meets some percentage of SLA/SLOs? This is a valid tradeoff; I have had 
> similar discussions in re BGP Persistence and whether or not it should be 
> applied for different FOUs.


That would seem to be highly advisable if you want to support SLA/SLOs despite 
link failures or congestion.

Regards,
Tony

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