LoA (Letter of Authorization) for Prefix Filter Modification?

Tue Sep 16 13:56:16 UTC 2008

On Tue, 16 Sep 2008, Rodriguez, Mauricio wrote:

> Recently, one of our Transit providers has started requiring a Letter of 
> Authorization for addition of any of our own Transit customers' prefixes 
> to their filters.  The verbiage of the LoA basically states that the 
> owner of the assignment or allocation (not necessarily our customer) 
> allows us to advertise their prefixes through our service.
>
> Is this a common practice?  Our past experience indicates that a simple 
> request to a NOC or update of a routing registry usually is sufficient.

It's not unheard of.  Most providers don't require it, but I have run into 
a few who do.  It's a minor PITA compared to the web interfaces some 
providers make you use to request filter updates.

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  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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