[ppml] Policy to help the little guys
jmaimon at chl.com
Thu Mar 20 12:35:39 EDT 2008
David Williamson wrote:
>>>Can you explain to me how a PI /24 would be in any way different from
>>>an otherwise identical PA /24?
>>In theory, filtering on RIR boundaries should be much safer if
>>multihoming with smaller prefixes was done with PA space.
>So, you simply repeated the assertion I was questioning, but with the
>words "in theory" in front of it. Please explain this theory, as I'm
>not familiar with it.
The difference would be in the likelyhood that the PA /24 is reachable
through the PA aggregate prefix even if it filtered. Hence, safer to filter.
This can probably be analyzed and I think actually was fairly recently.
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