[..]
 

 

If the  policy guaranties this, its OK.

However, what is your guess: how many IPv4 routing entries will be the in the DFZ table in November 2011 and how many in November 2012? In November 2013? Roughly, in two years?

What will slow down the growth? What might increase?

How many IPv6 entries can be added if the total capacity of the line card is 0.5M IPv4 routing entry?

Lets see: http://labs.ripe.net/Members/gih/BGPRoutingTable2011.png

If there are no more IPv4 addresses to be allocated by the RIRs, the routing tably still will increase due to exchangeng (selling) slots of addresses.

OK. if we would be able to stop the increase of the IPv4 address entries at 440 000 then we would have rooms for 30 000 IPv6 routing entries.

30 000 IPv6 entries are not too many, there are more AS in use today.

Therefore it would be better to stop the increase at lower level - otherwise huge investment will be needed world wide soon.

In the other hand if the small IP address slots would be very limited both at IPv4 and IPv6 level then the IPv4->IPv6 transition could be executed with the line cards capable to handle 0.5M IPv4 routes.

Either we restrict ourself within a narrow lane or hugh investments AND toleration of SLOW DOWN is unavoidable.

Best,

Géza