RE: Cogent move without renumbering

>> Is it reasonable to think that numerous /24's from L3's IP
>> space could be
>> reassigned elsewhere without causing significant trouble for
>> L3 and others? Even
>> if it could work, what would be the justification for taking
>> L3's property?
>
> Depending upon the circumstance, yes:
>
> http://www.cctec.com/maillists/nanog/current/msg01880.html

I think that is not entirely correct comparison. Original
poster did not
not say that the current L3 customers would entirely leave
L3, but that
he asked if they could do something to get other type of
connectivity if
they have L3 ip space.

The answer is that if they have /24 or longer and have router
then they
can turn on BGP and announce that /24 both to L3 and to
another ISP and
in this way have full connectivity. This would not be an
attempt to take
ip ip space away from L3. But this is not something they
could do within
couple days if they do not run BGP and do not have ASN (takes
at least a
week to get it from ARIN).

For a minute there, I thought you might be right since I'm browsing
for clue factor and may have missed something, but, it appears you
are inaccurate in this as the poster did say:

--QUOTE

"If a single-homed network moves from L3 to Cogent, how would they benefit? Would
they not still be cut off from a significant percentage of the Internet?

Is it reasonable to think that numerous /24's from L3's IP space could be
reassigned elsewhere without causing significant trouble for L3 and others? Even
if it could work, what would be the justification for taking L3's property?"

--END QUOTE

That quote is asking if someone can take Level(3)'s PA space assigned with them
to another providers network. The answer is yes, it's possible.

IANAL