[Xorp-hackers] XORP BGP 4-byte AS number support

[Kristian Larsson]

On Mon, Dec 10, 2007 at 11:48:43PM +0000, Mark Handley wrote:
> I just committed a jumbo patch to CVS adding 4-byte AS number support
> to BGP.  It's such a large patch because previously we stored path
> attributes  in the form we received them, and didn't need to recode
> them on a per-peer basis because all peers used the same coding.
> 4-byte AS numbers break this, so now we encode only on output, as
> needed.  Changing the way we store and process path attributes impacts
> a lot of code, but it's the right thing to do.  RIPE will start
> allocating 4-byte AS numbers by default in a year, so we want to be
> ready!
> 
> Anyway, just a heads up that although from the testing I've done I
> don't think this broke anything, it's possible BGP will have some
> issues until we've had a chance to see what happens on all the
> tinderbox platforms and the live test hosts.  If you want to test
> this, the version of the user manual in CVS gives the details - let me
> know if the manual is unclear on anything.


Why is this an option? Is there a reason not to
have it turned on by default (ie always have
support) ?

  -K

-- 
Kristian Larsson                                        KLL-RIPE
Network Engineer & Peering Coordinator      SpriteLink [AS39525]
+46 704 910401			              kll at spritelink.net