[address-policy-wg] 2006-05 New Policy Proposal (PI Assignment Size)

Gennady Abramov wrote:
> On Wed, Sep 20, 2006 at 06:03:09PM +0000, Max Tulyev wrote:
>> Gennady Abramov wrote:
>>> And, don't forget that you even can do multihoming without PI address
>>> space, by multihoming of PA assigment (if LIR permitted it).
>> Multihoming, but not backups. Because of some traffic will flow through
>> [aggregated] LIR route if even link with LIR will be damaged.
> It is very some traffic.
> Some traffic flows on default gateway, even if you have BGP full view on
> the router... :)
> Normally, longest prefix has highest priority. If your 
> multihomed prefix doesn't exist in some part of Internet, you may have
> troubles with connectivity with this part of Internet, don't looking PA
> or PI addresses you uses.
> In the case of PA specific, traffic from this part of Internet will flow
> to aggregated route, and, if specific route would be found on next hops,
> will go to specific route from this next hops.
> In the case of PI, traffic will flow to default or will be dropped.
> Anyway, if your prefix doesn't routed anywhere, it isn't normal
> situation, don't depend of addresses u use.

Good only in the theory ;)

IRL some "wise" admins filters out more specific if there is less
specific (? - as I can understand this). This means some part of
Internet will be not accessible if there is no link between you and your
LIR.

-- 
WBR,
Max Tulyev (MT6561-RIPE, 2:463/253 at FIDO)