[Xorp-hackers] ospf4 and ospf6 can not apply export policy at the same time

[Li Zhao]

Now can anybody tell me why tags are compared when policy terms are 
processed? Because ospf4 tag is greater than ospf6 policy tag. That is why
ospf4 tag is left out?

Li

--- On Wed, 12/16/09, Li Zhao <lizhaous2000 at yahoo.com> wrote:

> From: Li Zhao <lizhaous2000 at yahoo.com>
> Subject: Re: [Xorp-hackers] ospf4 and ospf6 can not apply export policy at the same time
> To: "Bruce Simpson" <bms at incunabulum.net>
> Cc: xorp-hackers at xorp.org
> Date: Wednesday, December 16, 2009, 3:28 PM
> Who flattened the policy statements
> into these instrunction terms?
> 
> --- On Wed, 12/16/09, Li Zhao <lizhaous2000 at yahoo.com>
> wrote:
> 
> > From: Li Zhao <lizhaous2000 at yahoo.com>
> > Subject: Re: [Xorp-hackers] ospf4 and ospf6 can not
> apply export policy at the same time
> > To: "Bruce Simpson" <bms at incunabulum.net>
> > Cc: xorp-hackers at xorp.org
> > Date: Wednesday, December 16, 2009, 1:46 PM
> > a correction: the second policy
> > exited from runTerm in function
> IvExec::Visit(OnFalseExit
> > &).
> > 
> > --- On Wed, 12/16/09, Li Zhao <lizhaous2000 at yahoo.com>
> > wrote:
> > 
> > > From: Li Zhao <lizhaous2000 at yahoo.com>
> > > Subject: Re: [Xorp-hackers] ospf4 and ospf6 can
> not
> > apply export policy at the same time
> > > To: "Bruce Simpson" <bms at incunabulum.net>
> > > Cc: xorp-hackers at xorp.org
> > > Date: Wednesday, December 16, 2009, 1:24 PM
> > > I understand how these tags are used
> > > now. The problem for redistributing static
> routes
> > into
> > > both ospf4 and ospf6 was when static_routes
> prepared
> > routes
> > > before pushing the routes into the rib.
> > > in IvExec::run, there will be two policies. The
> first
> > one
> > > is always ospf6 policy and second is ospf4
> policy.
> > > when terms are processed, there are 8
> instructions for
> > each
> > > policy to be run.
> > > Somehow the second (ospf4) policy exited from
> running
> > terms
> > > in function 
> > > IvExec::Visit(NaryInstr &) because
> t->val() ==
> > > false.
> > > So the routes had one tag, which is ospf4 tag,
> left
> > out!
> > > I am wondering why the two similar policies have
> > different
> > > t->val().
> > > 
> > > Li
> > > 
> > > --- On Fri, 12/11/09, Li Zhao <lizhaous2000 at yahoo.com>
> > > wrote:
> > > 
> > > > From: Li Zhao <lizhaous2000 at yahoo.com>
> > > > Subject: Re: [Xorp-hackers] ospf4 and ospf6
> can
> > not
> > > apply export policy at the same time
> > > > To: "Bruce Simpson" <bms at incunabulum.net>
> > > > Cc: xorp-hackers at xorp.org
> > > > Date: Friday, December 11, 2009, 1:32 PM
> > > > Bruce, what does a PolicyTag mean?
> > > > e.g. RIB was asked to add <ospfv2,
> tag=7>
> > and
> > > > <ospfv3, tag=8> into
> _policy_redist_map.
> > How
> > > the
> > > > source protocol
> > > > (e.g. static_routes)
> > > > uses that tag to mark routes I do not quite
> > > understand.
> > > > 
> > > > Thanks.
> > > > 
> > > > Li
> > > > 
> > > > --- On Mon, 11/30/09, Bruce Simpson <bms at incunabulum.net>
> > > > wrote:
> > > > 
> > > > > From: Bruce Simpson <bms at incunabulum.net>
> > > > > Subject: Re: [Xorp-hackers] ospf4 and
> ospf6
> > can
> > > not
> > > > apply export policy at the same time
> > > > > To: "Li Zhao" <lizhaous2000 at yahoo.com>
> > > > > Cc: xorp-hackers at xorp.org
> > > > > Date: Monday, November 30, 2009, 6:05
> PM
> > > > > Li Zhao wrote:
> > > > > > I noticed that if both ospf4 and
> ospf6
> > > > redistribute
> > > > > static routes, ospf4 will fail to
> > redistribute
> > > static
> > > > > routes. This is a bug.
> > > > > >   
> > > > > 
> > > > > Can you please raise this on XORP's
> Trac on
> > > > SourceForge,
> > > > > preferably with an appropriate test
> case,
> > so
> > > someone
> > > > can get
> > > > > around to looking at it when there's
> free
> > time to
> > > do
> > > > so?
> > > > > 
> > > > > thanks,
> > > > > BMS
> > > > > 
> > > > 
> > > > 
> > > >       
> > > > 
> > > >
> _______________________________________________
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> > > > Xorp-hackers at icir.org
> > > > http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/xorp-hackers
> > > > 
> > > 
> > > 
> > >       
> > > 
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> > > 
> > 
> > 
> >       
> > 
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> 
> 
>       
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