Tom,

Can you please elaborate how the outbound filter with the community tag of
no-export would help... as I'm still not too clear what it will achieve.

And sorry for the stupid question...

Thanks again.

Best Regards,
Hunt Lee



""Tom Martin""  wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...

> I read the question as if Router B should only be used for packets
> _originating_ from AS 202, which should use the T1 connection.  In this
> case an outbound filter would be appropriate, along with a community tag
> of no-export.




> On Mon, 04 Feb 2002 23:43:41 -0500, Hunt Lee wrote:
>
> > I have a Route-Map question that I'm very confused about:
> >
> > The scenario is from Caslow (p840), it is as follows:
> >
> > Company A has a full T3 connection to the Internet thru the ISP
> > AAA-101.NET. Company B  has a T1 connection to the Internet thru the ISP
> > BBB-202.Net. Company A acquires Company B, but Company A wants to keep
> > both Internet connections, with the exception of packets originating
> > from the AS of BBB-202.Net (BBB-202.Net's AS is 202).  All traffic
> > originating from AS 202 will use the T1 Internet connection.
> >
> > Caslow states in order to do this, the following configs should be used
> > on RouterB
> >
> > router bgp 1000
> >     neighbor 10.1.1.1 remote-as 1000
> >     neighbor 172.16.1.100 remote-as 202
> >     neighbor 172.16.1.100 route-map AS-200-IN in
> >
> > no ip classless
> > ip as-path access-list 1 permit _300$
> >
> > route-map AS-200-IN permit 10
> >     match as-path 1
> >     set local-preference 200
> >
> > route-map AS-200-IN permit 20
> >
> > What I don't understand is:
> >
> > With the "set local-preference 200" statement, it directs the traffic
> > (routes coming from AS 202 / neighbor 172.16.1.100) to go out via Router
> > B. However, what makes the router not passing any other routes (not from
> > AS 200)? Wouldn't they still be able to go out thru Router B as well? In
> > consideration that the local preference has not been changed on the
> > router.
> >
> > Any help will be greatly appreciated.
> >
> > Best Regards,
> > Hunt Lee
> > System Engineer
> > WebCentral
> > misconduct and Nondisclosure violations to [EMAIL PROTECTED]




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