[Xorp-users] Fwd: from and to blocks of policy terms

Andreas Voellmy andreas.voellmy at gmail.com
Mon Mar 10 12:34:52 PDT 2008


On Tue, Feb 12, 2008 at 1:35 AM, Pavlin Radoslavov
<pavlin at icsi.berkeley.edu> wrote:
>  > > For example, "from {} to {neighbor: 192.168.1.2} then {accept}"
>  > > can't be used as an export policy, but can be used as an import
>  > > policy. As an import policy, when the routes reach the outbound
>  > > evaluation, only the routes to neighbor 192.168.1.2 will be
>  > > accepted (i.e., transmitted).
>  >
>  >
>  > If I understand you correctly, you are saying that if "from {} to {neighbor:
>  > 192.168.1.2} then {accept}" were an IMPORT policy, then it would be
>  > equivalent to the following EXPORT policy "from {protocol: bgp} to
>  > {neighbor: 192.168.1.2} then {accept}"?
>
>  I believe the answer is yes.
>  However, I should also say that it has been a while since I looked
>  into the policy framework details so I could be wrong.

I tried the policy "from {} to {neighbor: X} then {accept}" as an
import policy and it turns out that it is illegal, that is Xorp (1.4)
rejects it and quits.

--Andreas



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