On Mar 13, 2012, at 2:27 AM, Randy Bush wrote:
>>> o a prefix against which validation has not been run (no validation
>>> at all or some knob turned off) should not be marked Valid. that
>>> would be a lie. it should be marked NotFound.
>> FWIW - the JUNOS implementation has got this 4th state, called
>> "Unverified".
Unverified is the default state for all prefixes … so if you do "fall off the
end"
then the system will set it to its default values.
> the only problem i see with this is that, if i do not test for it in
> policy, i will fall off the end.
>
> policy-statement route-validation {
> term valid {
> from {
> protocol bgp;
> validation-state valid;
> }
> then {
> local-preference 110;
> validation-state valid;
> accept;
> }
> }
> term invalid {
> from {
> protocol bgp;
> validation-state invalid;
> }
> then {
> local-preference 90;
> validation-state invalid;
> deny;
> }
> }
> term unknown {
> from {
> protocol bgp;
> validation-state unknown;
> }
> then {
> validation-state unknown;
> accept;
> }
> }
> }
>
> randy
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