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Prior to Passport 8000 Series software release 3.2, you configured separate policy databases for RIP accept, RIP announce, OSPF accept, and OSPF announce filtering purposes. Now, you can form a unified database of route policies that can be used by the protocols (RIP or OSPF or BGP) for any type of filtering task.
A policy is identified by a name or an ID. Under a given policy you can have several sequence numbers, each of which is equal to one policy in the old convention. If a field in a policy is not configured, it will appear as 0 or any when it is displayed in Device Manager, as this implies that the field is to be ignored in the match criteria. The clear option can be used to remove existing configurations for any field.
Each policy sequence number contains a set of fields. Only a subset of those fields are used when the policy is applied in a certain context. For example, if a policy has a set-preference field set, it will be used only when the policy is applied for accept purposes. This field will be ignored when the policy is applied for announce/redistribute purpose.
You can apply one policy for one purpose, for example, RIP Announce, on a given RIP interface. In that case, all sequence numbers under the given policy will be applicable for that filter. A sequence number also acts as an implicit preference, a lower sequence number is preferred.
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