When using the Filter-Policy tool in the OSPF view, which of the following tools can be called using the if-match clause? (Multiple choice)

Question

Options

• AAnother Filter-Policy
• BAcl
• CRoute-Policy
• DPrefix list

• A
  16% (9)
• B
  84% (49)

Explanation

In OSPF's Filter-Policy configuration on Huawei devices, the if-match clause supports three matching tools: ACL (B) for matching routes by access control list rules, Route-Policy (C) for complex conditional matching and attribute manipulation, and Prefix-list (D) for precise prefix-based route filtering using network address and mask-length ranges. These three cover the full spectrum of route-matching granularity available in this context.

Option A (Another Filter-Policy) is incorrect because a Filter-Policy cannot recursively reference another Filter-Policy - the syntax does not support self-nesting or chaining of filter-policy tools, which would also risk circular dependencies.

Memory tip: Think "A, P, R" = ACL, Prefix-list, Route-Policy - the three native route-matching instruments in Huawei's routing toolkit. Any time you see if-match inside a routing filter context, these three are your go-to options. A Filter-Policy is a caller, never a callee - it uses other tools but cannot be used by itself.

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