300-510 · Question #173
What is the purpose of ACL type prefix set entries in RPL prefix sets?
The correct answer is B. They hold IPv4 or IPv6 prefix match specifications.. In Cisco IOS XR's Routing Policy Language (RPL), a prefix-set is a named container used within route policies to match IP routes by their network prefix. ACL-type prefix set entries hold IPv4 or IPv6 prefix match specifications, which define specific network prefixes along with o
Question
What is the purpose of ACL type prefix set entries in RPL prefix sets?
Options
- AThey hold IPv4 or IPv6 prefixes that do not match specifications.
- BThey hold IPv4 or IPv6 prefix match specifications.
- CThey hold IPv6 prefix match specifications.
- DThey hold IPv4 prefixes that do not match specifications.
How the community answered
(23 responses)- A4% (1)
- B87% (20)
- D9% (2)
Explanation
In Cisco IOS XR's Routing Policy Language (RPL), a prefix-set is a named container used within route policies to match IP routes by their network prefix. ACL-type prefix set entries hold IPv4 or IPv6 prefix match specifications, which define specific network prefixes along with optional length qualifiers (e.g., 'ge', 'le', 'eq') that control exact or range-based matching. These prefix sets are referenced in route-policy statements to permit, deny, or apply attributes to routes whose prefixes match the specifications. The entries are not restricted to only IPv4 or only IPv6; a single prefix-set can contain both address family types.
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