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Cisco 300-515 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Layer 3 VPNs35%- Implement extranet/shared services (route targets/policy)
- Describe routing requirements (MP-BGP, PE-CE routing)
- Describe CSC concepts
- Implement multicast VPN (Intranet, Extranet, mLDP)
- Troubleshoot Intra-AS L3VPNs (PE-CE, PE-PE, PE-RR)
- Describe Inter-AS L3VPNs (Options A, B, AB, C)
Topic 2: VPN Architecture25%- Describe L3VPN control plane (MP-BGP, RD, RT, VPN labels, VRF, PE-CE)
- Troubleshoot underlay (Core IGP, LSP)
- Describe Layer 2 service architecture (IOS XR Ethernet Flowpoints, IOS XE EVCs)
- Compare VPN architecture (Layer 2 vs Layer 3, Inter-AS/Intra-AS)
- Describe L3VPN data plane (underlay label, VRF forwarding, VPNv6)
Topic 3: IPv6 VPNs10%- Troubleshoot IPv6 VPN provider edge (PE-PE, PE-CE)
- Describe IPv6 VPN routing requirements (MP-BGP, PE-CE)
Topic 4: Layer 2 VPNs30%- Describe EVPN concepts (data plane/control plane, multihoming, suppression, forwarding)
- Implement Ethernet OAM
- Implement EVPN (IRB, VPWS, native)
- Troubleshoot L2VPN services (E-LAN, E-Line, E-Tree)

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最新的 CCNP Service Provider 300-515 免費考試真題 (Q25-Q30):

問題 #25
How is an IPv6 route learned by other PEs if OSPFv3 is used as the PE-CE routing protocol?

答案：C

解題說明：
When OSPFv3 runs between CE and PE, the PE learns the customer's IPv6 routes via OSPFv3 and then injects them into MP-BGP under the VPNv6 (ipv6 vpn) address-family. This advertises the IPv6 prefixes (with RDs/RTs) to remote PEs over the MPLS core.


問題 #26
While troubleshooting an AToM L2VPN service, a network consultant notices that the AC Layer 2 encapsulations are different. Which action should the consultant take in order to make the MPLS L2VPN work?

答案：D

解題說明：
In AToM, when the two attachment circuits use different Layer 2 encapsulations (e.g., Ethernet on one side, Frame Relay or PPP on the other), you can't transport the native L2 frames end-to-end
- the headers don't match. The solution is L2VPN IP interworking: the PEs strip the local Layer 2 header at ingress and carry only the Layer 3 (IP) payload across the pseudowire, then re- encapsulate into the appropriate L2 header at the far end. Because this translation has to happen on both ends of the pseudowire, interworking ip must be configured in the pseudowire class on both PE routers terminating the ACs. Configuring it on only one side leaves the pseudowire mismatched and the session won't come up correctly.


問題 #27
Refer to the exhibit.

Which statement describes the result of this configuration?

答案：A


問題 #28
Refer to the exhibit. To begin implementing EVPN Native with the software MAC learning feature, an engineer has applied this configuration to router PE1. Source MAC addresses learned on PE1 must be stored as dynamic MAC entries and updated on PE2 as static remote MAC addresses.
Which additional configuration must the engineer apply to PE1 to complete the EVPN Native implementation?

答案：D

解題說明：
To enable EVPN Native (aka EVI) with software MAC learning, you must configure an EVI instance under the evpn hierarchy and turn on MAC advertisement for dynamic entries. The advertise-mac command causes locally learned MACs to be sent in Type-2 EVPN routes, and the unknown-unicast-suppress and control-word-disable commands tune frame handling to match the native VPWS requirements. Finally, you bind that EVI into MP-BGP with the proper RT import/export and peer under the address-family l2vpn evpn stanza.


問題 #29
The CTO of a company requires the support of a network consultant to deliver an MPLS solution without resigning to a certain degree of redundancy and scalability. Which solution effectively scales to hundreds or thousands of sites?

答案：D

解題說明：
Section: VPN Architecture


問題 #30
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