我們Fast2test培訓資料可以測試你在準備考試時的知識，也可以評估在約定的時間內你的表現。為你獲得的成績以及突出的薄弱環節給出指示，從而改善了薄弱環節，Fast2test Cisco的300-515考試培訓資料向你介紹不同的核心邏輯的主題，這樣你不僅學習還瞭解各種技術和科目，我們保證，我們的培訓資料是通過實踐檢驗了的，我們Fast2test為你的考試做足了充分的準備，我們的問題是全面的，但價格是合理的。
| Section | Weight | Objectives |
|---|---|---|
| Layer 2 VPNs | 25% | - MPLS-based L2VPN services - EVPN control plane and data plane - VPWS and VPLS - Ethernet VPN (EVPN) - L2TPv3 - L2VPN configuration and verification |
| IPv6 VPNs | 15% | - Dual-stack VPN operation - IPv6 VPN migration and troubleshooting - MP-BGP for VPNv6 routes - IPv6 PE-CE routing - 6VPE and 6PE |
| VPN Architecture | 25% | - MPLS and VPN fundamentals - VPN deployment models - VPN service requirements and design considerations - Inter-AS and Intra-AS VPN |
| Layer 3 VPNs | 35% | - Route target and route distinguishers - Inter-AS L3VPN options - L3VPN troubleshooting - MPLS L3VPN architecture - MP-BGP for VPNv4 routes - PE-CE routing protocols - VRF and VRF-lite |
在這裏我要說明的是這Fast2test一個有核心價值的問題，所有Cisco的300-515考試都是非常重要的，但在個資訊化快速發展的時代，Fast2test只是其中一個，為什麼大多數人選擇Fast2test，是因為Fast2test所提供的考題資料一定能幫助你通過測試，，為什麼呢，因為它提供的資料都是最新的培訓工具不斷更新，不斷變換的認證考試目標，為你提供最新的考試認證研究資料，有了Fast2test Cisco的300-515，你看到考試將會信心百倍，不用擔心任何考不過的風險，讓你毫不費力的獲得認證。
問題 #43
Refer to the exhibit. OSPF is used as an underlayer routing protocol in the backbone network of this ISP. A network engineer recently configured R1 with ip cef and mpls label range 1000 2000.
Several days later, the engineer replaced a failed RP module on R1. After the replacement, one of the customer's MPLS LSPs went down with the error message LSP-ERROR-Indication:No Label Resources. Which action must the engineer take to resolve the issue?
答案：A
解題說明：
Because the pseudowire is bound to a non-IP interface (Gi0/0/0 has "no ip address"), LDP must be run as a targeted session over the loopback addresses. Replacing the RP module cleared that neighbor relationship, so you must re-establish it with the mpls ldp neighbor 10.0.0.2 targeted command.
問題 #44
What do EVPN single-active and all-active have in common?
答案：A
解題說明：
In Ethernet VPN (EVPN), both single-active and all-active are specific operational modes defined for Ethernet Segment Multihoming. This occurs when a Customer Edge (CE) device is physically connected to two or more Provider Edge (PE) routers for redundancy and high availability.
Single-Active Multihoming: The CE is connected to multiple PEs, but traffic for a specific Ethernet Segment (ES) is active on only one PE at a time. If the active PE link fails, traffic switches to the backup PE.
All-Active Multihoming: The CE is connected to multiple PEs, and all concurrent links are active and capable of forwarding traffic simultaneously (allowing per-flow load balancing using LACP/LAG).
問題 #45
An engineer is troubleshooting AToM on an IOS XE router and receives an error when creating the xconnect.
Which command does he need to complete to create the xconnect in AToM?
答案：A
解題說明：
Section: Layer 2 VPNs
問題 #46
Refer to the exhibit. The networking team of the service provider configured an L3VPN within the service provider core to provide connectivity between a customer's two offices. BGP is configured as the PE-CE routing protocol. The customer is using AS 65515, and the service provider is using AS 65516. After the L3VPN was established and BGP neighbor relationships were established at each customer site, the team determined that CE1 and CE2 cannot communicate. Which action must the team take to resolve the issue?
答案：A
解題說明：
Because each CE's prefix arrives via the SP with its own AS (65515) already in the AS-PATH, the BGP loop-prevention check on the CE will reject it. Enabling neighbor X allowas-in on the CE's BGP session with the PE lets it accept routes even if its AS appears in the AS-PATH.
問題 #47
SIMULATION 3
Guidelines
This is a lab item in which tasks will be performed on virtual devices.
* Refer to the Tasks tab to view the tasks for this lab item.
* Refer to the Topology tab to access the device console(s) and perform the tasks.
* Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
* All necessary pre-configurations have been applied.
* Do not remove any existing configurations from the devices, only those necessary to make the appropriate changes required to fulfill the listed tasks.
* Do not change the enable password or hostname for any device.
* Save your configurations to NVRAM before moving to the next item.
* Click Next at the bottom of the screen to submit this lab and move to the next question.
* When Next is clicked, the lab closes and cannot be reopened.
Topology
Tasks
R1 through R6 are routers that provide IGP underlay for the MPLS provider.
Candidate are required to perform below configuration and verification tasks as noted.
1. Troubleshoot R3 to establish OSPF adjacency with R4.
2. Troubleshoot R5 to form MPLS session on port 646 and ensure R1 to R6 LSP is built.
Initial configuration with IP addressing has been completed. The candidate must not make any changes to the configurations except to fulfill the tasks listed above. Do not change the preconfigured network-type. Only R3 and R5 may to be modified for the solutions. Also ensure the solution show in the config.
答案：
解題說明：
On R3, add ip ospf mtu-ignore under the interface connected to R4 (e0/0 toward 10.3.4.0/30).
On R5, change the label protocol to LDP (port 646) and enable it on the core interfaces, for example:
mpls label protocol ldp
mpls ip on the R5 core interfaces toward R4 and R6.
The OSPF neighborship between the two routers is prevented by an MTU mismatch on the R3- R4 link. Adding the command to ignore MTU for OSPF on the R3-facing interface allows OSPF to build a full adjacency without altering the preconfigured network type on either side of the link.
In the MPLS underlay, the other provider routers are running LDP, which uses TCP/UDP port
646, while R5 is using a different label protocol. Changing the label protocol on R5 to LDP and ensuring MPLS is enabled on its core-facing interfaces lets R5 establish LDP sessions with its neighbors. Once these LDP adjacencies are up, labels are exchanged end to end and a continuous LSP is built between R1 and R6.
問題 #48
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300-515通過考試: https://tw.fast2test.com/300-515-premium-file.html