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Question 46/63
You are connecting your OSPF router to your customer's RIP router and redistributing the customer's routes into your OSPF domain. Your OSPF routes is part of an NSSA and the ABR is injecting an OSPF default route, which you have advertised to your customer. After committing the configuration, you notice a routing loop between your OSPF router and the customer's RIP router.
Which action must you perform on your OSPF router to solve this problem?
Which action must you perform on your OSPF router to solve this problem?
Correct Answer: D
Explanation/Reference:
Avoid routing loops by changing the OSPF external route preference.
Incorrect Answers:
A: If multiple NSSA ABR routers are present, it is recommended that not all ABRs perform Type 7-to-5 translation to avoid routing loops.
B: We would have to make the interface on the RIP router, the customer router, passive, not the customer- facing interface on the OSPF router.
Note: By default RIP broadcasts are sent from all interfaces. RIP allows us to control this behavior. We can configure which interface should send RIP broadcast or which not. Once we mark any interface as passive interface, RIP will stop sending updates from that interface.
References: https://www.juniper.net/documentation/en_US/junos15.1/topics/topic-map/ospf-stub-and-not- so-stubby-areas.html
Avoid routing loops by changing the OSPF external route preference.
Incorrect Answers:
A: If multiple NSSA ABR routers are present, it is recommended that not all ABRs perform Type 7-to-5 translation to avoid routing loops.
B: We would have to make the interface on the RIP router, the customer router, passive, not the customer- facing interface on the OSPF router.
Note: By default RIP broadcasts are sent from all interfaces. RIP allows us to control this behavior. We can configure which interface should send RIP broadcast or which not. Once we mark any interface as passive interface, RIP will stop sending updates from that interface.
References: https://www.juniper.net/documentation/en_US/junos15.1/topics/topic-map/ospf-stub-and-not- so-stubby-areas.html
- Question List (63q)
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- Question 7: Click the Exhibit button. user@router# run show route 2.0.0....
- Question 8: Your customer requires a Layer 2 VPN service (draft-kompella...
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- Question 10: Click the Exhibit. (Exhibit) The exhibit shows the partial c...
- Question 11: A layer 2 circuit (RFC 4447) is established between two PE r...
- Question 12: Click the Exhibit button. (Exhibit) Referring to the exhibit...
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- Question 14: Which two statements are associated with any-source multicas...
- Question 15: Click the Exhibit button. [edit] user@PE-1# show protocols r...
- Question 16: What are two characteristics of L3VPNs? (Choose two.)...
- Question 17: Click the Exhibit button. (Exhibit) Referring to the exhibit...
- Question 18: In a carrier-of-carrier VPN model, which type of network lay...
- Question 19: Which two statements are true regarding the CSPF algorithm? ...
- Question 20: Packets traverse a Junos device configured for class of serv...
- Question 21: Your company has multiple upstream BGP connections to the In...
- Question 22: You have a strict-high queue configured. You notice that und...
- Question 23: Click the Exhibit button. R1 is exporting 2000:FEFE:100::/64...
- Question 24: What is the final component of CoS processing on a Junos dev...
- Question 25: Click the Exhibit button. [edit] user@PE-1# run show l2 circ...
- Question 26: PE1 and PE2 provide a BGP-signaled VPLS service named VPN Bl...
- Question 27: Click the Exhibit button. (Exhibit) Both autonomous systems ...
- Question 28: Click the Exhibit button. (Exhibit) You implemented the conf...
- Question 29: You are working with a new MPLS network that is using the de...
- Question 30: Click the Exhibit button. (Exhibit) Which configuration supp...
- Question 31: During a network migration window, an engineer issues the se...
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- Question 33: Click the Exhibit button. [edit] [edit] lab@r1# show protoco...
- Question 34: An L1 router has formed an adjacency with an L1-L2 router. U...
- Question 35: What are two characteristics of L2 circuits? (Choose two.)...
- Question 36: Click the Exhibit button. [edit] user@PE-1# show protocols r...
- Question 37: Click the Exhibit. (Exhibit) Referring to the exhibit, which...
- Question 38: You need to ensure that your high-priority traffic uses the ...
- Question 39: Click the Exhibit button. (Exhibit) AS 100 is originating an...
- Question 40: You are asked to implement route damping on a BGP router. Th...
- Question 41: Click the Exhibit button. (Exhibit) RP1 and RP2 are acting a...
- Question 42: An L2VPN (draft-kompella-mpls-l2vpn) is established between ...
- Question 43: Click the exhibit button. [edit protocols pim] user@R1# show...
- Question 44: Click the Exhibit button. (Exhibit) Given the configuration ...
- Question 45: Click the Exhibit button. (Exhibit) ISP 1 wants to configure...
- Question 46: You are connecting your OSPF router to your customer's RIP r...
- Question 47: Which routing instance type is used with a Layer 3 VPN?...
- Question 48: Which OSPFv3 router ID is valid?...
- Question 49: Click the Exhibit button. (Exhibit) You are using PIM-SM in ...
- Question 50: Click the Exhibit button. user@R1# show interfaces lo0 unit ...
- Question 51: You are asked to deploy VPLS in your network as a new servic...
- Question 52: A customer's traffic is traversing your network, which consi...
- Question 53: Which command will match communities 101:111, 111:1, and 999...
- Question 54: A PE provides VLAN VPLS service to a CE attached with two li...
- Question 55: Click the Exhibit button. (Exhibit) user@R1> show ospf in...
- Question 56: To reduce the size of OSPF Area 100, you configure the area ...
- Question 57: Which two statements are true about route leaking in a Level...
- Question 58: You are provisioning a new VPLS on your PE router. Your cust...
- Question 59: Click the Exhibit button. (Exhibit) As a network administrat...
- Question 60: A service provider wants to start using all of their LSPs fo...
- Question 61: A new service provider asked you to design its IS-IS network...
- Question 62: You have configured an OSPF stub area. The routes in the stu...
- Question 63: Click the exhibit button. user@PE2# run show 12circuit conne...
