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Question 54/63
A PE provides VLAN VPLS service to a CE attached with two links. You want to prevent Layer 2 loops and provide link redundancy.
Which two actions will accomplish this task? (Choose two.)
Which two actions will accomplish this task? (Choose two.)
Correct Answer: B,D
Explanation/Reference:
D: To prevent the formation of Layer 2 loops between the CE devices and the multihomed PE routers, Juniper recommends that you employ the Spanning Tree Protocol (STP) on your CE devices. Layer 2 loops can form due to incorrect configuration. Temporary Layer 2 loops can also form during convergence after a change in the network topology.
References: http://www.juniper.net/documentation/en_US/junos16.1/topics/topic-map/vpls-bgp- multihoming.html
D: To prevent the formation of Layer 2 loops between the CE devices and the multihomed PE routers, Juniper recommends that you employ the Spanning Tree Protocol (STP) on your CE devices. Layer 2 loops can form due to incorrect configuration. Temporary Layer 2 loops can also form during convergence after a change in the network topology.
References: http://www.juniper.net/documentation/en_US/junos16.1/topics/topic-map/vpls-bgp- multihoming.html
- Question List (63q)
- Question 1: Click the Exhibit button. (Exhibit) RR: protocols { bgp { gr...
- Question 2: You are asked to configure PIM-SM in your network. Your impl...
- Question 3: Click the Exhibit button. (Exhibit) ISP1 has created an L3VP...
- Question 4: Click the Exhibit button. (Exhibit) Referring to the exhibit...
- Question 5: You work for a service provider and need to build EVPN servi...
- Question 6: Which two statements are true about IS-IS adjacency formatio...
- 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...
- Question 9: Which address range has been specifically reserved for use w...
- 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...
- Question 13: Which statements are true about NG MVPNs? (Choose two.)...
- 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...
- Question 32: An MX Series router has received a BGP prefix from its peer....
- 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...
