Tag Archives: MPLS

An engineer must extend Layer 2 Between two campus sites connected through an MPLS backbone that encapsulates Layer 2 and Layer 3 data Which action must the engineer perform on the routers to accomplish this task?

A. Configure a EtherChannel for E-LAN. B. Configure a pseudowire for E-LINE. C. Configure Cisco MPLS TE for use with E-TREE. D. Configure QoS for MPLS and E-ACCESS Answer: Option B. Explanation:  No answer description available for this question Show AnswerDiscussion The post An engineer must extend Layer 2 Between two campus sites connected through an MPLS backbone… Read More »

A network operator working for a telecommunication company with an employee 3994:37:650 is implementing a cisco Unified MPLS solution. What is the effect of this implementation?

Refer to the exhibit. A network operator working for a telecommunication company with an employee 3994:37:650 is implementing a cisco Unified MPLS solution. What is the effect of this implementation? A. EIGRP is deployed between the PEs and ABRs with RFC 3107. B. OSPF is deployed between the PEs and ABRs with RFC 3107. C. IS-IS is deployed… Read More »

A network engineer is configuring a newly installed PE router at the regional gateway location. The new PE router must use MPLS core routing protocols with the existing P router, and LDP sessions between the two routers must be protected to provide faster MPLS convergence. Which configuration must the engineer perform on the network so that LDP sessions are established?

A. Enable communication over TCP port 646 for T-LDP hello messages. B. Enable RSVP-TE FRR on the LDP interface to protect the LDP session between routers. C. Enable LDP session protection on either one of the routers, which allows them to autonegotiate. D. Set the LDP session protection timer on each router to the same value. Answer: Option… Read More »

An engineer is implementing MPLS OAM to monitor traffic within the MPLS domain. Which action must the engineer perform to prevent packets from being forwarded beyond the service provider domain when the LSP is down?

A. Configure a private IP address as the destination address of the headend router of Cisco MPLS TE. B. Disable IP redirects only on outbound interfaces. C. Disable IP redirects on all ingress interfaces. D. Implement the destination address for the LSP echo request packet in the 127.x.y.z/8 network. Answer: Option D. Explanation:  No answer description available for… Read More »

An engineer is implementing a Cisco MPLS TE tunnel to improve the streaming experience for the clients of a video-on-demand server. Which action must the engineer perform to configure extended discovery to support the MPLS LDP session between the headend and tailend routers?

A. Configure a targeted neighbor session. B. Configure an access list on the interface to permit TCP and UDP traffic. C. Configure a Cisco MPLS TE tunnel on both ends of the session. D. Configure the interface bandwidth to handle TCP and UDP traffic between the LDP peers. Answer: Option A. Explanation:  https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ldp/configuration/12-4m/mp-ldp-12-4m-book.pdf Show AnswerDiscussion The post An… Read More »

The network team must implement MPLS LDP session protection with two requirements: * Session protection is provided for core loopback IP addresses only. * The LDP session must remain operational for one hour when the WAN link on PE-XR1 fails. Which configuration must the team implement on PE-XR1?

Refer to the exhibit. The network team must implement MPLS LDP session protection with two requirements: * Session protection is provided for core loopback IP addresses only. * The LDP session must remain operational for one hour when the WAN link on PE-XR1 fails. Which configuration must the team implement on PE-XR1? A. configure terminal ipv4 access-list LDP-SESSION-PROTECTION… Read More »

An engineer configured R6 as the headend LSR of an RSVP-TE LSP to router XR2, with the dynamic path signaled as R6-R2-R5-XR2. and set the OSPF cost of all links to 1. MPLS autotunnel backup Is enabled on all routers to protect the LSP. Which two NNHOP backup tunnels should the engineer use to complete the implementation? (Choose two.)

Refer to the exhibit. An engineer configured R6 as the headend LSR of an RSVP-TE LSP to router XR2, with the dynamic path signaled as R6-R2-R5-XR2. and set the OSPF cost of all links to 1. MPLS autotunnel backup Is enabled on all routers to protect the LSP. Which two NNHOP backup tunnels should the engineer use to… Read More »

A customer has requested that the service provider use a Cisco MPLS TE tunnel to force the E-line service to take a specific route What is used to send the traffic over the tunnel?

A. static route B. preferred path C. forwarding adjacency D. autoroute destination Answer: Option B. Explanation:  No answer description available for this question Show AnswerDiscussion The post A customer has requested that the service provider use a Cisco MPLS TE tunnel to force the E-line service to take a specific route What is used to send the traffic… Read More »

Which two statements describe primary differences between MPLS Layer 2 and Layer 3 VPNs? (Choose two.)

A. Layer 2 VPNs use IPsec tunneling, but Layer 3 VPNs use L2TPv3 tunneling. B. Layer 2 VPNs use AToM, but Layer 3 VPNs use MPLS/BGP. C. Layer 2 VPNs use BGP, but Layer 3 VPNs use VPLS. D. Layer 2 VPNs use L2TPv3 tunneling, but Layer 3 VPNs use GRE tunneling. E. Layer 2 VPNs use IPsec… Read More »