QUESTION: 177

Which of the following describes what happens when facility backup fast reroute is enabled for a LSP? Choose three answers.

Each PLR will signal a bypass tunnel that avoids the next-hop node or link.
When a failure occurs, the PLR will push an additional label onto the label stack and start forwarding traffic onto its bypass tunnel.
The ingress router will include a RRO object in the path message to indicate the routers that should be PLRs and MPs along the protected path.
The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish bypass tunnels.
When the bypass tunnel is in use, the MP will include the RRO object in its PathErr message, with the local protection in use flag set to notify the ingress router that it is using the bypass tunnel.

Answer(s): A,B,D

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QUESTION: 178

The solicited node address for the destination node address 1:DB8::30A:216 4DFF:FE14:6CAE is:

2001::FF:FE:14:6CAE
2001::1:FF:14:6CAE
FF02.DB8::30A:216:4DFF:FE14.6CAE
FF02::1:FF14:6CAE

Answer(s): D

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LDP is enabled on both ends of a point-to-point link, but the "show router Idp status" command indicates that LDP is operationally down. The Oper Down Reason field shows the message "systemIpDown." What might cause this condition?

The LSP is in the administrative down state.
The router's router ID overlaps another.
The router's interfaces do not have LDP running.
The router's system interface requires an IP address

Answer(s): D

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QUESTION: 180

Click on the exhibit.

Before the link failure, all routers have operational OSPF adjacencies between them and there is a BFD session between routers R1 and R3.
After the link failure, which of the following affects the IGP convergence time?

The convergence time depends on the value of the OSPF hello timers on routers R1 andR3.
The convergence time depends on the value of the OSPF hello timers and Dead interval on routers R1 and R3.
The convergence time depends on the value of the BFD interval and multiplier settings on routers R1 andR3.
The convergence time depends on the time taken by the switches to detect the link failure.

Answer(s): C

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