| Exam 642-887 | Question id=3309 | MPLS/LDP in a Service Provider IP NGN Environment |
Enter the proper CLI commands and analysis the outputs on the Cisco routers to answer the multiple-choice questions.
From the network topology diagram, click on the router icon to gain access to the console of the router No console or enable passwords are required.
There are four multiple-choice questions with this task. Be sure to answer all four questions before selecting the Next button.
Not all the CLI commands or commands options are supported or required for this simulation.
For example, the show running-config command is NOT supported in this simulation.
All the devices in this simulation have been pre-configured and you are not required to enter in any configurations.
Referring to the network topology diagram shown in the exhibit, use the proper CLI commands on the PE8 and P2 routers and interpret the supported CLI commands outputs to nnswer the four multiple choice questions.
PE8#
RP/0/RSP0/CPU0:P2#
From PE8 router, what is the label action used to reach the P2 loopback 0 interface 10.0.2.1/32?
| A. |
Swap label 35 with label 16004 | |
| B. |
Push label 16004 | |
| C. |
Pop label 35 | |
| D. |
Pop label 16009 | |
| E. |
Push Label 16009 | |
| F. |
Swap label 35 with label 16009 |
show mpls forwarding-table,
find prefix 10.0.2.1 and you will see there under outgoing Label "Pop Label" (This is actually logic because the prefix is directly connected and therefore the packet will forward without label). If the router should forward any packet to that prefix, the packet should be received with Local label on PE8 (Local Label = 35), the router will remove it and forward it without Label.