| Exam 642-887 | Question id=3310 | 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 the PE8 router, how many total prefixes for have an incoming local label assigned (including the imp-null)?
| A. |
21 | |
| B. |
22 | |
| C. |
45 | |
| D. |
66 |
On PE8 issue: show mpls ip binding summary and look at "assigned in labels".
That value is the correct answer NOT "learned out label".
Router# show mpls forwarding-table
Local Outgoing Prefix Bytes label Outgoing Next Hop
Label Label or VC or Tunnel Id switched interface
26 No Label 10.253.0.0/16 0 Et4/0/0 10.27.32.4
28 1/33 10.15.0.0/16 0 AT0/0.l point2point
29 Pop Label 10.91.0.0/16 0 Hs5/0 point2point
1/36 10.91.0.0/16 0 AT0/0.l point2point
30 32 10.250.0.97/32 0 Et4/0/2 10.92.0.7
32 10.250.0.97/32 0 Hs5/0 Point2point
34 26 10.77.0.0/24 0 Et4/0/2 10.92.0.7
26 10.77.0.0/24 0 Hs5/0 point2point
35 No Label[T] 10.100.100.101/32 0 Tu301 pointZpoint
36 Pop Label 10.1.0.0/16 0 IIs5/0 point2point
1/37 10.1.0.0/16 0 AT0/0.1 point2point
-----------------------------------------------------------------------------------
Router# show mpls ldp bindings
10.0.0.0/8, rev 9
local binding: label: imp-null
remote binding: lsr: 10.10.0.55:0, label: 17
remote binding: lsr: 10.66.0.66:0, label: 18
remote binding: lsr: 10.0.0.44:0, label: imp-null
172.16.0.0/8, rev 17
local binding: label: 19
remote binding: lsr: 10.0.0.55:0, label: imp-null
remote binding: lsr: 10.66.0.66:0, label: 16
remote binding: lsr: 10.0.0.44:0, label: imp-null
192.168.0.66/32, rev 19
local binding: label: 20
remote binding: lsr: 10.0.0.55:0, label: 19
remote binding: lsr: 10.66.0.66:0, label: imp-null
remote binding: lsr: 10.0.0.44:0, label: 18