| Exam 642-887 | Question id=3242 | QOS in a Service Provider IP NGN Environment |
What is an important requirement with MPLS applications like Layer 3 MPLS VPNs?
| A. |
All the PE routers loopback addresses should be summarized to reduce the number of routing table entries in the core routers. | |
| B. |
Targeted hellos are required between all the PE routers. | |
| C. |
An end-to-end LSP is required between the PE routers. | |
| D. |
The LSPs that are built between the PE routers must be symmetrical (bidirectional). |