Alcatel-Lucent NRS II – Wide Area Network Services — Question 2
Fill in the blanks: The device at the beginning of an LSP is referred to as the_________, and the device at the end of an LSP is referred to as the ___________.
Answer options
- A. PE, P
- B. LER, LSR
- C. LSR, LER
- D. iLER, eLER
- E. eLER, iLER
- F. P, PE
Correct answer: D
Explanation
The correct answer is D, as the ingress Label Edge Router (iLER) is at the beginning of the Label Switched Path (LSP) and the egress Label Edge Router (eLER) is located at the end. The other options do not accurately represent the roles of the devices in the LSP configuration.