What are possible causes?

Exhibit:

As shown in the figure, RTA connects to RTB and RTC A TE tunnel is configure on RTA to reach RTC. The TE tunnel cannot be successfully established .

How ever, CSPF-based calculation is successful and RTA does not receives any Path Erro messages .

What are possible causes?
A . An interface address on RTP is the same as the address of interface RTA-1.
B . RSVP-TE is not configured at interface RTB-2.
C . Different authentication keys are configured on interface RTB-2 and RTC-1.
D . The reserved bandwidth is insufficient at interface RTB-2

View Answer

Answer: D