300-510 · Question #229
Refer to the exhibit. R1 is sending data traffic to R6 using the same SRGB range as the other routers in the topology, but it is also using a non-default SRLB range. Which two configuration tasks…
The correct answer is B. Configure an adjacency SID from SRLB range 1002 to 6005. E. Set the default SRGB range to 16000 to 23999. Options B and E address the two distinct problems: R1's SRLB is non-default (1002–6005), so any adjacency SIDs assigned on R1 must fall within that configured SRLB range - that's B. Separately, "normal" SRGB operations require the default global block of 16000–23999; E restores…
Question
Refer to the exhibit. R1 is sending data traffic to R6 using the same SRGB range as the other routers in the topology, but it is also using a non-default SRLB range. Which two configuration tasks must the engineer perform to enable normal SRGB and SRLB operations on this network? (Choose two.)
Exhibit
Options
- AConfigure router R2 with adjacency SID 4002 to enable it to reach R4.
- BConfigure an adjacency SID from SRLB range 1002 to 6005.
- CSet the SRGB range to 1002 to 6005.
- DConfigure router R1 with adjacency SID 1003 to enable it to reach R2.
- ESet the default SRGB range to 16000 to 23999.
How the community answered
(22 responses)- A14% (3)
- B50% (11)
- C9% (2)
- D27% (6)
Explanation
Options B and E address the two distinct problems: R1's SRLB is non-default (1002–6005), so any adjacency SIDs assigned on R1 must fall within that configured SRLB range - that's B. Separately, "normal" SRGB operations require the default global block of 16000–23999; E restores that standard range so all routers in the topology use consistent prefix SIDs.
Why the distractors fail:
- A is wrong because R2's adjacency SID configuration to reach R4 is unrelated to normalizing R1's SRGB/SRLB setup.
- C is wrong because setting the SRGB to 1002–6005 would overlap with the configured SRLB range (1002–6005), which causes a conflict - SRGB and SRLB must not overlap.
- D is wrong because, while adjacency SID 1003 falls inside the SRLB range, the task as stated focuses on a specific router-to-router path rather than the required general configuration principle (which B captures correctly).
Memory tip: Think G = Global = 16000-23999 (default) and L = Local = adjacency SIDs must live inside whatever SRLB you configured. If SRLB is non-default, your adjacency SIDs follow it; if SRGB is non-default, "normal" means resetting it to the standard range.
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