Question 186 of 2,011
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300-410 Practice Question: Is troubleshooting why the NMS cannot poll the…
A network engineer is troubleshooting why the NMS cannot poll the CPU utilization of router R7 via SNMP. The router has 'snmp-server community cisco RO' configured. The NMS can poll interface statistics and routing table entries successfully. What is the most likely cause?
⚠ Common exam trap
Cisco often tests the distinction between SNMP polling (GET operations) and SNMP notifications (traps), leading candidates to incorrectly select 'snmp-server enable traps cpu' when the real issue is a restricted SNMP view that blocks the CPU utilization OID subtree.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The engineer configured an SNMP view that excludes the CPU utilization OID tree.
The NMS can poll interface statistics and routing table entries, which are typically included in the default SNMP view, but cannot poll CPU utilization. This indicates that an SNMP view has been configured that explicitly excludes the OID tree for CPU utilization (e.g., 1.3.6.1.4.1.9.9.109 or similar), while still allowing other MIB objects. The 'snmp-server community cisco RO' command alone would normally grant full read-only access unless a view is applied to restrict it.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The engineer configured an SNMP view that excludes the CPU utilization OID tree.
Why this is correct
Correct because an SNMP view can restrict access to specific MIB objects; if the view does not include the CPU OIDs, polling fails.
- ✗
The router needs the 'snmp-server enable traps cpu' command to allow CPU polling.
Why it's wrong here
Incorrect because that command enables CPU traps, not polling; polling is independent.
- ✗
The NMS is using an incorrect OID for CPU utilization; the correct OID is in the CISCO-PROCESS-MIB.
Why it's wrong here
Incorrect because the NMS can poll other OIDs, so it is likely using the correct OID; the issue is on the router side.
- ✗
The router's CPU is not supported for SNMP polling due to hardware limitations.
Why it's wrong here
Incorrect because most Cisco routers support CPU polling via SNMP.
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Last reviewed: Jul 4, 2026
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