300-445 Question 219
Select 4You are tasked with configuring alert rules to monitor the health of your enterprise network. The network consists of MPLS-based WAN links, BGP routing, and VPNs. The goal is to detect potential issues such as packet loss, high latency, BGP routing table anomalies, and VPN disconnections. Which of the following configurations would be MOST effective for achieving this goal?
- A
Set up SNMP-based alerts to trigger when error counters on MPLS interfaces exceed a defined threshold.
- B
Configure syslog alerts to monitor BGP route flap events and unexpected changes to the routing table.
- C
Enable NetFlow-based alerts to identify abnormal traffic patterns and congestion on VPN tunnels.
- D
Create static threshold-based alerts for CPU utilization on core routers, regardless of network activity.
- E
Use Internet Insights to monitor global latency and packet loss patterns specific to your MPLS provider.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To effectively monitor the network's health, you need to configure alert rules that align with the specific challenges of the environment. SNMP, syslog, and NetFlow provide targeted visibility into MPLS, BGP, and VPN performance issues, while Internet Insights offers global intelligence on latency and packet loss. Static CPU utilization thresholds do not address the stated goals and can result in irrelevant alerts, making it an ineffective choice.
- A. Correct.
This option is correct because SNMP can monitor error counters on MPLS interfaces, which is critical for identifying packet loss or link health issues.
- B. Correct.
This option is correct because syslog alerts can help detect BGP route flap events and unexpected changes in the routing table, which are essential for maintaining routing stability.
- C. Correct.
This option is correct because NetFlow can provide visibility into traffic flows, allowing detection of congestion or unusual activity on VPN tunnels.
- D. Incorrect.
This option is incorrect because static CPU utilization thresholds are not directly related to the stated goals of packet loss, latency, or routing anomalies. Such alerts might lead to noise without actionable insights.
- E. Correct.
This option is correct because Internet Insights can monitor global latency and packet loss trends, particularly for MPLS providers, which aligns with the goals of the question.