350-701 · Question #175
An engineer notices traffic interruption on the network. Upon further investigation, it is learned that broadcast packets have been flooding the network. What must be configured, based on a predefined
The correct answer is D. Storm Control. To mitigate network traffic interruption caused by excessive broadcast packets, Storm Control should be configured on network devices, based on a predefined threshold, to prevent flooding.
Question
An engineer notices traffic interruption on the network. Upon further investigation, it is learned that broadcast packets have been flooding the network. What must be configured, based on a predefined threshold, to address this issue?
Options
- ABridge Protocol Data Unit guard
- Bembedded event monitoring
- Caccess control lists
- DStorm Control
How the community answered
(20 responses)- A10% (2)
- B15% (3)
- C5% (1)
- D70% (14)
Why each option
To mitigate network traffic interruption caused by excessive broadcast packets, Storm Control should be configured on network devices, based on a predefined threshold, to prevent flooding.
Bridge Protocol Data Unit (BPDU) guard protects the Spanning Tree Protocol (STP) domain by shutting down ports that receive unexpected BPDUs, and it does not specifically address broadcast storms.
Embedded Event Monitoring (EEM) allows for customized, on-device event detection and action scripting, but it is a general-purpose automation tool, not a specific mechanism to prevent broadcast storms by thresholding.
Access Control Lists (ACLs) can filter traffic based on various criteria but are not primarily designed for dynamic, threshold-based rate limiting of broadcast traffic to prevent storms.
Storm Control is a network feature that monitors incoming traffic levels for specific types of packets, such as broadcast, multicast, or unknown unicast. It drops packets that exceed a configured threshold, effectively preventing broadcast storms from flooding the network and causing service disruptions.
Concept tested: Network broadcast storm prevention
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12_2_55_se/configuration/guide/scg/swtchgde/stormc.html
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