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Question 25 - JN0-280 discussion

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When a MAC limiting violation occurs, the switch performs which two actions by default? (Choose two.)

A.

No logging takes place.

Answers
A.

No logging takes place.

B.

It causes Layer 2 loops.

Answers
B.

It causes Layer 2 loops.

C.

The port is disabled.

Answers
C.

The port is disabled.

D.

It drops the packet.

Answers
D.

It drops the packet.

Suggested answer: C, D

Explanation:

When a MAC limiting violation occurs on a Juniper switch, the switch will perform the following actions by default:

Step-by-Step Breakdown:

Port Disabled:

When the number of MAC addresses on an interface exceeds the configured limit, the port is automatically disabled to prevent further violations. This is a protective mechanism to prevent MAC address flooding.

Packet Dropped:

Additionally, packets from the violating MAC address are dropped to prevent any further communication from that address. This ensures that only valid MAC addresses are allowed to communicate through the interface.

Example Configuration:

set ethernet-switching-options secure-access-port interface <interface-name> mac-limit 5

If more than five MAC addresses are learned, the port is disabled, and excess packets are dropped.

Juniper

Reference:

MAC Limiting: When the switch detects a MAC limiting violation, it disables the port and drops further packets from the violating MAC addresses to maintain network security.

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asked 10/10/2024
krishamrock krishqmrock
34 questions
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