ACSA Archives - Page 2 of 5 - 루바루바의 엣지있는 네트워크 이야기

[ACSA Education #32] Layer 3 Fundamentals

I have been posting about 30 ACSA related training posts and have covered content centered on Layer 2. Now, I will focus on Layer 2.

In the last post, we briefly looked at LAG (Link Aggregation Group). LAG has two operating modes.

A switch must provide connectivity to many devices located on different VLANs. All traffic generated here must be routed between switches.

If the Rate Limit Spanning Tree configuration is incorrect, a loop in Layer 2 may be created. In this situation,

Common Spanning Tree (CST) is a single spanning tree for the entire network regardless of the number of VLANs.

RSTP (Rapid STP) operates a loop-free topology through the following algorithm: Root Switch Selection

Continuing from last time, I would like to learn about STP (Spanning Tree Protocol), and among them, RSTP (Rapid STP). The RSTP algorithm

Last time, when we talked about network redundancy, we also talked about the loop that can occur due to it.

Network communication is crucial to IT infrastructure. It often has a significant impact on critical services. As shown below:

Earlier, while looking at Layer 2 technologies such as VLAN and 802.1Q, I also mentioned frames. In a previous post, I also mentioned OSI