The OSI Model Approach

(The OSI Model Approach)

(e.g., cables, hardware)

Check cables, hardware devices, and the physical connection.

Layer 1: Physical Layer

(The OSI Model Approach)

(e.g., switches, MAC addresses)

Check for hardware failure in switches or problems with MAC

addresses.

Layer 2: Data Link Layer

(The OSI Model Approach)

(e.g., routers, IP addressing)

Verify IP address assignments and router configurations.

Layer 3: Network Layer

(The OSI Model Approach)

(e.g., TCP/UDP)

Check for issues in end-to-end connections (firewalls, port

issues).

Layer 4: Transport Layer

(The OSI Model Approach)

(e.g., protocols for managing sessions)

Ensure proper session establishment and termination.

Layer 5: Session Layer

(The OSI Model Approach)

(e.g., data formatting)

Check for issues in data encoding/decoding.

Layer 6: Presentation Layer

(The OSI Model Approach)

(e.g., web browsers, email)

Check application settings, configurations, and protocols.

Layer 7: Application Layer