What is Layer 2 and Layer 3 discovery and its significance in simple terms?

[Suggy]

ServiceNow Discovery -

1. can anyone explain what is Layer 2 and Layer 3 discovery in simple terms?

2. OOB layer 3 discovery is enabled via system properties [glide.discovery.L3_mapping]. What will happen if I disable them? I mean what use case I will miss out?

[Suggy]

@James Behrens Apologies, I just updated my question with more clarity. I was referring to this system property - glide.discovery.L3_mapping

[JulietD]

1. Layer 2 and Layer 3 Discovery in Simple Terms:

Layer 2 Discovery:

It focuses on discovering devices connected within the same network or subnet.

It identifies devices such as switches, routers, and other connected hardware, and maps their physical connections (e.g., which port connects to which device).

Use Case: Helps in understanding direct device-to-device connectivity and relationships within a local network.

Layer 3 Discovery:

It discovers devices across different subnets or networks by analyzing IP-level communication.

This involves discovering routers, routing tables, and IP addresses to understand network segmentation and routing paths.

Use Case: Helps in building a broader view of the network, including how subnets are connected via routers.

2. What Happens if Voice System Properties are Disabled?

Voice system properties in ServiceNow control features related to voice-enabled interactions, such as voice assistants or telephony integrations.

If you disable them:

Voice-enabled features will stop working:

Any functionality that uses voice commands, voice processing, or telephony integrations (e.g., IVR systems) will become inactive.

Users won’t be able to interact with ServiceNow through voice commands.

Impact on specific modules:

If you’re using voice features in modules like Virtual Agent or CSM (Customer Service Management), those features will be disabled.

Performance considerations:

Disabling voice properties might reduce the load on the system slightly if these features are not used.

If your implementation doesn’t use voice functionalities, disabling them will likely have no adverse effect.

[Suggy]

@JulietD  May I know how "Voice system properties" is related to Layer 2 and layer 3 Discovery?