Final answer:
Certain services do not work over Global VPC Peering, including Layer 2 services like Ethernet VPN, broadcast and multicast services, and potentially others depending on the cloud provider's restrictions.
Step-by-step explanation:
The question seems to refer to 'Global VPC Peering' in cloud computing services, which involves connecting separate Virtual Private Clouds (VPC) to enable them to share resources as if they were within the same network. While VPC peering can provide numerous benefits, there are certain services that don't work over global VPC peering due to limitations in how networks are interconnected.
Some examples of services that may not work over Global VPC Peering include:
- Layer 2 services like Ethernet VPN (EVPN) because VPC peering is typically a Layer 3 connection.
- Broadcast and multicast services which rely on network flooding and are generally not supported over VPC peering links.
- Some cloud providers restrict certain types of traffic or services over peering connections, such as DHCP traffic.
It is important to review the specific cloud provider's documentation for a complete list of services that are not supported over Global VPC Peering.