---
title: "Layer 2 mode"
description: "Details about using Layer 2 (L2) with OVHcloud Connect"
url: https://docs.ovhcloud.com/pt/guides/network/ovhcloud-connect/occ-layer2
lang: pt
lastUpdated: 2020-09-14
---
# Layer 2 mode

## Objective

**Learn more about Layer 2 implementation and connection for the OVHcloud Connect solution.**

## Instructions

### Layer 2 implementation

![L2 Implementation](/images/network/ovhcloud-connect/occ-layer2/occ-l2-implementation.png)
The L2 tunnel is forwarded directly to/from the vRack, so all L2 traffic is forwarded to/from the customer inter-connection.

L2 traffic refers to Ethernet frames, with an 802.1q header, if applicable:

- Ethernet broadcast is forwarded.
- Unknown Ethernet unicast is forwarded.
- Multicast is forwarded (considered broadcast, limited to 20pps).
- Specific point-to-point Ethernet frames (like LLDP or LACP) are not forwarded

Only one OVHcloud Connect L2 is supported per vRack: each PoP/EntryPoint can only be associated with one DC/EndPoint.

![Supported and unsupported L2 Design](/images/network/ovhcloud-connect/occ-layer2/occ-l2-supported-unsupported.png)
With L2 mode, redundancy cannot be exploited between two PoP/EntryPoint. The only solution is to use a LAG on a PoP/EntryPoint.

### Connection mode details

L2 operates at the Ethernet level. The customer's vRack is extended "as-is" from OVHcloud and forwarded to the customer link. Transparent to VLANs, this mode is the best way to inter-connect the customer's legacy network with an OVHcloud vRack.

![L2 Trafic](/images/network/ovhcloud-connect/occ-layer2/occ-l2-trafic.png)
The L2 mode is limited to a point-to-point topology: a backup link through a second PoP is not supported.

![L2 Topologies](/images/network/ovhcloud-connect/occ-layer2/occ-l2-topologies.png)
LACP is mandatory for aggregation when 2 links are configured with PoP.

Jumbo frames up to 9000 bytes are supported.

Connections between a PoP and a DC benefit from the OVHcloud backbone. An internal link failure is therefore supported and will not impact customer traffic.

## Go further

If you need training or technical assistance to implement our solutions, contact your sales representative or click on [this link](https://www.ovhcloud.com/pt/professional-services/) to get a quote and ask our Professional Services experts for assisting you on your specific use case of your project.

Join our community of users on [https://community.ovh.com/en/](https://community.ovh.com/en/).