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• The downlinks from the access switches supports the Layer 2 protocol (VLAN or VLAN and LAG).

– If the VLAN option is selected, the downlinks connecting to server is configured to use the VLAN protocol.

– If the VLAN and LAG option is selected, the downlinks between the leafs and ToR is configured to use VLAN,

VRRP, and LAG for redundancy.

Figure 14. Example: 2 tier Layer 3 Distributed Core

Use Case 4: 2 Tier Layer 3 Resiliency (Routed VLT)

When you select a 2 tier Layer 3 with Resiliency (Routed VLT) fabric:

• The fabric links between the aggregation and access switches supports the Layer 3 protocol with OSPF in the VLAN

interfaces.

• The uplinks between the aggregation switch and external switch (WAN) supports the Layer 3 protocol (OSPF, iBGP

or eBGP).

• The downlinks from the access switches supports the Layer 2 protocol (VLAN/VRRP or VLAN IP). During the design

phase at the Deployment Topology screen, you select the fabric type and deployment type (topology). In this

example shown below, a Layer 3 with Resiliency (Routed VLT) fabric. Based on the deployment type option selected,

the different options to be configured in downlink at the access tier.

The following section lists the topology types that you can select:

1. Layer 3 with Resiliency (Routed VLT) with stacking option – When you select the Stacking option, configure the

VLAN with the primary and secondary IP addresses for each access switch.

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Dell Active Fabric Manager Guía de usuario Pagina 58