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Use Case 5: 3 Tier Layer 2

When you select a 3 tier Layer 2 fabric:

• The fabric links between core and aggregation switches supports the Layer 3 protocol.

• The fabric links between aggregation and access switches supports the Layer 2 protocol.

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

iBGP or eBGP).

• The downlink from the access switches supports the Layer 2 protocol (VLAN or VLAN/VRRP). The default setting on

the pre-deployment screen is VLAN configuration which allows you to configure downlink connections to servers.

Select the VLAN and VRRP Configuration option to support redundancy between the access switch and ToR

switches.

Figure 21. 3 Tier Layer 2 VLT Topology

Use Case 6: 3 Tier Layer 3 Resiliency (Routed VLT)

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

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

interfaces.

• The fabric links between the aggregation and access switches supports the Layer 2 protocol the Layer 2 protocol.

• 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

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Dell Active Fabric Manager Guía de usuario Pagina 62