Dell Active Fabric Manager Deployment Manual page 24

For redundancy, each leaf in a large core design can connect 2 to 16 spines. The Type 1: Extra Large Distributed Core
Design uses a 1:2 spine-to-leaf ratio. As a result, the maximum number of spines for this design is 16 and the maximum
number of leaves is 32.
Each Z9000 leaf for the Type 1: Extra Large Distributed Core design has the following:
• Six hundred forty Gigabit of fabric interlink maximum capacity to the Spine (16 x 40 Gb)
• Forty-eight 10 GbE ports for server connectivity and WAN connectivity
Type 2: Large Distributed Core Fabric
Use the Type 2: Large Distributed Core fabric design when:
• You require a fabric interlink bandwidth between the spines and leaves of 10 GbE is required.
• The current and future planned uplinks and downlinks on the leaves for the fabric is less than or equal to 2048
ports.
• The leaves act as a switch or ToR-leaf switch. Within the ToR, the downlink protocol can be either VLAN or
VLAN and LAG.
With a Type 2: Large Distributed Core fabric design, the S4810 spines connect to the S4810 leaves at a fixed 10 GbE. The
maximum number of spines is 32 and the maximum number of leaves is 64, as shown in the following figure.
Figure 5. Type 2: Large Distributed Core Fabric Design
Each S4810 leaf for the Type 2: Large Distributed Core fabric design has the following:
• Forty gigabit of fabric interlink maximum capacity to the spine (4x 10 Gb)
• Thirty-two 10 Gigabit ports will be used for fabric interlink and thirty–two 10 Gb ports are used for the downlinks
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