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Selecting a Layer 3 Distributed Core Fabric Design
For large fabric deployments, use the Layer 3 distributed core fabric. AFM supports the following distributed core fabric
designs:
Type 1: Extra Large Core Fabric
Type 2: Large Distributed Core Fabric
Type 3: Medium Distributed Core Fabric
Type 4: Small Distributed Core Fabric
To select the appropriate Layer 3 distributed core fabric design, use the following table as a guide. For more information
about a Layer 3 distributed core, see:
Overview of a Distributed Core
Key Considerations for Designing a Distributed Core Fabric
Flowchart for Designing and Deploying a Fabric.
With a Layer 3 distributed core topology, you select the Layer 3 option using the Design Wizard on the Deployment
Topology screen. For information about distributed core, see Selecting a Distributed Core Design.
DL BW — Downlink Bandwidth
UL BW — Uplink Bandwidth
Attention: The maximum number of downlinks is based on using 2 uplinks.
Table 1. 2 Tier Layer 3 Distributed Core Topologies
Type OS
Ratio
DL
BW
Maximum #
of
Downlink
Maximum #
of Spine
Devices
Maximum
# of Leaf
Devices
UL
BW
Fabric Link
Bandwidth
Between
the Spine
and Leaf
Possible
Topologies (Spine
and Leaf)
Type 1-Extra Large
Core
1:1 10G 2046 16
32
10G 40G Z9000/Z9000 or
S6000/S6000
Type 2-Large Core
1:1 10G 2046 32
64
10G 10G S4810/S4810
Type 3-Medium
Core
3:1 10G 766 4
32
10G 10G S4810/S4810
Type 3-Medium
Core
4:1 10G 1662 3
32
10G 40G Z9000/S4810 or
S6000/S4810
Type 4-Small Core
5:1 10G 894 2
8
10G 10G S4810/S4810
Type 4-Small Core
3:1 10G 1534 4
16
10G 40G Z9000/S4810 or
S6000/S4810
Type 1: Extra Large Distributed Core Fabric
With a Type 1: Extra Large Distributed Core fabric design, the Z9000 spines (or S6000 spines) connect to the Z9000 leaves
(S6000 leaves) at a fixed 40 Gb line rate. The maximum number of leaves is based on the maximum number of ports on
the spine, 32 ports for the Z9000, as shown in the following figure.
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