Home > Storage > PowerScale (Isilon) > Product Documentation > Networking > Dell PowerScale: Leaf-Spine Network Best Practices > Example 1: Network design with 252 PowerScale nodes
This example includes a proposed solution of 252 PowerScale nodes in the cluster using 32-port switches for the leaf-spine deployment:
Configuration: 252 performance-only nodes (40 GbE back end)
Assumptions or requirements:
Leaf switch | Leaf Ports à Spine switch connection |
L1 | Port 1 and 2 à Spine switch 1, 2, 3, 4 and 5 |
L2 | Port 3 and 4 à Spine switch 1, 2, 3, 4 and 5 |
L3 | Port 5 and 6 à Spine switch 1, 2, 3, 4 and 5 |
L4 | Port 7 and 8 à Spine switch 1, 2, 3, 4 and 5 |
L5 | Port 9 and 10 à Spine switch 1, 2, 3, 4 and 5 |
Port 11 and 12 à Spine switch 1, 2, 3, 4 and 5 | |
L7 | Port 13 and 14 à Spine switch 1, 2, 3, 4 and 5 |
L8 | Port 15 and 16 à Spine switch 1, 2, 3, 4 and 5 |
L9 | Port 17 and 18 à Spine switch 1, 2, 3, 4 and 5 |
L10 | Port 19 and 20 à Spine switch 1, 2, 3, 4 and 5 |
L11 | Port 21 and 22 à Spine switch 1, 2, 3, 4 and 5 |
L12 | Port 23 and 24 à Spine switch 1, 2, 3, 4 and 5 |
This example configuration includes the following:
Note: This example is accurate if you size all F600 systems with 40 GbE back-end connectivity.
Design considerations: To simplify and organize cabling, place your leaf switches accordingly (see Figure 4). As shown, two leaf switches from Int-a and two leaf switches from Int-b are spread across all racks except R8 and R3. No leaf switches are on R8 and R3, and the chassis on R8 must connect to a different rack.
To provide resiliency from a single rack failure containing all the spine switches, a suggestion would be to locate all spine switches for int-A in one rack and all spine switches for int-B in another rack.