Dell Fabric Manager Dell Fabric Manager Deployment Guide 1.0.0 - Page 14

Type 2: Medium Core Design, Use the Type 1: Large Core design when - data center

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Use the Type 1: Large Core design when: • The line rate-performance with an oversubscription ratio of 1:1 between the spines and leaves is required. • The current and future planned uplinks and downlinks on the leaves for the distributed core is less than or equal to 2048 ports. • The leaves do not act as a ToR. For redundancy, each leaf in a large core design can connect 2 to 16 spines. The Type 1: Large 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: Large Core design has the following: • 640 Gigabit of interlink maximum capacity to the Spine (16 x 40Gig) • 64 10 Gig Ethernet ports for server connectivity and WAN connectivity Type 2: Medium Core Design With a Type 2: Medium Core design, the Z9000 spines connect to the S4810 leaves at a fixed 40 GbE line rate. The maximum number of leaves is based on the maximum number of ports on the spine, with the Z9000, 32 ports. The maximum number of spines is 4 and the maximum number of leaves is 32, as shown in the following figure. This illustration shows a networking system architecture in a data center which is composed of a distributed core containing a set of ToRs to which servers, storage devices, and network appliances such as load balancers or network security appliances are connected. Application services, network services, and network security services can be running either on physical machines or virtual machines. 14

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Use the Type 1: Large Core design when:
•
The line rate-performance with an oversubscription ratio of 1:1 between the spines and leaves is required.
•
The current and future planned uplinks and downlinks on the leaves for the distributed core is less than or equal
to 2048 ports.
•
The leaves do not act as a ToR.
For redundancy, each leaf in a large core design can connect 2 to 16 spines. The Type 1: Large 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: Large Core design has the following:
•
640 Gigabit of interlink maximum capacity to the Spine (16 x 40Gig)
•
64 10 Gig Ethernet ports for server connectivity and WAN connectivity
Type 2: Medium Core Design
With a Type 2: Medium Core design, the Z9000 spines connect to the S4810 leaves at a fixed 40 GbE line rate. The
maximum number of leaves is based on the maximum number of ports on the spine, with the Z9000, 32 ports. The
maximum number of spines is 4 and the maximum number of leaves is 32, as shown in the following figure. This
illustration shows a networking system architecture in a data center which is composed of a distributed core containing
a set of ToRs to which servers, storage devices, and network appliances such as load balancers or network security
appliances are connected. Application services, network services, and network security services can be running either
on physical machines or virtual machines.
14