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This chapter describes how to set up an IP fabric for media network.
The number and types of leaf switches required in your IP fabric depend on the number and types of endpoints in your broadcasting center.
Follow these steps to help determine how many leaf switches you need:
Count the number of endpoints (cameras, microphones, etc.) in your broadcasting center (for example, 90 10-Gbps endpoints and 30 40-Gbps endpoints).
Determine the type of leaf switches required based on the type of endpoints in your broadcasting center.
For 10-Gbps endpoints, you need to use the Cisco Nexus 92160YC-X leaf switches.
For 40-Gbps endpoints, you can use the Cisco Nexus 9236C or 9272Q leaf switches.
Determine the number of leaf switches required based on the number of endpoints and uplinks that each leaf switch supports.
Leaf Switch |
Endpoint Capacity |
Uplink Capacity |
---|---|---|
Cisco Nexus 9236C switch |
25 x 40-Gbps endpoints |
10 x 100-Gbps (1000-Gbps) uplinks |
Cisco Nexus 9272Q switch |
36 x 40-Gbps endpoints |
36 x 40-Gbps (1440-Gbps) uplinks |
Cisco Nexus 92160YC-X switch |
40 x 10-Gbps endpoints |
4 x 100-Gbps (400-Gbps) uplinks |
For example:
For 90 10-Gbps endpoints, you need three Cisco Nexus 92160YC-X leaf switches because each switch can support up to 40 10-Gbps endpoints.
For 30 40-Gbps endpoints, you need two Cisco Nexus 9236C leaf switches because each switch can support up to 25 40-Gbps endpoints or one Cisco Nexus 9272Q leaf switch because each switch can support up to 36 40-Gbps endpoints.
Make sure that the uplink bandwidth (toward the spine switch) and the downstream bandwidth (toward the endpoints) are equal.
Use this equation to determine the uplink bandwidth:
Uplink Capacity per Leaf Switch x Number of Leaf Switches = Uplink Bandwidth
For example:
400 Gbps (uplink capacity for each Cisco Nexus 92160YC-X switch) x 3 Cisco Nexus 92160YC-X leaf switches = 1200-Gbps uplink bandwidth
1000 Gbps (uplink capacity for each Cisco Nexus 9236C switch) x 2 Cisco Nexus 9236C leaf switches = 2000-Gbps uplink bandwidth
1200-Gbps uplink bandwidth (for 3 Cisco Nexus 92160YC-X leaf switches) + 1200-Gbps uplink bandwidth (for 2 Cisco Nexus 9236C leaf switches) = 2400-Gbps total uplink bandwidth
Use this equation to determine the downstream bandwidth:
Endpoint Capacity per Leaf Switch x Number of Leaf Switches = Downstream Bandwidth
For example:
40 x 10-Gbps (400-Gbps endpoint capacity) for each Cisco Nexus 92160YC-X leaf switch x 3 leaf switches = 1200-Gbps downstream bandwidth
25 x 40-Gbps (1000-Gbps endpoint capacity) for each Cisco Nexus 9236C leaf switch x 2 leaf switches = 2000-Gbps downstream bandwidth
1200-Gbps downstream bandwidth (for 3 Cisco Nexus 92160YC-X leaf switches) + 1200-Gbps downstream bandwidth (for 2 Cisco Nexus 9236C leaf switches) = 2400-Gbps total downstream bandwidth
If the total uplink bandwidth and downstream bandwidth are equal, your topology is valid. You can now determine the number of achievable flows. If the uplink bandwidth and downstream bandwidth are not equal, you must rework your topology until it is valid.
Using the examples provided in this section, the topology would look like this:
Use this equation to determine the number of possible flows in your IP fabric:
Total Bandwidth ÷ Flow Size = Number of Achievable Flows
The flow size is configurable and is typically based on the type of video technology used in your broadcasting center. For more information, see Configuring NBM.
For example:
3200-Gbps total bandwidth ÷ 1.5-Gbps flow size (for HD video) = 2133 possible flows