Victoria - Fotolia

Get started Bring yourself up to speed with our introductory content.

Leaf-spine networks take the lead

Leaf-spine networks are replacing traditional three-layer designs. Get the basics explained here.

This article can also be found in the Premium Editorial Download: Modern Infrastructure: Cloud migration confidential:

Leaf-spine networks are poised to take over from traditional three-layer designs. 

Leaf-spine has made inroads in modern data centers, favored for responding better to changing data traffic patterns.

Expert Ethan Banks, founder of the Packet Pushers podcast, explains how leaf-spine works and how it’s different from three-layer models.

The traditional three-layer model is familiar to many networking pros.

Leaf-spine network design may look similar to three-layer designs, with more switches on the spine layer. But all links are used to forward traffic.

Leaf-spine networks do have shortcomings, one of which is possible oversubscription between network layers.

Figure 1. The traditional, three-layer network design
Figure 1. The traditional, three-layer network design

 

Figure 2. A small leaf-spine network
Figure 2. A small leaf-spine network

 

Figure 3. Oversubscription between network layers
Figure 3. Oversubscription between network layers

Next Steps

Read Ethan’s full article on leaf-spine network topologies

This was last published in September 2014

Dig Deeper on SDN and other network strategies

PRO+

Content

Find more PRO+ content and other member only offers, here.

Join the conversation

1 comment

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

Figure #3 is wrong. You need 4 x spine switches to get 3:1 oversuscription ratio using 40G interfaces..
Cancel

-ADS BY GOOGLE

SearchWindowsServer

SearchServerVirtualization

SearchCloudComputing

Close