Deployment Guide

47 Leaf-Spine Deployment and Best Practices Guide | Version 1.0
9 Example 3: Layer 2 with Dell EMC leaf and spine switches
This section provides configuration information to build the layer 2 leaf-spine topology shown in Figure 16.
Dell EMC Networking S4048-ON switches are used at the leaf layer and Dell EMC Networking S6010-ON
switches are used at the spine layer.
Rack 2
Spine 1-6010 Spine 2-S6010
Le af 4-S4048 Leaf 3-S4048
Le af 2-S4048
Leaf 1-S4048
VLTi
Fo 1/25-1/28
Te 1/48
Te 1/48
Te 1/48
Fo 1/51
Te 1/48
Fo 1/49-1/50
Po 1 Po 2
Server 1
Server 2
Fo 1/31-1/32
Fo 1/25-1/28
Fo 1/49-1/50
Fo 1/51
Fo 1/51 Fo 1/51
Fo 1/53
Fo 1/53 Fo 1/53Fo 1/53
VLTi
VLTi
VLAN 10, VLAN 20
Al l s pi ne s
VLAN 10, VLAN 20
All leafs
IP address :
192.168.20.1 and
192.168.10.1
IP address :
192.168.20.2 and
192.168.10.2
On both servers,
VLAN 10:
subnet 192.168.10.0/24
VLAN 20:
subnet 192.168.20.0/24
Rack 1
Example 3: Layer 2 leaf-spine topology with Dell EMC leaf and spine switches
Note: All switch configuration files for the topology in Figure 16 are contained in the attachment named
Example3_config_files.pdf. The files may be edited as needed in a plain text editor and commands pasted
directly into switch consoles. Dell EMC Networking switches start at their factory default settings per
Appendix A.
9.1 S4048-ON leaf switch configuration
The following sections outline the configuration commands issued to the S4048-ON leaf switches to build the
topology in. The commands detailed below are for L2-Leaf1-S4048 and L2-Leaf2-S4048. The configuration
commands for L2-Leaf3-S4048 and L2-Leaf4-S4048 are similar and are provided in the attachments.
Note: On S4048-ON switches, Telnet is enabled and SSH is disabled by default. Both services require the
creation of a non-root user account to login. If needed, it is a best practice to use SSH instead of Telnet for
security. SSH can optionally be enabled with the command: (conf)#ip ssh server enable.
A user account can be created to access the switch via SSH with the command
(conf)#username ssh_user sha256-password ssh_password