Users Guide

Configure switches
21 Dell EMC Networking OS9 Switch Configuration Guide for VxRail 4.5
7 Configure switches
This section covers switch configuration for S5048F-ON switches in the different topologies. Commands for
all examples are provided as attachments to this guide.
7.1 Dual switch with VLT
This example uses a four-node VxRail cluster connected to a pair of switches configured with VLT as shown
below. Dell EMC recommends using this topology.
25GbE connections
100GbE VLTi connections,
ports 1/53-54
Rack 1
S5048F-Leaf1A S5048F-Leaf1B
VLTi
1/20 1/19 1/18 1/17 1/17 1/18 1/19 1/20
VxRail node 1
VxRail node 2
VxRail node 3
VxRail node 4
The jump box/DNS server, not shown,
is connected to port 1/9 on each
switch.
Four-node cluster connected to a pair of switches configured with VLT
The commands in the following sections are run to complete the configuration of both leaf switches. The port
numbers used in the configuration commands correspond to those shown in Figure 12.
Note: The commands in the tables below should be entered in the order shown. All commands are provided
in the file attachments named S5048F-1A-vlt.txt and S5048F-1B-vlt.txt.
7.1.1 General settings
Configure the hostname, OOB management IP address and default gateway. Specify an NTP server
accessible by the switch. Enable LLDP for troubleshooting. Enable RSTP as a precaution against loops.
Configure S5048F-Leaf1A as the primary RSTP root bridge using the bridge-priority 0 command and
S5048F-Leaf1B as the secondary RSTP root bridge using the bridge-priority 4096 command.