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Dell EMC recommended switch configuration
9 Dell EMC Networking S4248-ON Switch Configuration Guide for Dell EMC Unity, SC Series, and PS Series
iSCSI SANs | SCG4077
2 Dell EMC recommended switch configuration
These steps show how to configure two S4248-ON switches with a Link Aggregation Group (LAG). The
switches are interconnected using two of the 40GbE Quad Small Form-factor Pluggable (QSFP) ports or
100GbE QSFP28 ports. The LAG is configured for Dynamic Link Aggregation Control Protocol (LACP). This
example uses physical ports 47 and 48 (QSFP28) for the switch interconnect (LAG) and the 10GbE SFP
ports for host server and storage controller connections.
Note: LAGs for inter-switch connections are mandatory for PS Series, optional for SC Series, and not
connected for Dell EMC Unity iSCSI SAN environments.
Note: The factory default user ID/password is admin/admin.
2.1 Hardware configuration
Note: Do not connect any server NIC or storage controller cables to the switch before performing the
following configuration steps.
1. Power on the two switches.
2. Connect a serial cable to the serial port of the first switch.
3. Using PuTTY or another terminal utility, open a serial connection session to the switch.
4. Open the terminal emulator and configure it to use the serial port (COM1, COM2). Configure serial
communications for 115200 N, 8, 1 and no flow control.
5. Perform all CLI steps from section 2 and section 3 (optional) on switch 1. Repeat this process for
switch 2.
6. Required for PS Series (optional for SC Series and not applicable for Dell EMC Unity): Connect
the QSFP28 interconnect cables between the switches by connecting physical port 47 on switch 1 to
physical port 47 on switch 2, and physical port 48 on switch 1 to physical port 48 on switch 2. See the
interconnect configuration in Figure 3.
7. Connect all server NIC and storage controller cables to the switch.
2.2 Check switch operating system version
OS10# show version
Note: If the active version displayed here is not 10.4.0 R3 or later, visit the Force10 Portal and download the
latest update for the switches.