Dell EMC Networking S4248-ON Switch Configuration Guide for Dell EMC Unity, SC Series, and PS Series iSCSI SANs Abstract This document illustrates how to configure the Dell EMC™ Networking S4248-ON switch for use with Dell EMC Unity, Dell EMC SC Series, or Dell™ PS Series storage using Dell EMC best practices.
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Table of contents Table of contents 1 Introduction ...................................................................................................................................................................5 1.1 Document conventions .......................................................................................................................................5 1.2 Audience ....................................................................................................................
Table of contents 3.11 Apply policies and VLAN ID on port channel and its member ports .................................................................16 3.12 Set system QoS policies ...................................................................................................................................17 3.12.1 Switch OS 10.3.1 to 10.4.0 ..........................................................................................................................17 3.12.2 Switch OS 10.4.
Introduction 1 Introduction This document illustrates how to configure the Dell EMC™ Networking S4248-ON switch for use with Dell EMC Unity, Dell EMC SC Series, or Dell™ PS Series storage using Dell EMC best practices. Link aggregation groups (LAGs) for inter-switch connections are mandatory for PS Series, optional for SC Series, and not connected for Dell EMC Unity iSCSI SAN environments. If using inter-switch connections, the switches are interconnected to each other using QSFP28 cables.
Introduction 1.4 Cabling diagram Refer to one of the following cabling sections that is applicable to your storage system: SC Series (section 1.4.1), Dell EMC Unity (section 1.4.2), or PS Series (section 1.4.3). 1.4.1 SC Series cabling diagram The cabling diagram in Figure 1 represents the Dell EMC recommended method for deploying servers and SC Series storage arrays.
Introduction 1.4.2 Dell EMC Unity cabling diagram The cabling diagram in Figure 3 represents the Dell EMC recommended method for deploying servers and Dell EMC Unity storage arrays.
Introduction 1.4.3 PS Series cabling diagram The cabling diagram in Figure 3 represents the Dell EMC recommended method for deploying servers and PS Series arrays. The two switches are connected to each other using a port-channel interconnect.
Dell EMC recommended switch configuration 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).
Dell EMC recommended switch configuration 2.3 Delete startup configuration Note: This example assumes a switch is using the default configuration settings. Using the delete startupconfiguration command will set the startup configuration file to its default settings. Always back up your configuration settings prior to performing any configuration changes. OS10# delete startup-configuration Proceed to delete startup-config [confirm yes/no(default)]yes OS10# reload System configuration has been modified.
Dell EMC recommended switch configuration Example: Configure a QSFP28 port as a 4 x 25GbE breakout. OS10(config)# interface breakout 1/1/ map 25g-4x Use the following command to check the port interface status: OS10# show interface status 2.7 Disable link auto-negotiation (SC Series SAN with T6225 or T62100 adapter) Note: This section applies only to SC Series iSCSI SANs that use the Chelsio ® T6225 or T62100 adapter.
Dell EMC recommended switch configuration 2.9 Enable Jumbo frames and flow control OS10(config)# interface range ethernet 1/1/1–1/1/40 OS10(conf-range-eth1/1/1-1/1/40)# mtu 9216 OS10(conf-range-eth1/1/1-1/1/40)# flowcontrol receive on OS10(conf-range-eth1/1/1-1/1/40)# flowcontrol transmit off 2.10 Configure spanning tree on edge ports OS10(conf-range-eth1/1/1-1/1/40)# spanning-tree port type edge OS10(conf-range-eth1/1/1-1/1/40)# exit OS10(config)# no spanning-tree disable 2.
Dell EMC recommended switch configuration 2.14 Configure additional switch Repeat the commands from section 2 to configure the second switch. Note: The preceding procedure places all switch ports in the default VLAN. If preferring to place ports in a non-default VLAN, refer to the switch documentation.
Configure Data Center Bridging (optional) 3 Configure Data Center Bridging (optional) To enable Data Center Bridging (DCB) mode on the switch, use the commands in this section. Note: Complete the switch configuration steps in section 2 before configuring the switch for DCB mode. 3.1 Disable iSCSI OS10# configure terminal OS10(config)# no iscsi enable OS10(config)# no iscsi session-monitoring enable 3.2 Disable 802.
Configure Data Center Bridging (optional) 3.5 Create Priority Flow Control dot1p traffic class The following commands configure a network QoS class map and match the iSCSI traffic class. OS10(config)# class-map type network-qos OS10(config-cmap-nqos)# match qos-group 4 OS10(config-cmap-nqos)# exit 3.
Configure Data Center Bridging (optional) 3.
Configure Data Center Bridging (optional) This configuration guide uses ports 1/1/47 and 1/1/48 as port-channel member ports. They are configured using the following commands.
Configure Data Center Bridging (optional) 3.15 Show commands to verify DCBx, ETS, and PFC status on individual ports OS10# show lldp dcbx interface ethernet 1/1/ OS10# show lldp dcbx interface ethernet 1/1/ pfc detail OS10# show lldp dcbx interface ethernet 1/1/ ets detail 3.16 Show commands to verify iSCSI enable status OS10# show iscsi OS10# show iscsi storage-devices OS10# show iscsi sessions 3.
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