Dell EMC Networking S4148-ON and S4128-ON Switch Configuration Guide for Dell EMC SC Series SANs Abstract This document illustrates how to configure Dell EMC™ Networking S4148-ON and S4128-ON switches for use with Dell EMC SC Series storage using Dell EMC best practices.
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Table of contents Table of contents 1 2 Introduction ...................................................................................................................................................................5 1.1 Document conventions .......................................................................................................................................5 1.2 Audience .................................................................................................................
Table of contents 3.14 Show commands to verify DCBx, ETS, and PFC status on individual ports ....................................................15 3.15 Configure additional switches ...........................................................................................................................15 4 Revert from DCB to non-DCB configuration (optional) ..............................................................................................16 4.1 Disable DCB ..................................
Introduction 1 Introduction This document illustrates how to configure Dell EMC™ Networking S4148-ON and S4128-ON switches for use with Dell EMC SC Series storage using Dell EMC best practices. The host servers and storage controllers can be connected to the switches using the QSFP+ and QSFP28 ports with appropriate breakout cables. The switches are interconnected to each other using 40GbE cables or 100GbE cables. Optional steps are provided in section 3 to enable Data Center Bridging (DCB).
Introduction Note: The latest firmware updates and documentation can be found at Dell.com/support. 1.4 Cabling diagram The cabling diagram shown in Figure 1 represents the Dell EMC recommended method for deploying servers and SC Series arrays.
Dell EMC recommended switch configuration 2 Dell EMC recommended switch configuration The steps in this section show how to configure two Dell EMC Networking S4148-ON/S4128-ON switches in Dell SC series storage environment. Note: The configuration steps in this section are only recommended when the switch is used as a dedicated SAN for iSCSI traffic. 2.1 Hardware configuration 1. 2. 3. 4. Power on the two switches. Connect a serial cable to the serial port of the first switch.
Dell EMC recommended switch configuration 2.3 Switch profiles (only for S4148-ON and its variants) On the S4148-ON switch and its variants, switch port profiles determine the available front-panel Ethernet ports and supported breakout interfaces on uplink ports. Refer to the switch user’s guide to determine which switch profile fits for your environment. Note: Changing switch profiles will delete all configuration information from the switch except for the management port configuration.
Dell EMC recommended switch configuration 2.6 Configure login credentials OS10(config)# username admin password $0$ 2.7 Configure QSPF+ and QSFP28 ports to 4 x 10GbE breakout ports QSFP+ and QSFP28 ports on S4148-ON and S4128-ON switches can be configured as breakouts to be used with 10GbE iSCSI storage or server network adapters. To configure these ports as 4 x 10GbE ports, use the following commands.
Dell EMC recommended switch configuration 2.9 iSCSI enable The steps in this section enable iSCSI auto-detection of attached storage arrays and switch autoconfiguration. Dell PS Series and SC Series storage arrays are detected by the switch when iscsi is enabled. The switch will auto-configure for Jumbo frames with MTU 9216 and flowcontrol receive on, and transmit off for all the ports.
Dell EMC recommended switch configuration 2.13 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 (DCB) (optional) 3 Configure Data Center Bridging (DCB) (optional) To enable 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. Note: DCB switch configuration is applicable only for environments with DCB-capable SC Series arrays. 3.1 Disable iSCSI OS10# configure terminal OS10(config)# no iscsi enable OS10(config)# no iscsi session-monitoring enable 3.
Configure Data Center Bridging (DCB) (optional) 3.5 Create QOS policy map with dot1p values as trusted OS10(config)# policy-map type qos OS10(config-pmap-qos)# class class-trust OS10(config-pmap-c-qos)# trust dot1p OS10(config-pmap-c-qos)# exit OS10(config-pmap-qos)# exit OS10(config)# 3.6 Create PFC dot1p traffic class The following commands configure a network QoS class map and match the iSCSI traffic class.
Configure Data Center Bridging (DCB) (optional) 3.
Configure Data Center Bridging (DCB) (optional) 3.
Revert from DCB to non-DCB configuration (optional) 4 Revert from DCB to non-DCB configuration (optional) One method to revert from a DCB configured switch to a non-DCB configured switch is to delete the current configuration (startup-config) and follow the steps in section 2. If deleting the current configuration is not an option, use the following procedure to unconfigure DCB and enable standard flow control. Note: This is a disruptive operation that requires downtime.
Revert from DCB to non-DCB configuration (optional) 4.4 Revert to default VLAN ID on switch and arrays Once DCB is disabled on the switch, the SC Series arrays will no longer use the VLAN ID that was configured when DCB was enabled. The arrays will revert to the default or native VLAN. Therefore, a valid VLAN must be configured for all host servers, switches, and SC Series array members.
Revert from DCB to non-DCB configuration (optional) 4.8 Reload OS10# reload Proceed to reboot the system? [confirm yes/no]:yes Note: The switch will reboot. 4.9 Verify DCB status OS10# show lldp dcbx interface ethernet 1/1/ 4.10 Configure additional switch Repeat the commands from section 4 to disable DCB on additional switches.
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