Dell S3048-ON VxFlex Network Deployment Guide using EMC Networking 25GbE switc - Page 34

7.2 3. Save the file (:qw [ENTER]) and then enter the following command to restart the network services for the virtual machine: VxFlex-172-16-33-12:~ # service network restart Shutting down network interfaces: eth0 device: VMware VMXNET3 Ethernet Controller done eth1 device: VMware VMXNET3 Ethernet Controller done Eth2 device: VMware VMXNET3 Ethernet Controller done Shutting down service network done Hint: you may set mandatory devices in /etc/sysconfig/network/config Setting up network interfaces: eth0 device: VMware VMXNET3 Ethernet Controller eth0 IP address: 172.16.33.12/24 done eth1 device: VMware VMXNET3 Ethernet Controller eth1 IP address: 172.16.34.12/24 done eth2 device: VMware VMXNET3 Ethernet Controller eth2 IP address: 172.16.35.12/24 done Setting up service network done 4. Use the ping command to validate jumbo frames connectivity to another configured SVM: VxFlex-172-16-33-12:~ # ping -M do -s 8972 172.16.33.13 PING 172.16.34.13 (172.16.34.13) 8972(9000) bytes of data. 8980 bytes from 172.16.34.13: icmp_seq=1 ttl=64 time=0.393 ms 8980 bytes from 172.16.34.13: icmp_seq=2 ttl=64 time=0.398 ms 8980 bytes from 172.16.34.13: icmp_seq=3 ttl=64 time=0.366 ms Configure Quality of Service using DiffServ The basis of Quality of Service (QoS) is traffic differentiation. In this guide, different types of traffic are classified accordingly and are thereby given priorities throughout the network using differentiated services (DiffServ). The priorities are marked using Differentiated Services Code Point (DSCP). Once marking is complete, QoS tools are applied to each specific traffic type to affect traffic behavior. DiffServ operates independently on each router in a stand-alone model, meaning that each router can use the classification to affect traffic behavior differently. Traffic is separated into two broad categories and marked using DSCP markings based on what the network needs to provide for that type of traffic: • Traffic with higher priority requirements is given a DSCP mark of 46 • Traffic with lower priority requirements is not marked VxFlex has native QoS capabilities that are not demonstrated in this paper. For instance, the amount of traffic the SDC generates can be limited per volume with a high level of granular control. For more information, see the Dell EMC VxFlex v2.x Deployment Guide. A DSCP value of 46 corresponds to expedited forwarding and maps to queue 5 on the S5248F-ON switch. These actions ensure that the switch prioritizes this type of traffic above unmarked traffic that uses the default queue 0. In this deployment guide, both the physical and virtual networks are configured to classify traffic. The VDS is configured to initially insert the DSCP value while the physical switches are configured to trust the default DSCP value mapping. 34 VxFlex Network Deployment Guide using Dell EMC Networking 25GbE switches and OS10EE