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16 SCG1006 | Cisco Nexus 5548UP Switch Configuration Guide for Dell PS Series SANs
Note: The following steps are optional and will enable jumbo MTU for the default class (non-iSCSI
traffic).
switch(config-pmap-nq)#class type network-qos class-default
switch(config-pmap-nq-c)#mtu 9216
switch(config-pmap-nq-c)# exit
switch(config-pmap-nq)# exit
3.7 Apply the Nexus policies
switch(config)# system qos
switch(config-sys-qos)# service-policy type qos input iscsi-in-policy
switch(config-sys-qos)# service-policy type queuing input iscsi-in-policy
switch(config-sys-qos)# service-policy type queuing output iscsi-in-policy
switch(config-sys-qos)# service-policy type network-qos iscsi-nq-policy
switch(config-sys-qos)# exit
switch(config)# exit
3.8 Save configuration
switch#copy running-config startup-config
3.9 Configure Additional Switch
Repeat the commands from sections 3.1 through 3.8 to configure the second switch.
3.10 Disabling DCB (optional)
Note: With the current Cisco Nexus firmware, it is not possible to fully disable DCB functionality
correctly. Using the configuration steps in section 2 of this document results in a proper non-DCB
environment. In addition, disabling LLDP support can effectively prevent the negotiation of DCB by
preventing the transmission of DCBx frames. However, disabling LLDP may also reduce functionality
necessary for other protocols. Only disable LLDP if instructed by Dell Support. The following example
disables LLDP support on ports 1 through 32.
switch#configure
switch(config)#interface ethernet 1/1-32
switch(config-if-range)# no lldp receive
switch(config-if-range)# no lldp transmit