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Cisco Catalyst 3850 Switch Configuration Guide for Dell PS Series SANs | SCG3299
2.5
Configure policy-map and increase queue multiplier
Switch(config)#
policy-map single-queue-buffer
Switch(config-pmap)#
class class-default
Switch(config-pmap-c)#
bandwidth percent 100
Switch(config-pmap-c)#
queue-buffers ratio 100
Switch(config-pmap-c)#
exit
Switch(config-pmap)#
exit
Note:
Cisco issue CSCuu14019 and other related issues require the following buffer multiplier command to
prevent output queue drops.
Switch(config)#
qos queue-softmax-multiplier 1200
2.6
Configure port-channel interfaces
Switch(config)#
interface port-channel 1
Switch(config-if)#
switchport
Switch(config-if)#
flowcontrol receive on
Switch(config-if)#
exit
Note:
10 Gb ports 1/1/3 and 1/1/4 are used for the port-channel. Change the port number in the following
command if using other ports for the port channel between two switches.
Switch(config)#
interface range tenGigabitEthernet 1/1/3 - 4
Switch(config-if-range)#
no shutdown
Switch(config-if-range)#
channel-group 1 mode active
Switch(config-if-range)#
service-policy output single-queue-buffer
Switch(config-if-range)#
exit