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Cisco Bug: CSCtc76107 - QOS definition of mtu 9216 removed after upgrading nx-os

Last Modified

Jan 31, 2017

Products (3)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5020 Switch
  • Cisco Nexus 5010 Switch

Known Affected Releases


Description (partial)


Qos configuration to allow MTU of 9216 is not retained after upgrading from 4.0(1a)N2(1) to 4.1(3)N1(1a)


When the following configuration is present:

policy-map jumbo
      class class-default
        mtu 9216
   system qos
      service-policy jumbo

The conversion script doesn't keep the MTU value as can be seen in the "sh policy-map" output:

policy-map type network-qos jumbo
 class type network-qos class-fcoe
  pause no-drop
  mtu 2240
 class type network-qos class-default
  mtu 1538 <--- not what was configured
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