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Cisco Bug: CSCtb42108 - N1K: Error when reconfigure QoS policy attached to system uplink profile

Last Modified

Feb 07, 2017

Products (1)

  • Cisco Nexus 1000V Switch for VMware vSphere

Known Affected Releases

4.0(4)SV1(1a)

Description (partial)

Symptom:
The system uplink port-profile is configured with output QoS policy below:
mac access-list n1k-control-vlan
  10 permit any any vlan 196
mac access-list n1k-packet-vlan
  10 permit any any vlan 197
mac access-list control-packet-vlans
  10 permit any any vlan 196
  20 permit any any vlan 197
!
class-map type qos match-all n1k-control-vlan
  match access-group name n1k-control-vlan
class-map type qos match-all n1k-packet-vlan
  match access-group name n1k-packet-vlan
class-map type qos match-all control-packet-vlans
  match access-group name control-packet-vlans
!
policy-map type qos mark-control-packet-vlans
  class n1k-control-vlan
    set cos 5
  class n1k-packet-vlan
    set cos 5
  class  control-packet-vlans
    set cos 5
!
port-profile system-uplink
  capability uplink
  service-policy type qos output mark-control-packet-vlans
  system vlan 193,195-197

ESX hosts physical interfaces are assigned to the system-uplink port-profiles. With the policy-map still attached to the port-profile, reconfiguring the policy-map would result in error, and configuration failed; subsequent attempts to change the attached policy-map failed as well:
n1kv# conf t
n1kv(config)# policy-map type qos mark-control-packet-vlans
n1kv(config-pmap-qos)# class control-packet-vlans
n1kv(config-pmap-c-qos)# set cos 5
n1kv(config-pmap-c-qos)# no class n1k-control-vlan
2009 Aug 13 22:14:44 n1kv-eng %ACLMGR-3-ACLMGR_PPF_ERROR: PPF error: DDB Error: 0x41170040 (ddb_srv_ses_rmtsrv_dset_unln/1859)

Note: Operation in progress, please check the status using
"show system internal ipqos status".
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# show system internal ipqos status
Current operation: CLI Configuration
Current operation stage: Verify in progress
Current CLI: no class n1k-control-vlan
Last operation: CLI Configuration
Last operation status: success
CLI: set cos 5

n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# show system internal ipqos status
Current operation: CLI Configuration
Current operation stage: Verify in progress
Current CLI: no class n1k-control-vlan
Last operation: CLI Configuration
Last operation status: success
CLI: set cos 5

n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# show system internal ipqos status
Current operation: None
Last operation: CLI Configuration
Last operation status: Operation timed out (0x41170014)
CLI: no class n1k-control-vlan

n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# sh policy-map mark-control-packet-vlans


  Type qos policy-maps
  ====================

  policy-map type qos mark-control-packet-vlans
    class  n1k-control-vlan
      set cos 5
    class  n1k-packet-vlan
      set cos 5
    class  control-packet-vlans
      set cos 5
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# no class n1k-control-vlan
Note: Operation in progress, please check the status using
"show system internal ipqos status".
n1kv(config-pmap-qos)#
n1kv(config-pmap-qos)# policy-map type qos mark-control-packet-vlans
Service not responding
n1kv(config)#
n1kv(config)# show system internal ipqos status
Current operation: CLI Configuration
Current operation stage: Verify in progress
Current CLI: no class n1k-control-vlan
Last operation: CLI Configuration
Last operation status: Operation timed out (0x41170014)
CLI: no class n1k-control-vlan

n1kv(config)#
n1kv(config)# policy-map type qos mark-control-packet-vlans
Service not responding
n1kv(config)# 2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning: Spurious status from cl ff010182 .
2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning:     MTS RX  t 4a5ca524b61  id 0x00038d37  opc 0x1953  siz   71 .
2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning:       src 00000101:0000015f  dst 00000101:00000179 .
2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning:         DDB msg_type Abort_status ses ff0101d9100002ab seq 02  dsiz 25  ntx 0 .
2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning:         from id 0xff010182 uid 386 vdc 1 slot 64 node 3  to 1 dsts .
2009 Aug 13 22:36:27 n1kv-eng %IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning:           to id 0xff0101d9 uid 473 vdc 1 slot 64 node 3  sts 00000000  vld n .

n1kv(config)#
n1kv(config)# show system internal ipqos status
Current operation: None
Last operation: CLI Configuration
Last operation status: Operation timed out (0x41170014)
CLI: no class n1k-control-vlan

n1kv(config)#

Conditions:
Dynamically reconfigure the QoS policy-map attached to the system-uplink port-profile that VEM physical interfaces are assigned to, while traffic are running through VLANs that are designated as system VLANs,
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