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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Verifying the DCB Configuration

To display DCB configurations, use the following show commands.

Table 1. Displaying DCB Configurations
Command Output
show dcb [stack-unit unit-number] Displays the data center bridging status, number of PFC-enabled ports, and number of PFC-enabled queues. On the master switch in a stack, you can specify a stack-unit number. The range is from 0 to 5.
show interface port-type slot/port pfc statistics Displays counters for the PFC frames received and transmitted (by dot1p priority class) on an interface.
show interface port-type slot/port pfc {summary | detail} Displays the PFC configuration applied to ingress traffic on an interface, including priorities and link delay.

To clear PFC TLV counters, use the clear pfc counters {stack-unit unit-number | tengigabitethernet slot/port} command.

show interface port-type slot/port ets {summary | detail} Displays the ETS configuration applied to egress traffic on an interface, including priority groups with priorities and bandwidth allocation.

To clear ETS TLV counters, enter the clear ets counters stack-unit unit-number command.

Example of the show dcb Command

Dell(conf)#show dcb stack-unit 0 port-set 0
                                    
                                    DCB Status: Enabled, PFC Queue Count: 2
                                    
                                    stack-unit Total Buffer PFC Total Buffer PFC Shared Buffer PFC Available Buffer 
                                    PP            (KB)             (KB)              (KB)                 (KB)
                                    ----------------------------------------------------------------------------------
                                    0     0    3822         1912             832               450                  
                                    Dell(conf)#
                                 

Example of the show interface pfc statistics Command

Dell#show interfaces tengigabitethernet 0/3 pfc statistics
                                    Interface TenGigabitEthernet 0/3
                                    
                                    Priority Rx XOFF Frames Rx Total Frames Tx Total Frames
                                    -------------------------------------------------------
                                    0        0              0               0
                                    1        0              0               0
                                    2        0              0               0
                                    3        0              0               0
                                    4        0              0               0
                                    5        0              0               0
                                    6        0              0               0
                                    7        0              0               0
                                 

Example of the show interfaces pfc summary Command

Dell# show interfaces tengigabitethernet 0/4 pfc summary
                                    Interface TenGigabitEthernet 0/4
                                    Admin mode is on
                                    Admin is enabled
                                    Remote is enabled, Priority list is 4
                                    Remote Willing Status is enabled
                                    Local is enabled
                                    Oper status is Recommended
                                    PFC DCBx Oper status is Up
                                    State Machine Type is Feature
                                    TLV Tx Status is enabled
                                    PFC Link Delay 45556 pause quantams
                                    Application Priority TLV Parameters :
                                    --------------------------------------
                                    FCOE TLV Tx Status is disabled
                                    ISCSI TLV Tx Status is disabled
                                    Local FCOE PriorityMap is 0x8
                                    Local ISCSI PriorityMap is 0x10
                                    Remote FCOE PriorityMap is 0x8
                                    Remote ISCSI PriorityMap is 0x8
                                    
                                    Dell# show interfaces tengigabitethernet 0/4 pfc detail
                                    Interface TenGigabitEthernet 0/4
                                    Admin mode is on
                                    Admin is enabled
                                    Remote is enabled
                                    Remote Willing Status is enabled
                                    Local is enabled
                                    Oper status is recommended
                                    PFC DCBx Oper status is Up
                                    State Machine Type is Feature
                                    TLV Tx Status is enabled
                                    PFC Link Delay 45556 pause quanta
                                    Application Priority TLV Parameters :
                                    --------------------------------------
                                    FCOE TLV Tx Status is disabled
                                    ISCSI TLV Tx Status is disabled
                                    Local FCOE PriorityMap is 0x8
                                    Local ISCSI PriorityMap is 0x10
                                    Remote FCOE PriorityMap is 0x8
                                    Remote ISCSI PriorityMap is 0x8
                                    
                                    0 Input TLV pkts, 1 Output TLV pkts, 0 Error pkts, 0 Pause Tx pkts, 0 Pause Rx pkts
                                    2 Input Appln Priority TLV pkts, 0 Output Appln Priority TLV pkts, 0 Error Appln Priority TLV Pkts
                                    
                                 

The following table describes the show interface pfc summary command fields.

Table 2. show interface pfc summary Command Description
Fields Description
Interface Interface type with stack-unit and port number.
Admin mode is on; Admin is enabled PFC Admin mode is on or off with a list of the configured PFC priorities . When PFC admin mode is on, PFC advertisements are enabled to be sent and received from peers; received PFC configuration takes effect. The admin operational status for a DCBx exchange of PFC configuration is enabled or disabled.
Remote is enabled; Priority list Remote Willing Status is enabled Operational status (enabled or disabled) of peer device for DCBx exchange of PFC configuration with a list of the configured PFC priorities. Willing status of peer device for DCBx exchange (Willing bit received in PFC TLV): enabled or disabled.
Local is enabled DCBx operational status (enabled or disabled) with a list of the configured PFC priorities.
Operational status (local port)
Port state for current operational PFC configuration:
  • Init: Local PFC configuration parameters were exchanged with peer.
  • Recommend: Remote PFC configuration parameters were received from peer.
  • Internally propagated: PFC configuration parameters were received from configuration source.
PFC DCBx Oper status Operational status for exchange of PFC configuration on local port: match (up) or mismatch (down).
Reason Reason displayed when the DCBx operational status for PFC on a port is down.
State Machine Type Type of state machine used for DCBx exchanges of PFC parameters:
  • Feature: for legacy DCBx versions
  • Symmetric: for an IEEE version
TLV Tx Status Status of PFC TLV advertisements: enabled or disabled.
PFC Link Delay Link delay (in quanta) used to pause specified priority traffic.
Application Priority TLV: FCOE TLV Tx Status Status of FCoE advertisements in application priority TLVs from local DCBx port: enabled or disabled.
Application Priority TLV: ISCSI TLV Tx Status Status of ISCSI advertisements in application priority TLVs from local DCBx port: enabled or disabled.
Application Priority TLV: Local FCOE Priority Map Priority bitmap used by local DCBx port in FCoE advertisements in application priority TLVs.
Application Priority TLV: Local ISCSI Priority Map Priority bitmap used by local DCBx port in ISCSI advertisements in application priority TLVs.
Application Priority TLV: Remote FCOE Priority Map Priority bitmap received from the remote DCBx port in FCoE advertisements in application priority TLVs.
Application Priority TLV: Remote ISCSI Priority Map Priority bitmap received from the remote DCBx port in iSCSI advertisements in application priority TLVs.
PFC TLV Statistics: Input TLV pkts Number of PFC TLVs received.
PFC TLV Statistics: Output TLV pkts Number of PFC TLVs transmitted.
PFC TLV Statistics: Error pkts Number of PFC error packets received.
PFC TLV Statistics: Pause Tx pkts Number of PFC pause frames transmitted.
PFC TLV Statistics: Pause Rx pkts Number of PFC pause frames received.
Input Appln Priority TLV pkts Number of Application Priority TLVs received.
Output Appln Priority TLV pkts Number of Application Priority TLVs transmitted.
Error Appln Priority TLV pkts Number of Application Priority error packets received.

Example of the show interface ets summary Command

Dell# show interfaces te 0/1 ets summary
                                    Interface TenGigabitEthernet 0/1
                                    Max Supported TC Groups is 4
                                    Number of Traffic Classes is 8
                                    Admin mode is on
                                    Admin Parameters :
                                    ------------------
                                    Admin is enabled
                                    TC-grp    Priority#         Bandwidth    TSA
                                    0         0,1,2,3,4,5,6,7   100%         ETS
                                    1                           0%           ETS
                                    2                           0%           ETS
                                    3                           0%           ETS
                                    4                           0%           ETS
                                    5                           0%           ETS
                                    6                           0%           ETS
                                    7                           0%           ETS
                                    
                                    Priority# Bandwidth TSA
                                    0                           13%          ETS
                                    1                           13%          ETS
                                    2                           13%          ETS
                                    3                           13%          ETS
                                    4                           12%          ETS
                                    5                           12%          ETS
                                    6                           12%          ETS
                                    7                           12%          ETS
                                    Remote Parameters:
                                    -------------------
                                    Remote is disabled
                                    
                                    Local Parameters :
                                    ------------------
                                    Local is enabled
                                    TC-grp    Priority#         Bandwidth    TSA
                                    0         0,1,2,3,4,5,6,7   100%         ETS
                                    1                           0%           ETS
                                    2                           0%           ETS
                                    3                           0%           ETS
                                    4                           0%           ETS
                                    5                           0%           ETS
                                    6                           0%           ETS
                                    7                           0%           ETS
                                    
                                    Priority#                   Bandwidth    TSA
                                    0                           13%          ETS
                                    1                           13%          ETS
                                    2                           13%          ETS
                                    3                           13%          ETS
                                    4                           12%          ETS
                                    5                           12%          ETS
                                    6                           12%          ETS
                                    7                           12%          ETS
                                    Oper status is init
                                    Conf TLV Tx Status is disabled
                                    Traffic Class TLV Tx Status is disabled
                                    
                                 

Example of the show interface ets detail Command

Dell# show interfaces tengigabitethernet 0/4 ets detail
                                    Interface TenGigabitEthernet 0/4
                                    Max Supported TC Groups is 4
                                    Number of Traffic Classes is 8
                                    Admin mode is on
                                    Admin Parameters :
                                    ------------------
                                    Admin is enabled
                                    TC-grp    Priority#         Bandwidth    TSA
                                    0         0,1,2,3,4,5,6,7   100%         ETS
                                    1                           0%           ETS
                                    2                           0%           ETS
                                    3                           0%           ETS
                                    4                           0%           ETS
                                    5                           0%           ETS
                                    6                           0%           ETS
                                    7                           0%           ETS
                                    
                                    Remote Parameters:
                                    -------------------
                                    Remote is disabled
                                    
                                    Local Parameters :
                                    ------------------
                                    Local is enabled
                                    PG-grp    Priority#         Bandwidth    TSA
                                    0         0,1,2,3,4,5,6,7   100%         ETS
                                    1                           0%           ETS
                                    2                           0%           ETS
                                    3                           0%           ETS
                                    4                           0%           ETS
                                    5                           0%           ETS
                                    6                           0%           ETS
                                    7                           0%           ETS
                                    
                                    Oper status is init
                                    ETS DCBX Oper status is Down
                                    Reason: Port Shutdown
                                    State Machine Type is Asymmetric
                                    Conf TLV Tx Status is enabled
                                    Reco TLV Tx Status is enabled
                                    
                                    
                                    0 Input Conf TLV Pkts, 0 Output Conf TLV Pkts, 0 Error Conf TLV Pkts
                                    0 Input Reco TLV Pkts, 0 Output Reco TLV Pkts, 0 Error Reco TLV Pkts
                                    
                                 

The following table describes the show interface ets detail command fields.

Table 3. show interface ets detail Command Description
Field Description
Interface Interface type with stack-unit and port number.
Max Supported TC Group Maximum number of priority groups supported.
Number of Traffic Classes Number of 802.1p priorities currently configured.
Admin mode ETS mode: on or off.

When on, the scheduling and bandwidth allocation configured in an ETS output policy or received in a DCBx TLV from a peer can take effect on an interface.

Admin Parameters ETS configuration on local port, including priority groups, assigned dot1p priorities, and bandwidth allocation.
Remote Parameters ETS configuration on remote peer port, including Admin mode (enabled if a valid TLV was received or disabled), priority groups, assigned dot1p priorities, and bandwidth allocation. If the ETS Admin mode is enabled on the remote port for DCBx exchange, the Willing bit received in ETS TLVs from the remote peer is included.
Local Parameters ETS configuration on local port, including Admin mode (enabled when a valid TLV is received from a peer), priority groups, assigned dot1p priorities, and bandwidth allocation.
Operational status (local port) Port state for current operational ETS configuration:
  • Init: Local ETS configuration parameters were exchanged with peer.
  • Recommend: Remote ETS configuration parameters were received from peer.
  • Internally propagated: ETS configuration parameters were received from configuration source.
ETS DCBx Oper status Operational status of ETS configuration on local port: match or mismatch.
Reason Reason displayed when the DCBx operational status for ETS on a port is down.
State Machine Type Type of state machine used for DCBx exchanges of ETS parameters:
  • Feature: for legacy DCBx versions
  • Asymmetric: for an IEEE version
Conf TLV Tx Status Status of ETS Configuration TLV advertisements: enabled or disabled.
Reco TLV Tx Status Status of ETS Recommendation TLV advertisements: enabled or disabled.
Input Conf TLV pkts, Output Conf TLV pkts, Error Conf TLV pkts Number of ETS Configuration TLVs received and transmitted, and number of ETS Error Configuration TLVs received.
Input Reco TLV pkts, Output Reco TLV pkts, Error Reco TLV pkts Number of ETS Recommendation TLVs received and transmitted, and number of ETS Error Recommendation TLVs received.

Example of the show stack-unit all stack-ports all pfc details Command

Dell# show stack-unit all stack-ports all pfc details
                                    
                                    stack unit 0 stack-port all
                                    Admin mode is On
                                    Admin is enabled, Priority list is 4-5
                                    Local is enabled, Priority list is 4-5
                                    Link Delay 45556 pause quantum
                                    0 Pause Tx pkts, 0 Pause Rx pkts
                                    
                                    stack unit 1 stack-port all
                                    Admin mode is On
                                    Admin is enabled, Priority list is 4-5
                                    Local is enabled, Priority list is 4-5
                                    Link Delay 45556 pause quantum
                                    0 Pause Tx pkts, 0 Pause Rx pkts
                                 

Example of the show stack-unit all stack-ports all ets details Command

Dell# show stack-unit all stack-ports all ets details
                                    Stack unit 0 stack port all
                                    Max Supported TC Groups is 4
                                    Number of Traffic Classes is 1
                                    
                                    Admin mode is on
                                    Admin Parameters:
                                    --------------------
                                    Admin is enabled
                                    TC-grp    Priority#        Bandwidth    TSA
                                    ------------------------------------------------
                                    0         0,1,2,3,4,5,6,7  100%         ETS
                                    1                          -            -
                                    2                          -            -
                                    3                          -            -
                                    4                          -            -
                                    5                          -            -
                                    6                          -            -
                                    7                          -            -
                                    8                          -            -
                                    
                                    Stack unit 1 stack port all
                                    Max Supported TC Groups is 4
                                    Number of Traffic Classes is 1
                                    Admin mode is on
                                    Admin Parameters:
                                    --------------------
                                    Admin is enabled
                                    TC-grp    Priority#        Bandwidth    TSA
                                    ------------------------------------------------
                                    0         0,1,2,3,4,5,6,7  100%         ETS
                                    1                          -            -
                                    2                          -            -
                                    3                          -            -
                                    4                          -            -
                                    5                          -            -
                                    6                          -            -
                                    7                          -            -
                                    8                          -            -
                                 

Example of the show interface DCBx detail Command

Dell# show interface tengigabitethernet 0/4 dcbx detail
                                    Dell#show interface te 0/4 dcbx detail
                                    
                                    E-ETS Configuration TLV enabled           e-ETS Configuration TLV disabled
                                    R-ETS Recommendation TLV enabled          r-ETS Recommendation TLV disabled
                                    P-PFC Configuration TLV enabled           p-PFC Configuration TLV disabled
                                    F-Application priority for FCOE enabled   f-Application Priority for FCOE disabled
                                    I-Application priority for iSCSI enabled  i-Application Priority for iSCSI disabled
                                    ----------------------------------------------------------------------------------
                                    
                                    Interface TenGigabitEthernet 0/4
                                    Remote Mac Address 00:00:00:00:00:11
                                    Port Role is Auto-Upstream
                                    DCBX Operational Status is Enabled
                                    Is Configuration Source? TRUE
                                    
                                    Local DCBX Compatibility mode is CEE
                                    Local DCBX Configured mode is CEE
                                    Peer Operating version is CEE
                                    Local DCBX TLVs Transmitted: ErPfi
                                    
                                    Local DCBX Status
                                    -----------------
                                    DCBX Operational Version is 0
                                    DCBX Max Version Supported is 0
                                    Sequence Number: 2
                                    Acknowledgment Number: 2
                                    Protocol State: In-Sync
                                    
                                    Peer DCBX Status:
                                    ----------------
                                    DCBX Operational Version is 0
                                    DCBX Max Version Supported is 255
                                    Sequence Number: 2
                                    Acknowledgment Number: 2
                                    2 Input PFC TLV pkts, 3 Output PFC TLV pkts, 0 Error PFC pkts, 0 PFC Pause Tx pkts,
                                    0 Pause Rx pkts
                                    2 Input PG TLV Pkts, 3 Output PG TLV Pkts, 0 Error PG TLV Pkts
                                    2 Input Appln Priority TLV pkts, 0 Output Appln Priority TLV pkts, 0 Error Appln Priority
                                    TLV Pkts
                                    Total DCBX Frames transmitted 27
                                    Total DCBX Frames received 6
                                    Total DCBX Frame errors 0
                                    Total DCBX Frames unrecognized 0
                                 

The following table describes the show interface DCBx detail command fields.

Table 4. show interface DCBx detail Command Description
Field Description
Interface Interface type with chassis slot and port number.
Port-Role Configured DCBx port role: auto-upstream or auto-downstream.
DCBx Operational Status Operational status (enabled or disabled) used to elect a configuration source and internally propagate a DCB configuration. The DCBx operational status is the combination of PFC and ETS operational status.
Configuration Source Specifies whether the port serves as the DCBx configuration source on the switch: true (yes) or false (no).
Local DCBx Compatibility mode DCBx version accepted in a DCB configuration as compatible. In auto-upstream mode, a port can only received a DCBx version supported on the remote peer.
Local DCBx Configured mode DCBx version configured on the port: CEE, CIN, IEEE v2.5, or Auto (port auto-configures to use the DCBx version received from a peer).
Peer Operating version DCBx version that the peer uses to exchange DCB parameters.
Local DCBx TLVs Transmitted Transmission status (enabled or disabled) of advertised DCB TLVs (see TLV code at the top of the show command output).
Local DCBx Status: DCBx Operational Version DCBx version advertised in Control TLVs.
Local DCBx Status: DCBx Max Version Supported Highest DCBx version supported in Control TLVs.
Local DCBx Status: Sequence Number Sequence number transmitted in Control TLVs.
Local DCBx Status: Acknowledgment Number Acknowledgement number transmitted in Control TLVs.
Local DCBx Status: Protocol State Current operational state of DCBx protocol: ACK or IN-SYNC.
Peer DCBx Status: DCBx Operational Version DCBx version advertised in Control TLVs received from peer device.
Peer DCBx Status: DCBx Max Version Supported Highest DCBx version supported in Control TLVs received from peer device.
Peer DCBx Status: Sequence Number Sequence number transmitted in Control TLVs received from peer device.
Peer DCBx Status: Acknowledgment Number Acknowledgement number transmitted in Control TLVs received from peer device.
Total DCBx Frames transmitted Number of DCBx frames sent from local port.
Total DCBx Frames received Number of DCBx frames received from remote peer port.
Total DCBx Frame errors Number of DCBx frames with errors received.
Total DCBx Frames unrecognized Number of unrecognizable DCBx frames received.
PFC TLV Statistics: Input PFC TLV pkts Number of PFC TLVs received.
PFC TLV Statistics: Output PFC TLV pkts Number of PFC TLVs transmitted.
PFC TLV Statistics: Error PFC pkts Number of PFC error packets received.
PFC TLV Statistics: PFC Pause Tx pkts Number of PFC pause frames transmitted.
PFC TLV Statistics: PFC Pause Rx pkts Number of PFC pause frames received.
PG TLV Statistics: Input PG TLV Pkts Number of PG TLVs received.
PG TLV Statistics: Output PG TLV Pkts Number of PG TLVs transmitted.
PG TLV Statistics: Error PG TLV Pkts Number of PG error packets received.
Application Priority TLV Statistics: Input Appln Priority TLV pkts Number of Application TLVs received.
Application Priority TLV Statistics: Output Appln Priority TLV pkts Number of Application TLVs transmitted.
Application Priority TLV Statistics: Error Appln Priority TLV Pkts Number of Application TLV error packets received.

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