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Dell Configuration Guide for the S4048–ON System 9.14.2.5

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Verifying the DCB Configuration

To display DCB configurations, use the following show commands.

Table 1. Displaying DCB ConfigurationsDisplaying DCB Configurations
Command Output
show qos dot1p-queue mapping Displays the current 802.1p priority-queue mapping.
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 qos priority-groups Displays the ETS priority groups configured on the switch, including the 802.1p priority classes and ID of each group.
show interface port-type 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 interface port-type slot/port command.
show interface port-type pfc statistics

Displays counters for the PFC frames received and transmitted (by dot1p priority class) on an interface.

You can use the show interface pfc statistics command even without enabling DCB on the system.
show interface port-type 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 interface port-type slot/port command.
show interface port-type DCBx detail Plays the DCBx configuration on an interface.
show stack-unit {0-11 | all} stack ports all pfc details Displays the PFC configuration applied to ingress traffic, including priorities and link delay.
show stack-unit {0-11 | all} stack ports all ets details Displays the ETS configuration applied to ingress traffic on stack-links, including priorities and link delay.

Examples of the show Commands

The following example shows the show dot1p-queue mapping command.

DellEMC(conf)# show qos dot1p-queue-mapping
Dot1p Priority: 0 1 2 3 4 5 6 7
Queue         : 0 0 0 1 2 3 3 3

The following example shows the show dcb command.

DellEMC# show dcb
stack-unit 2 port-set 0
     DCB Status : Enabled
 PFC Port Count : 56 (current), 56 (configured)
PFC Queue Count : 2 (current),  2 (configured)

The following example shows the show qos priority-groups command.

DellEMC#show qos priority-groups
priority-group ipc
  priority-list 4
  set-pgid 2

The following example shows the output of the show qos dcb-map test command.

DellEMC#show qos dcb-map test
-----------------------

State   :Complete
PfcMode:ON
--------------------
PG:0 TSA:ETS  BW:50  PFC:OFF
Priorities:0 1 2 5 6 7


PG:1 TSA:ETS  BW:50  PFC:ON
Priorities:3 4

The following example shows the show interfaces pfc summary command.

DellEMC# show interfaces tengigabitethernet 1/4 pfc summary
Interface TenGigabitEthernet 1/4
    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

DellEMC# show interfaces tengigabitethernet 1/4 pfc detail
Interface TenGigabitEthernet 1/4
    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

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

Table 2. show interface pfc summary Command Descriptionshow 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) DCBx operational status (enabled or disabled) with a list of the configured PFC priorities.
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).
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 Status of FCoE advertisements in application priority TLVs from remote peer port: enabled or disabled.
Application Priority TLV: Remote ISCSI Priority Map Status of iSCSI advertisements in application priority TLVs from remote peer port: enabled or disabled.
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

The following example shows the show interface pfc statistics command.

DellEMC#show interfaces te 1/1 pfc statistics
Interface TenGigabitEthernet 1/1
Interface       Priority        Rx XOFF Frames          Rx Total Frames         Tx Total Frames
-----------------------------------------------------------------------------------------------
Te 1/1          P0              0                       0                       0
Te 1/1          P1              0                       0                       0
Te 1/1          P2              0                       0                       0
Te 1/1          P3              0                       0                       0
Te 1/1          P4              0                       0                       0
Te 1/1          P5              0                       0                       0
Te 1/1          P6              0                       0                       0
Te 1/1          P7              0                       0                       0

The following example shows the show interface ets summary command.

DellEMC(conf)#do show interfaces te 1/1 ets summary

Interface TenGigabitEthernet 1/1
Max Supported TC is 4
Number of Traffic Classes is 8
Admin mode is on

Admin Parameters :
------------------
Admin is enabled

PG-grp     Priority#        BW-%      BW-COMMITTED           BW-PEAK         TSA
                             %     Rate(Mbps) Burst(KB) Rate(Mbps) Burst(KB)
----------------------------------------------------------------------------------
0          3                 25    -          -         -          -         ETS
1          4                 25    -          -         -          -         ETS
2          0,1,2,5,6,7       50    -          -         -          -         ETS
3                            -     -          -         -          -         -
4                            -     -          -         -          -         -
5                            -     -          -         -          -         -
6                            -     -          -         -          -         -
7                            -     -          -         -          -         -

Remote Parameters :
-------------------
Remote is disabled

Local Parameters :
------------------
Local is enabled

PG-grp     Priority#        BW-%      BW-COMMITTED           BW-PEAK         TSA
                             %     Rate(Mbps) Burst(KB) Rate(Mbps) Burst(KB)
----------------------------------------------------------------------------------
0          3                 25    -          -         -          -         ETS
1          4                 25    -          -         -          -         ETS
2          0,1,2,5,6,7       50    -          -         -          -         ETS
3                            -     -          -         -          -         -
4                            -     -          -         -          -         -
5                            -     -          -         -          -         -
6                            -     -          -         -          -         -
7                            -     -          -         -          -         -

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

The following example shows the show interface ets detail command.

DellEMC(conf)# show interfaces tengigabitethernet 1/1 ets detail
Interface TenGigabitEthernet 1/1
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
0 Input Conf TLV Pkts, 0 Output Conf TLV Pkts, 0 Error Conf TLV Pkts
0 Input Traffic Class TLV Pkts, 0 Output Traffic Class TLV Pkts, 0 Error Traffic Class TLV
Pkts

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

Table 3. show interface ets detail Command Descriptionshow interface ets detail Command Description
Field Description
Interface Interface type with stack-unit and port number.
Maximum 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.
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.
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.
ETS TLV Statistic: Input Conf TLV pkts Number of ETS Configuration TLVs received.
ETS TLV Statistic: Output Conf TLV pkts Number of ETS Configuration TLVs transmitted.
ETS TLV Statistic: Error Conf TLV pkts Number of ETS Error Configuration TLVs received.

The following example shows the show stack-unit all stack-ports all pfc details command.

DellEMC(conf)# show stack-unit all stack-ports all pfc details

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

stack unit 2 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

The following example shows the show stack-unit all stack-ports all ets details command.

DellEMC(conf)# 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                          -            -
DellEMC(conf)# show stack-unit all stack-ports all ets details
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                          -            -

Stack unit 2 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                          -            -

The following example shows the show interface DCBx detail command (IEEE).

DellEMC(conf-if-te-1/17-lldp)#do sho int te 2/12 dc d

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 2/12
  Remote Mac Address 00:01:e8:8a:df:a0
    Port Role is Manual
  DCBx Operational Status is Enabled
  Is Configuration Source? FALSE
  Local DCBx Compatibility mode is IEEEv2.5
  Local DCBx Configured mode is IEEEv2.5
  Peer Operating version is IEEEv2.5
  Local DCBx TLVs Transmitted: ERPFi
  1 Input PFC TLV pkts, 2 Output PFC TLV pkts, 0 Error PFC pkts
  0 PFC Pause Tx pkts, 0 Pause Rx pkts
  1 Input ETS Conf TLV Pkts, 1 Output ETS Conf TLV Pkts, 0 Error ETS Conf TLV Pkts
  1 Input ETS Reco TLV pkts, 1 Output ETS Reco TLV pkts, 0 Error ETS Reco TLV Pkts

The following example shows the show interface DCBx detail command (legacy CEE).

DellEMC(conf-if-te-1/17-lldp)#do sho int te 1/14 dc d

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 1/14
  Remote Mac Address 00:01:e8:8a:df:a0
    Port Role is Auto-Upstream
  DCBx Operational Status is Enabled
  Is Configuration Source? FALSE
  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: 1
  Acknowledgment Number: 1
  Protocol State: In-Sync

Peer DCBx Status:
----------------
  DCBx Operational Version is 0
  DCBx Max Version Supported is 0
  Sequence Number: 1
  Acknowledgment Number: 1
  Total DCBx Frames transmitted 994
  Total DCBx Frames received 646
  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 Descriptionshow interface DCBx detail Command Description
Field Description
Interface Interface type with chassis slot and port number.
Port-Role Configured DCBx port role: auto-upstream, auto-downstream, config-source, or manual.
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.

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