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Low performance in FCOE TX in Nexus 5000

Dear Mister

I have a problem in the transmision of data. I have a Nexus 5000, using VFC(FCoE) toward FC ports. The ethernet with FCOE, also have IP traffic, and thsi traffic is functioning rigth, but, in the same wire, the FCoE show low performance.

How can I see the problems? The wire do not show CRC errors or another problems. The wire I saw OK. The only strange thing in the Nexus 5000, is at level qos discarded packet in the qos-group 1, this group is for FCOE.

I attachs the next :

NK5-AGG-SW02# show queue int e1/18Ethernet1/18 queuing information:

  TX Queuing

    qos-group  sched-type  oper-bandwidth

        0       WRR             50

        1       WRR             50

  RX Queuing

    qos-group 0

    q-size: 360960, HW MTU: 1500 (1500 configured)

    drop-type: drop, xon: 0, xoff: 2256

    Statistics:

        Pkts received over the port             : 6285

        Ucast pkts sent to the cross-bar        : 6260

        Mcast pkts sent to the cross-bar        : 25

        Ucast pkts received from the cross-bar  : 2920

        Pkts sent to the port                   : 2997

        Pkts discarded on ingress               : 0

        Per-priority-pause status               : Rx (Inactive), Tx (Inactive)

    qos-group 1

    q-size: 79360, HW MTU: 2158 (2158 configured)

    drop-type: no-drop, xon: 128, xoff: 252

     Statistics:

        Pkts received over the port             : 100813

        Ucast pkts sent to the cross-bar        : 100502

        Mcast pkts sent to the cross-bar        : 0

        Ucast pkts received from the cross-bar  : 106763

        Pkts sent to the port                   : 106763

        Pkts discarded on ingress               : 311

        Per-priority-pause status               : Rx (Inactive), Tx (Inactive)

  Total Multicast crossbar statistics:

    Mcast pkts received from the cross-bar      : 77

NK5-AGG-SW02#   [15D [J

NK5-AGG-SW02# show queuing int e1/19

Ethernet1/19 queuing information:

  TX Queuing

    qos-group  sched-type  oper-bandwidth

        0       WRR             50

        1       WRR             50

  RX Queuing

    qos-group 0

    q-size: 360960, HW MTU: 1500 (1500 configured)

    drop-type: drop, xon: 0, xoff: 2256

    Statistics:

        Pkts received over the port             : 1034

        Ucast pkts sent to the cross-bar        : 1008

        Mcast pkts sent to the cross-bar        : 26

        Ucast pkts received from the cross-bar  : 2175

        Pkts sent to the port                   : 2251

        Pkts discarded on ingress               : 0

        Per-priority-pause status               : Rx (Inactive), Tx (Inactive)

    qos-group 1

    q-size: 79360, HW MTU: 2158 (2158 configured)

    drop-type: no-drop, xon: 128, xoff: 252

     Statistics:

        Pkts received over the port             : 5092

        Ucast pkts sent to the cross-bar        : 5002

        Mcast pkts sent to the cross-bar        : 0

        Ucast pkts received from the cross-bar  : 2449

        Pkts sent to the port                   : 2449

        Pkts discarded on ingress               : 90

        Per-priority-pause status               : Rx (Inactive), Tx (Inactive)

  Total Multicast crossbar statistics:

    Mcast pkts received from the cross-bar      : 76

The discarded packets means something??

I attach the configuration.

I will aprreciate your help.

Best Regards

Everyone's tags (7)
2 REPLIES 2
Beginner

Low performance in FCOE TX in Nexus 5000

Did you ever solve this? I am having similar performance issues.

Advocate

Low performance in FCOE TX in Nexus 5000

A network diagram would be quite useful ? is it multihop FCoE, Storage connectivity with FCoE,......

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