10-10-2012 07:52 AM - edited 03-01-2019 10:40 AM
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
08-15-2013 09:34 PM
Did you ever solve this? I am having similar performance issues.
08-20-2013 09:55 AM
A network diagram would be quite useful ? is it multihop FCoE, Storage connectivity with FCoE,......
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