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Mic77
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Switch is dropping all data - HW drops

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Hi I have an application which is sending data(FAST) to from pc to HW. It works fine. However when I have this Z9100-on switch between HW and pc, the switch is stopping the data. I have tried various settings with flow control and storm control but it doesn't help.

If I print the 'show hardware drops interface' of the interface, I cans see that Ingress Drops,Packets dropped by FP, and Port bitmap zero Drops increase by for example 1000 if I send 1000 packets.

Do you have any tips how to fix this problem ? Is this a HW buffering issue. What can I do to fix this ?

Drops in Interface Hu ...:

 

Ingress Drops                 : 468574
IBP CBP Full Drops            : 0
PortSTPnotFwd Drops           : 0
IPv4 L3 Discards              : 0
Policy Discards               : 1864
Packets dropped by FP         : 131709
(L2+L3) Drops                 : 0
Port bitmap zero Drops        : 468574
Rx VLAN Drops                 : 21
 --- Ingress MAC counters---
Ingress FCSDrops              : 0

thanks for your time.

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Mic77
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Re: Switch is dropping all data - HW drops

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Hi, 

This problem is now solved for me. 

The issue was that the data we are sending needed to have a valid source mac. 

Thanks

 

 

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Moderator
Moderator

Re: Switch is dropping all data - HW drops

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Hi,

What OS version is the switch on? How is the port configured? Are there any ACLs that would block traffic?

Thanks,
Josh Craig
Dell EMC Enterprise Support Services
Get support on Twitter @DellCaresPRO
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Mic77
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Re: Switch is dropping all data - HW drops

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Application Software Version: 9.14(1.3)
Operating System Version: 2.0

interface definition

interface hundredGigE ...
no ip address
mtu 9416
portmode hybrid
switchport
vlan-stack trunk
no shutdown

There is nothing configured that would block traffic.

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Moderator
Moderator

Re: Switch is dropping all data - HW drops

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What speed is the PC NIC, is it also 100G?

Thanks,
Josh Craig
Dell EMC Enterprise Support Services
Get support on Twitter @DellCaresPRO
Mic77
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Re: Switch is dropping all data - HW drops

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Yes that is not the problem. 

It would be good if there is some explanation for those drop counters. 

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isnuryusuf
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Re: Switch is dropping all data - HW drops

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Its really hard to find documentation related to "show hardware drops interface tengigabitethernet x/x" output

iam facing same issue btw

Drops in Interface Te 0/0:
 --- Ingress Drops      ---
Ingress Drops                 : 1051839
IBP CBP Full Drops            : 0
PortSTPnotFwd Drops           : 408
IPv4 L3 Discards              : 0
Policy Discards               : 0
Packets dropped by FP         : 1051839
(L2+L3) Drops                 : 0
Port bitmap zero Drops        : 408
Rx VLAN Drops                 : 0
 --- Ingress MAC counters---
Ingress FCSDrops              : 1
Ingress MTUExceeds            : 0
 --- MMU Drops          ---
Ingress MMU Drops             : 0
HOL DROPS(TOTAL)              : 0
HOL DROPS on COS0             : 0
HOL DROPS on COS1             : 0
HOL DROPS on COS2             : 0
HOL DROPS on COS3             : 0
HOL DROPS on COS4             : 0
HOL DROPS on COS5             : 0
HOL DROPS on COS6             : 0
HOL DROPS on COS7             : 0
HOL DROPS on COS8             : 0
HOL DROPS on COS9             : 0
HOL DROPS on COS10            : 0
HOL DROPS on COS11            : 0
HOL DROPS on COS12            : 0
HOL DROPS on COS13            : 0
HOL DROPS on COS14            : 0
TxPurge CellErr               : 0
Aged Drops                    : 0
 --- Egress MAC counters---
Egress FCS Drops              : 0
 --- Egress FORWARD PROCESSOR Drops   ---
IPv4 L3UC Aged & Drops        : 0
TTL Threshold Drops           : 0
INVALID VLAN CNTR Drops       : 0
L2MC Drops                    : 214
PKT Drops of ANY Conditions   : 236
Hg MacUnderflow               : 0
TX Err PKT Counter            : 0
 --- Error counters---
Internal Mac Transmit Errors  : 0
Unknown Opcodes               : 0
Internal Mac Receive Errors   : 0






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Moderator
Moderator

Re: Switch is dropping all data - HW drops

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Can you private message me the service tag?

Thanks,
Josh Craig
Dell EMC Enterprise Support Services
Get support on Twitter @DellCaresPRO
isnuryusuf
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Re: Switch is dropping all data - HW drops

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already
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isnuryusuf
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Re: Switch is dropping all data - HW drops

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no hope, event we only asking about the documentation related to output command, i think i will stop to use dell force10, so sad

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Mic77
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Re: Switch is dropping all data - HW drops

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this problem is still unresolved as there has been no reply to my latest questions.

 

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