PowerScale: Gen 6 Increase Ierrs on netstat -i for bge interface

a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; } An increasing number of Input errors (Ierrs) on the bge interface when issuing the "netstat -i" command

Example:
 

Name   Mtu   Network    Address             Ipkts    Ierrs    Idrop  Opkts  Oerrs  Coll
bge0   1500 <Link#3>    00:60:16:87:d2:e0   41820600 13164061   0      2911     0      0

When encountering any number of Ierrs to understand the source of these errors. Additional commands are required to determine the source of these errors.

Perform the following command.

• Single Node:

  • sysctl -a dev.bge
    		

• Entire Cluster:

  • isi_for_array -s sysctl -a dev.bge
    		

Example Output: 
 

dev.bge.0.stats.FramesDroppedDueToFilters: 0
dev.bge.0.stats.DmaWriteQueueFull: 0
dev.bge.0.stats.DmaWriteHighPriQueueFull: 0
dev.bge.0.stats.NoMoreRxBDs: 0
dev.bge.0.stats.InputDiscards: 16726286
dev.bge.0.stats.InputErrors: 0
dev.bge.0.stats.RecvThresholdHit: 0
dev.bge.0.stats.rx.ifHCInOctets: 6405558376
dev.bge.0.stats.rx.Fragments: 0
dev.bge.0.stats.rx.UnicastPkts: 45888
dev.bge.0.stats.rx.MulticastPkts: 16941236  <<<< Notice how close this value is to InputDiscards
dev.bge.0.stats.rx.BroadcastPkts: 46878590
dev.bge.0.stats.rx.FCSErrors: 0
dev.bge.0.stats.rx.AlignmentErrors: 0
dev.bge.0.stats.rx.xonPauseFramesReceived: 0
dev.bge.0.stats.rx.xoffPauseFramesReceived: 0
dev.bge.0.stats.rx.ControlFramesReceived: 0
dev.bge.0.stats.rx.xoffStateEntered: 0
dev.bge.0.stats.rx.FramesTooLong: 0
dev.bge.0.stats.rx.Jabbers: 0
dev.bge.0.stats.rx.UndersizePkts: 0
dev.bge.0.stats.tx.ifHCOutOctets: 176286
dev.bge.0.stats.tx.Collisions: 0
dev.bge.0.stats.tx.XonSent: 0
dev.bge.0.stats.tx.XoffSent: 0
dev.bge.0.stats.tx.InternalMacTransmitErrors: 0
dev.bge.0.stats.tx.SingleCollisionFrames: 0
dev.bge.0.stats.tx.MultipleCollisionFrames: 0
dev.bge.0.stats.tx.DeferredTransmissions: 0
dev.bge.0.stats.tx.ExcessiveCollisions: 0
dev.bge.0.stats.tx.LateCollisions: 0
dev.bge.0.stats.tx.UnicastPkts: 2903
dev.bge.0.stats.tx.MulticastPkts: 0
dev.bge.0.stats.tx.BroadcastPkts: 8

In the 8.x code, the bge driver increments the InputDiscards for unwanted packets, such as multicast packets or spanning-tree packet.

In OneFs version up to 8.2, if the Ierrs counter and the InputDiscards counters are relatively close and there are no FCSErrors, AlignmentErrors, Jabbers, or InputErrors, then these Ierrs can be safely ignored. 

If there is a large difference between the Ierrs counter and the InputDiscards counters and there is an increasing count in the FCSErrors, AlignmentErrors, Jabbers, or InputErrors, then look to a physical issue on the received side of the connection.  

In Onefs 8.2, multicast packets do not increase the Inputdiscards counter.