I'm trying to troubleshoot a problem with lost network traffic within a
cluster. The hardware is HP DL380 with BCM5708 NICs. The only abnormality
I've spotted is a high number in the ex_filtered_packets statistic. I
haven't been able to find out what that means. All I see in the driver is
that it seems to be an alias for stat_IfInFramesL2FilterDiscards in the
statistics block from the NIC firmware or hardware.
Can anyone tell me what this L2 filter is and when/why it discards frames?
Thanks
[root@vmnode1 ~]# ethtool -S eth1
NIC statistics:
rx_bytes: 37184776006
rx_error_bytes: 0
tx_bytes: 36326252087
tx_error_bytes: 0
rx_ucast_packets: 149807070
rx_mcast_packets: 583042
rx_bcast_packets: 614856
tx_ucast_packets: 147809586
tx_mcast_packets: 1996035
tx_bcast_packets: 295994
tx_mac_errors: 0
tx_carrier_errors: 0
rx_crc_errors: 0
rx_align_errors: 0
tx_single_collisions: 0
tx_multi_collisions: 0
tx_deferred: 0
tx_excess_collisions: 0
tx_late_collisions: 0
tx_total_collisions: 0
rx_fragments: 0
rx_jabbers: 0
rx_undersize_packets: 0
rx_oversize_packets: 0
rx_64_byte_packets: 1493821
rx_65_to_127_byte_packets: 34552503
rx_128_to_255_byte_packets: 104147944
rx_256_to_511_byte_packets: 1338752
rx_512_to_1023_byte_packets: 2071692
rx_1024_to_1522_byte_packets: 7400256
rx_1523_to_9022_byte_packets: 0
tx_64_byte_packets: 339545
tx_65_to_127_byte_packets: 35792279
tx_128_to_255_byte_packets: 104353546
tx_256_to_511_byte_packets: 682789
tx_512_to_1023_byte_packets: 1319425
tx_1024_to_1522_byte_packets: 7614031
tx_1523_to_9022_byte_packets: 0
rx_xon_frames: 0
rx_xoff_frames: 0
tx_xon_frames: 0
tx_xoff_frames: 0
rx_mac_ctrl_frames: 0
rx_filtered_packets: 1172921
rx_discards: 0
rx_fw_discards: 0
[root@vmnode1 ~]#
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