Lots of rx_errors on e100 based NICs after upgrade from RHEL-5 to RHEL-6
Issue
Applications running on RHEL6 after upgrade from RHEL 5 are suddenly experiencing network troubles.
# yum install -y sos
Loaded plugins: product-id
http://servidor/XXX/XXX/repos/aprot/repodata/b319e85da3965a7910d578de824f86d417569a19edeafb7def5de52613575526-primary.sqlite.bz2: [Errno 12] Timeout on http://servidor/XXX/repos/aprot/repodata/b319e85da3965a7910d578de824f86d417569a19edeafb7def5de52613575526-primary.sqlite.bz2: (28, 'Operation too slow. Less than 1 bytes/sec transfered the last 30 seconds')
ethtool shows lots of rx_errors.
# ethtool -S eth0
NIC statistics:
rx_packets: 67126
tx_packets: 19040
rx_bytes: 13444434
tx_bytes: 6962901
**rx_errors: 7021**
tx_errors: 0
rx_dropped: 0
tx_dropped: 0
multicast: 0
collisions: 0
rx_length_errors: 469
rx_over_errors: 0
rx_crc_errors: 5878
rx_frame_errors: 674
rx_fifo_errors: 0
rx_missed_errors: 0
tx_aborted_errors: 0
tx_carrier_errors: 0
tx_fifo_errors: 0
tx_heartbeat_errors: 0
tx_window_errors: 0
tx_deferred: 0
tx_single_collisions: 0
tx_multi_collisions: 0
tx_flow_control_pause: 0
rx_flow_control_pause: 0
rx_flow_control_unsupported: 0
tx_tco_packets: 0
rx_tco_packets: 0
Environment
- RHEL 6.4 and older
- e100: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM)
- Unshielded Ethernet cable longer than 100m
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