我发现 (RHEL) 节点存在网络问题(数据包丢失),这似乎也通过 ifconfig 输出中的“错误”和“帧”字段的非零计数表现出来:
eth2 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
...
RX packets:277593775 errors:1049 dropped:0 overruns:0 frame:536
是否有某处详细描述“错误”和“框架”的确切含义?
编辑:输出ethtool eth2
:
Settings for eth2:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: d
Current message level: 0x00000007 (7)
Link detected: yes
答案1
RX 错误意味着您的 NIC 正在从传输交换机端口接收格式错误的帧。
帧错误是指在接收帧时出现 CRC 错误。造成这种情况的根本原因可能是电缆损坏,或者机器或交换机上的接口损坏。尝试更换电缆,然后移至交换机上的另一个端口。
答案2
在 tigon (tg3) 驱动程序中,版本 v3.134b 之前的rxbds_empty
事件被记录为帧错误。
您可以通过以下方式检查:
ethtool -S {device}
例如:
[root@srv2-mgmt ~]# ethtool -S em1
NIC statistics:
rx_octets: 795609182
rx_fragments: 0
rx_ucast_packets: 4003807
rx_mcast_packets: 313481
rx_bcast_packets: 1906658
rx_fcs_errors: 0
rx_align_errors: 0
rx_xon_pause_rcvd: 0
rx_xoff_pause_rcvd: 0
rx_mac_ctrl_rcvd: 0
rx_xoff_entered: 0
rx_frame_too_long_errors: 0
rx_jabbers: 0
rx_undersize_packets: 0
rx_in_length_errors: 0
rx_out_length_errors: 0
rx_64_or_less_octet_packets: 0
rx_65_to_127_octet_packets: 0
rx_128_to_255_octet_packets: 0
rx_256_to_511_octet_packets: 0
rx_512_to_1023_octet_packets: 0
rx_1024_to_1522_octet_packets: 0
rx_1523_to_2047_octet_packets: 0
rx_2048_to_4095_octet_packets: 0
rx_4096_to_8191_octet_packets: 0
rx_8192_to_9022_octet_packets: 0
tx_octets: 1010597527
tx_collisions: 0
tx_xon_sent: 0
tx_xoff_sent: 0
tx_flow_control: 0
tx_mac_errors: 0
tx_single_collisions: 0
tx_mult_collisions: 0
tx_deferred: 0
tx_excessive_collisions: 0
tx_late_collisions: 0
tx_collide_2times: 0
tx_collide_3times: 0
tx_collide_4times: 0
tx_collide_5times: 0
tx_collide_6times: 0
tx_collide_7times: 0
tx_collide_8times: 0
tx_collide_9times: 0
tx_collide_10times: 0
tx_collide_11times: 0
tx_collide_12times: 0
tx_collide_13times: 0
tx_collide_14times: 0
tx_collide_15times: 0
tx_ucast_packets: 4116171
tx_mcast_packets: 145500
tx_bcast_packets: 1983
tx_carrier_sense_errors: 0
tx_discards: 0
tx_errors: 0
dma_writeq_full: 0
dma_write_prioq_full: 0
rxbds_empty: 0
rx_discards: 0
rx_errors: 0
rx_threshold_hit: 0
dma_readq_full: 0
dma_read_prioq_full: 0
tx_comp_queue_full: 0
ring_set_send_prod_index: 0
ring_status_update: 0
nic_irqs: 0
nic_avoided_irqs: 0
nic_tx_threshold_hit: 0
mbuf_lwm_thresh_hit: 0