vifmgr.cluscheck.crcerrors警报和ifstat由于MTU不匹配而接收较长的帧

适用场景

• ONTAP 9
• 网络
  • 最大传输单元 (MTU)

问题描述

• ifstat 显示端口正在接收长帧

::>system node run -node Node1 -command ifstat e1d
-- interface  e1d  (5 days, 13 hours, 44 minutes, 30 seconds) --
RECEIVE
 Total frames:    438k | Frames/second:     1  | Total bytes:    32232k
 Bytes/second:     67  | Total errors:   32047 | Errors/minute:     4 
 Total discards:    0  | Discards/minute:    0  | Multi/broadcast:   561k
 Non-primary u/c:    0  | CRC errors:      0  | Runt frames:      0 
 Long frames:    32047 | Length errors:     0  | Alignment errors:   0 
 No buffer:       0  | Pause:         0  | Jumbo:         0 
 Noproto:        0  | Bus overruns:     0  | LRO segments:     0 
 ...

• 根据ONTAP版本、EMS会重复记录以下事件之一
  • [Node1: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e1d on node Node1 is reporting a high number of observed CRC errors.
  • [Node1: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e1d on node Node1 is reporting a high number of observed hardware errors, possibly CRC errors.
  • [Node1: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e1d on node Node1 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).
• 交换机端口正在发送长帧

switch# show interface eth0/10
Ethernet0/10 is up
  RX
   0 jumbo packets  0 storm suppression bytes
 TX
  32047 jumbo packets

• MTU设置为小于巨型帧大小

::> net port show -fields mtu,broadcast-domain  -node Node1 -port e1d
  (network port show)
node      port mtu broadcast-domain
------------ ---- ---- ----------------
Node1     e1d  1500 Default