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MetroCluster IP中的丢弃是否存在问题?

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适用场景

  • MetroCluster IP
  • 丢弃的数据包位于:
    • MetroCluster IP接口(ifstat -a)
    • IP交换机端口

问题解答

  • 丢弃是指接收端丢弃的数据包、例如MetroCluster IP端口或IP交换机ISL
  • 丢弃的总帧数不到0.01%、这一点不值得关注
  • 可能的原因是、节点无法足够快地处理数据、因此不得不释放缓冲区
     

ifstat -a例:

-- interface  e0a  (5 days, 22 hours, 5 minutes, 38 seconds) --

RECEIVE
 Total frames:      281m | Frames/second:     550  | Total bytes:       523g
 Bytes/second:     1023k | Total errors:        0  | Errors/minute:       0
 Total discards:    397  | Discards/minute:     0  | Multi/broadcast:   201k
 Non-primary u/c:     0  | CRC errors:          0  | Runt frames:         0
 Fragment:            0  | Long frames:         0  | Jabber:              0
 Length errors:       0  | No buffer:           0  | Xon:                 0
 Xoff:                0  | Pause:               0  | Jumbo:           59896k
 Noproto:             0  | Error symbol:        0  | Illegal symbol:      0
 Bus overruns:        0  | Queue drops:       397  | LRO segments:      153m
 LRO bytes:         510g | LRO6 segments:       0  | LRO6 bytes:          0
 Bad UDP cksum:       0  | Bad UDP6 cksum:      0  | Bad TCP cksum:       0
 Bad TCP6 cksum:      0  | Mcast v6 solicit:    0  | Lagg errors:         0
 Lacp errors:         0  | Lacp PDU errors:     0

show interface counters例:

(IP_Switch_A_1)#show interface counters

Port        InOctets    InUcastPkts    InMcastPkts    InBcastPkts    InDropPkts     Rx Error
--------- ---------------- ---------------- ---------------- ---------------- ---------------- ----------------
...
0/9       549513604412     273572881       22211       16211         6        0
0/10      628951591621     303989361       22205       15478         1        0
...
0/13      189815444917      64098423       326062         0      103883        0
0/14      244671882280      60326655       103750        967      103834        0
0/15      330534040767     126059963       103749        849      104613        0
0/16      284351836716      70305010       103749         0      103793        0
0/55        190457301       40571       547474       48752       5987        0
0/56        256473241       102376       103751        1346       5032        0

 

如果丢弃量高于0.01%:

Please contact NetApp Technical Support or log into the NetApp Support Site to create a case. Reference this article for further assistance.

追加信息

  • ISL中的延迟和数据包丢失限制
  • 丢弃的数据包不应与数据包丢失相混淆
  • "数据包丢失"表示数据包从未到达目标接口。
  • 丢弃表示数据包已到达目标并被丢弃

 

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