"ctdpktloss" / クラスタ LIF から ping を送信してもパケット損失が続く

最後の更新
PDFとして保存

Views:: 14

Visibility:: Public

Votes:: 0

Category:: fas-systems

Specialty:: hw

Last Updated:

環境

AFF/FASシステム
ONTAP 9.X
Cisco クラスタネットワークスイッチ

問題

system health alert show コマンドで次のエラーが報告されます：

Node:NetApp1

Resource: Ethernet1/10

Severity: Major

Indication Time: Mon Apr 24

13:01:43 2023

Suppress: false

Acknowledge: false

Probable Cause: The percentage of inbound packet errors of switch

interface "int/Ethernet1/10"

is above the warning threshold.

Possible Effect: Communication between nodes in the cluster might be

degraded.

EMS では次のエラーが報告されます：

[?] Mon May 01 01:06:49 +0530 [NetApp-node1: cshmd: hm.alert.raised:alert]: Alert Id = ClusterIfInErrorsWarn_Alert , Alerting Resource = switch-01(XXXXXXXXXXX)/Ethernet1/10 raised by monitor ethernet-switch

[?] Mon May 01 01:06:49 +0530 [NetApp-node1: cshmd: hm.alert.raised:alert]: Alert Id = ClusterIfInErrorsWarn_Alert , Alerting Resource = switch-01(XXXXXXXXXXX)/Ethernet1/9 raised by monitor ethernet-switch

[?] Mon May 01 01:06:49 +0530 [NetApp-node1: cshmd: hm.alert.raised:alert]: Alert Id = ClusterIfOutErrorsWarn_Alert , Alerting Resource = switch-01(XXXXXXXXXXX)/Ethernet1/7 raised by monitor ethernet-switch

[?] Mon May 01 01:06:49 +0530 [NetApp-node1: cshmd: hm.alert.raised:alert]: Alert Id = ClusterIfOutErrorsWarn_Alert , Alerting Resource = switch-01(XXXXXXXXXXX)/Ethernet1/8 raised by monitor ethernet-switch

[?] Mon May 01 01:08:42 +0530 [NetApp-node1: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif xxx (node NetApp-node1) to cluster lif xyx (node NetApp-node3).

[?] Mon May 01 01:08:53 +0530 [NetApp-node1: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif xxy (node NetApp-node1) to cluster lif xyx (node NetApp-node3).

[NetApp-node1: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Large MTU Packet Loss - Ping failures detected between cluster lif xxy ( 169.xxx.xxx.xx8 ) on NetApp-node1 and cluster lif xyx ( 169.xxx.xxx.xx9 ) on NetApp-node2

スイッチポートの MTU は 1500 です（show interface の出力を参照）：

Switch-01# show interface <interface name>

Ethernet1/8 is up
 admin state is up, Dedicated Interface
 Hardware: 1000/10000/25000/40000/50000/100000 Ethernet, address: 806a.0023.eaf4 (bia 806a.0023.eaf4)
 MTU 1500 bytes, BW 40000000 Kbit , DLY 10 usec
 reliability 255/255, txload 1/255, rxload 1/255
 Encapsulation ARPA, medium is broadcast

ストレージ側では、MTU サイズは 9000 に設定されています。CLI からの net port show 出力で同じことを確認できます。