从集群 LIF ping 集群时，数据包继续丢失 LIF

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适用场景

ONTAP 9
Cisco Nexus集群交换机

问题描述

从一个节点的集群lf Ping到另一节点的集群lf时、Ping数据包被丢弃、并且事件日志中显示以下警报：

[Node1: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif Node1_clus2 (node Node1) to cluster lif Node2_clus2 (node Node2)

[Node3: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif Node3_clus1 (node Node3) to cluster lif Node4_clus2 (node Node4)

因此、集群网络降级、并报告以下事件：

[Node1: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Large MTU Packet Loss - Ping failures detected between Node1_clus1 ( 169.254.XXX.XXX ) on Node1 and Node2_clus1 ( 169.254.XXX.XX ) on Node2

节点上的所有集群端口均配置了9000 MTU：

Cluster::> network port show

Node: Node1 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- e0a Cluster Cluster up 9000 auto/10000 healthy e0b Cluster Cluster up 9000 auto/10000 healthy

Node: node2 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- e0a Cluster Cluster up 9000 auto/10000 healthy e0b Cluster Cluster up 9000 auto/10000 healthy