Monitor the Reachability of ONTAP Network Ports

2026年8月22日 LOG admin

Source: NetApp ONTAP 9 Documentation

Reachability monitoring is built into ONTAP 9.8 and later. Use this monitoring to identify when the physical network topology does not match the ONTAP configuration. In some cases, ONTAP can repair port reachability. In other cases, additional steps are required.

Use these commands to verify, diagnose, and repair network misconfigurations that stem from the ONTAP configuration not matching either the physical cabling or the network switch configuration.

Procedure

1. View Port Reachability

network port reachability show

2. Use the Decision Tree and Table to Determine the Next Step

Reachability-status	Description / Action
ok	The port has layer 2 reachability to its assigned broadcast domain. If "ok" but there are "unexpected ports", consider merging one or more broadcast domains. If "ok" but there are "unreachable ports", consider splitting one or more broadcast domains. If no unexpected or unreachable ports, your configuration is correct.
Unexpected ports	The port has L2 reachability to its assigned broadcast domain, but also to at least one other broadcast domain. Examine physical connectivity and switch configuration; the broadcast domain may need to be merged.
Unreachable ports	A single broadcast domain has become partitioned into two different reachability sets — split the broadcast domain to synchronize ONTAP configuration with the physical topology (after verifying physical and switch configuration is accurate).
misconfigured-reachability	The port does not have L2 reachability to its assigned broadcast domain, but does have reachability to a different broadcast domain. Repair with: `network port reachability repair -node <node> -port <port>`
no-reachability	The port does not have L2 reachability to any existing broadcast domain. Repair with: `network port reachability repair -node <node> -port <port>` — the port is assigned to a new automatically created broadcast domain in the Default IPspace.
unknown	Wait a few minutes and try the command again.

3. After Repairing a Port

Check for and resolve displaced LIFs and VLANs.
If the port was part of an interface group, understand what happened to that interface group.

Key Commands

network port reachability show
network port reachability repair -node <node> -port <port>

References: network port reachability show and network port reachability repair in the ONTAP command reference.

原文链接：https://docs.netapp.com/us-en/ontap/networking/monitor_the_reachability_of_network_ports.html

作者：admin

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