Commands for diagnosing network problems

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You can diagnose problems on your network by using commands such as ping, traceroute, ndp, and tcpdump. You can also use commands such as ping6 and traceroute6 to diagnose IPv6 problems.

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Test whether the node can reach other hosts on your network

network ping

Test whether the node can reach other hosts on your IPv6 network

network ping6

Trace the route that the IPv4 packets take to a network node

network traceroute

Trace the route that the IPv6 packets take to a network node

network traceroute6

Manage the Neighbor Discovery Protocol (NDP)

network ndp

Display statistics about packets that are received and sent on a specified network interface or on all network interfaces

run -node node_name ifstat
Note: This command is available from the nodeshell.

Display information about neighboring devices that are discovered from each node and port in the cluster, including the remote device type and device platform

network device-discovery show

View the CDP neighbors of the node (ONTAP supports only CDPv1 advertisements)

run -node node_name cdpd show-neighbors
Note: This command is available from the nodeshell.

Trace the packets that are sent and received in the network

network tcpdump start -node node-name - port port_name
Note: This command is available from the nodeshell.

Measure latency and throughput between intercluster or intracluster nodes

network test-path -source-node source_nodename

local -destination- cluster destination_clustername - destination-node destination_nodename - session-type Default

AsyncMirrorLocal

AsyncMirrorRemote

SyncMirrorRemote

For more information about these commands, see the appropriate man pages.

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