How to capture packet traces on a Clustered Data ONTAP storage system

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caroline
Published
https://kb.netapp.com/support/index?page=content&id=1011204 A packet trace is a capture of what is being transmitted to the network card. The pktt command controls a simple on-controller packet tracing facility. Packets can be captured into a trace buffer, then dumped to a file, or the captured data can be logged to a file. The data is stored in a 'tcpdump' format, and can be directly viewed with tcpdump, ethereal, and perhaps other viewers. The output can also be converted using the editcap program to a variety of other formats, including Sniffer, NetMon, and snoop.

It is helpful to have pktt available because it can capture traffic from switched networks, and from all supported controller network media types.

In addition, it is often useful to turn on pktt tracing before a controller crashes, as the packet trace can be extracted from the core file.

In this video, we'll look at how this data can be captured from a Clustered ONTAP system.


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Category
Network Storage
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