C H A P T E R
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Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
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Ethanalyzer
This chapter describes how to use Ethanalyzer as a Cisco NX-OS protocol analyzer tool and includes the
following section:
•
Using Ethanalyzer
Ethanalyzer is a Cisco NX-OS protocol analyzer tool based on the Wireshark (formerly Ethereal) open
source code. Ethanalyzer is a command-line version of Wireshark that captures and decodes packets.
You can use Ethanalyzer to troubleshoot your network and analyze the control-plane traffic.
Ethanalyzer does not capture data traffic that Cisco NX-OS forwards in the hardware. Ethanalyzer uses
the same capture filter syntax as tcpdump. For more information, see the following URL:
Command
Purpose
ethanalyzer local interface
interface
Captures packets sent or received by the
supervisor and provides detailed protocol
information.
Note
For all commands in this table, you can
use the control, ha-primary, ha-secondary,
inband/outband interface (packet
interface) or management interface.
ethanalyzer local interface
interface
limit-captured-frames
Limits the number of frames to capture.
ethanalyzer local interface
interface
limit-frame-size
Limits the length of the frame to capture.
ethanalyzer local interface
interface
capture-filter
Filters the types of packets to capture.
ethanalyzer local interface
interface
display-filter
Filters the types of captured packets to display.
ethanalyzer local interface
interface
write
Saves the captured data to a file.
ethanalyzer local read file
Opens a captured data file and analyzes it.