Using Ethanalyzer - Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual
Cisco nexus 5000 series switch cli software configuration guide, nx-os 4.0(1a)n1 (ol-16597-01, january 2009)
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Chapter 50
Troubleshooting
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
Step 8
Reset the new password to ensure that is it is also the SNMP password.
switch# configure terminal
switch(config)# username admin password <new password>
switch(config)# exit
switch#
Save the configuration.
Step 9
switch# copy running-config startup-config
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.
To configure Ethanalyzer, use one or more of the following commands:
Command
switch# ethanalyzer local interface
interface
switch# ethanalyzer local interface
interface brief
switch# ethanalyzer local interface
interface limit-captured-frames
switch# ethanalyzer local interface
interface limit-frame-size
switch# ethanalyzer local interface
interface capture-filter
switch# ethanalyzer local interface
interface display-filter
switch# ethanalyzer local interface
interface write
switch# ethanalyzer local read file
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:
http://www.tcpdump.org/tcpdump_man.html
For information on the syntax of the display filter, see the following URL:
http://wiki.wireshark.org/DisplayFilters
OL-16597-01
Purpose
Captures packets sent or received by the supervisor and
provides detailed protocol information.
For all commands in this table, interface is
Note
inbound-hi (Inbound high-priority interface),
inbound-low (Inbound low-priority interface),
or mgmt (management interface).
Captures packets sent or received by the supervisor and
provides a summary of protocol information.
Limits the number of frames to capture.
Limits the length of the frame to capture.
Filters the types of packets to capture.
Filters the types of captured packets to display.
Saves the captured data to a file.
Opens a captured data file and analyzes it.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Using Ethanalyzer
50-3
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