Cisco Nexus 5000 Series - Using Ethanalyzer

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 1 Troubleshooting
Using Ethanalyzer
Step 4 Reset the network administrator password.
switch(boot)# configure terminal
switch(boot-config)# admin-password <new password>
switch(boot-config)# exit
switch(boot)#
Step 5 Display the bootflash: contents to locate the Cisco NX-OS software image file.
switch(boot)# dir bootflash:
Step 6 Load the Cisco NX-OS system software image.
In the following example, the system image filename is nx-os.bin:
switch(boot) # load bootflash:nx-os.bin
Step 7 Log in to the switch using the new administrator password.
switch login: admin
Password: <new password>
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#
Step 9 Save the configuration.
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 the following commands:
Command Purpose
ethanalyzer local interface interface
Captures packets sent or received by the supervisor
and provides detailed protocol information.
For the following commands, interface is inbound-hi
(Inbound high priority interface), inbound-low
(Inbound low priority interface), or mgmt
(management interface).
ethanalyzer local interface interface
brief
Captures packets sent or received by the supervisor
and provides a summary of precool information.
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.