Viewing switch configuration and operation
In some troubleshooting scenarios, you may need to view the switch configuration to diagnose a problem. The complete switch configuration is contained in a file that you can browse from the CLI using the commands described in this section.
Viewing the configuration file (WebAgent)
To display the running configuration using the WebAgent:
In the navigation pane, click Troubleshooting.
Click Configuration Report.
Use the right-side scroll bar to scroll through the configuration listing.
Viewing a summary of switch operational data
Syntax:
By default, the
show techcommand displays a single output of switch operating and running-configuration data from several internal switch sources, including:
Image stamp (software version data)
Running configuration
Event Log listing
Boot history
Port settings
Status and counters — port status
IP routes
Status and counters — VLAN information
GVRP support
Load balancing (trunk and LACP)
The show tech command shows sample output from the
show techcommand.The show tech command
HP Switch# show tech show system Status and Counters - General System Information System Name : Switch System Contact : System Location : MAC Age Time (sec) : 300 Time Zone : 0 Daylight Time Rule : None Software revision : XX.14.xx Base MAC Addr : 001871-c42f00 ROM Version : XX.12.12 Serial Number : SG641SU00L Up Time : 23 hours Memory - Total : CPU Util (%) : 10 Free : IP Mgmt - Pkts Rx : 759 Packet - Total : 6750 Pkts Tx : 2 Buffers Free : 5086 Lowest : 4961 Missed : 0 show flash Image Size(Bytes) Date Version ----- ----------- ------ --------To specify the data displayed by the
show techcommand, use thecopy show techcommand as described in .
Saving show tech command output to a text file
When you enter the show tech command,
a summary of switch operational data is sent to your terminal emulator.
You can use your terminal emulator's text capture features to save
the show tech data to a text file for viewing,
printing, or sending to an associate to diagnose a problem.
For example, if your terminal emulator is the
Hyperterminal application available with Microsoft® Windows® software,
you can copy the show tech output to a file and
then use either Microsoft Word or Notepad to display the data. (In
this case, Microsoft Word provides the data in an easier-to-read format.)
The following Example: uses the Microsoft Windows terminal emulator. If you are using a different terminal emulator application, see the documentation provided with the application.
In Hyperterminal, click on
Transfer|Capture Text…(see Capture text window of the Hyperterminal application).In the
Filefield, enter the path and file name in which you want to store theshow techoutput, as shown in Entering a path and filename for saving show tech output.Click [Start] to create and open the text file.
From the global configuration context, enter the
show techcommand:The
show techcommand output is copied into the text file and displayed on the terminal emulator screen. When the command output stops and displays-- MORE --, press the Space bar to display and copy more information. The CLI prompt appears when the command output finishes.Click on
Transfer|Capture Text|Stopin HyperTerminal to stop copying data and save the text file.If you do not stop HyperTerminal from copying command output into the text file, additional unwanted data can be copied from the HyperTerminal screen.
To access the file, open it in Microsoft Word, Notepad, or a similar text editor.
Viewing more information on switch operation
Use the following commands to display additional information on switch operation for troubleshooting purposes.
Syntax:
Displays the crash information saved for each management module on the switch.
show history
Displays the current command history. This command output is used for reference or when you want to repeat a command (See Displaying the information you need to diagnose problems).
show system-information
Displays globally configured parameters and information on switch operation.
show version
Displays the software version currently running on the switch and the flash image from which the switch booted (primary or secondary). For more information, see "Displaying Management Information" in the "Redundancy (Switch 8212zl)" .
show interfaces
Displays information on the activity on all switch ports (see "Viewing Port Status and Configuring Port Parameters" in the "Port Status and Configuration" ).
show interfaces-display
Displays the same information as the
show interfacescommand and dynamically updates the output every three seconds. Press Ctrl + C to stop the dynamic updates of system information. Use the Arrow keys to view information that is off the screen.
Searching for text using pattern matching with show command
Selected portions of the output are displayed, depending on the parameters chosen.
Syntax:
Uses matching pattern searches to display selected portions of the output from a
showcommand. There is no limit to the number of characters that can be matched. Only regular expressions are permitted; symbols such as the asterisk cannot be substituted to perform more general matching.
includeOnly the lines that contain the matching pattern are displayed in the output.
excludeOnly the lines that contain the matching pattern are not displayed in the output.
beginThe display of the output begins with the line that contains the matching pattern.
NOTE: Pattern matching is case-sensitive.
![[NOTE: ]](images/note.gif)
Below are examples of what portions of the running config file display depending on the option chosen.
Pattern matching with include option
HP Switch(config)# show run | include ipv6 ipv6 enable ipv6 enable ipv6 access-list "EH-01" HP Switch(config)#
Pattern matching with exclude option
HP Switch(config)# show run | exclude ipv6
Pattern matching with begin option
HP Switch(config)# show run | begin ipv6
The show arp command and pattern matching with the include
option is an Example: of the show arp command
output, and then the output displayed when the include option
has the IP address of 15.255.128.1 as the regular
expression.
The show arp command and pattern matching with the include option
HP Switch(config)# show arp IP ARP table IP Address MAC Address Type Port ------------- -------------- ------- ---- 15.255.128.1 00000c-07ac00 dynamic B1 15.255.131.19 00a0c9-b1503d dynamic 15.255.133.150 000bcd-3cbeec dynamic B1 HP Switch(config)# show arp | include 15.255.128.1 15.255.128.1 00000c-07ac00 dynamic B1
Displaying the information you need to diagnose problems
Use the following commands in a troubleshooting session to more accurately display the information you need to diagnose a problem.
Syntax:
Creates a shortcut alias name for commonly used commands and command options.
Syntax:
Terminates a currently running, remote troubleshooting session. Use the
show ip ssh commandto list the current management sessions.
Syntax:
Toggles the paging mode for
showcommands between continuous listing and per-page listing.
Syntax:
Repeatedly executes one or more commands so that you can see the results of multiple commands displayed over a period of time. To halt the command execution, press any key on the keyboard.
Syntax:
Displays the Switch Setup screen from the menu interface.