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HP 5500 Ei 5500 Si Switch Series Configuration Guide

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Directory of flash:/ 
   0     -rw-  13308645  Mar 22 2011 11:34:07   main.bin 
   1     -rw-      7380  Mar 25 2011 10:47:36   patch-package.bin 
   2     -rw-       228  Mar 25 2011 10:50:39   patchstate 
   3     -rw-      3921  Apr 01 2011 17:56:30   startup.cfg 
   4     -rw-       151  Apr 01 2011 17:56:24   system.xml 
15240 KB total (2521 KB free) 
# Create new folder mytest in the test directory. 
 cd test 
 mkdir mytest 
%Created dir flash:/test/mytest. 
# Display the current working directory. 
 pwd 
flash:/test 
# Display the files and the subdirectories in the test directory. 
 dir 
Directory of flash:/test/ 
   0   drw-         -  Apr 01 2011 18:28:14   mytest 
15240 KB total (2519 KB free) 
# Return to the upper directory. 
 cd .. 
# Display the current working directory. 
 pwd 
flash:
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    							 90 
Managing configuration files 
You can manage configuration files at the CLI or by using the Boot menu of the device. This chapter 
describes the CLI approach. 
Overview 
A configuration file saves a configuration as a set of text commands. You can save the running 
configuration to a configuration file so the configuration takes effect after you reboot the device. You can 
also back up the configuration file to a host and download the file to the device as needed. 
Configuration types 
The device maintains the following types of configurations: factory defaults, startup configuration, and 
running configuration. 
Factory defaults 
The device is shipped with some basic settings called  factory defaults. These default settings make sure 
the device can start up and run normally when it has  no configuration file or the configuration file is 
corrupted. 
To view the factory defaults, use the  display default-configuration command.  
 
 NOTE: 
Factory defaults vary with devi ce models and might differ from th e default settings of commands. 
 
Startup configuration 
The device uses startup configuration to configure software features during startup. After the device starts 
up, you can specify a different configuration file for the next startup. This configuration file is called the 
next-startup configuration file.  
If no next-startup configuration file exists, the device boots with the factory defaults.  
To view the current startup configuration, use either of the following ways: 
•  Execute the display startup  command. To view detailed file contents, use the  more command. 
•   After the device reboots, execute the  display current-configuration command before making any 
configuration. 
Running configuration 
The running configuration includes the startup settings  that have not been changed and the new settings 
you have made. 
The running configuration is stored in a volatile  storage medium. To make the settings you made to 
survive a reboot, save them to the startup configuration file.  
To view the running configuration, use the  display current-configuration command.
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    							 91 
Configuration file format and content 
A configuration file is saved as a text file according to the following rules: 
•  Commands are saved in their complete form. 
•   The commands are listed in sections by view, typically in this order: system view, interface view, 
protocol views, and user interface view. 
•   Sections are separated with one or more blank lines or comment lines that start with a pound sign 
(#). 
•   A configuration file ends with a return. 
Coexistence of multiple configuration files 
The device can save multiple configuration files on its storage media. You can save the configurations 
used for different networking environments to different configuration files. When the device moves 
between networking environments, you can quickly adapt the device to the environments by loading the 
intended configuration file onto the device. 
You can specify one main startup configuration file and one backup startup configuration file for the 
device. At startup, the device first tries to start up with the main startup configuration file. If the main 
startup configuration file is corrupted or lost, the device tries to start up with the backup startup 
configuration file. For reliability, do not specify a configuration file as both the main and backup startup 
configuration files. If a configuration file is not assign ed the main or backup attribute, its file attribute is 
NULL. 
You can specify a main or backup startup configuration file directly (see  Specifying a configuration file) 
or w

hen saving the running configuration (see  Saving the running configuration)
 . 
Startup with a configuration file 
The device selects the configuration file to load at startup, as follows: 
1. If the specified main startup configuration file exists , the device starts up with this configuration file. 
2. If the specified main startup configuration file  does not exist but the backup startup configuration 
file exists, the device st arts up with the backup startup configuration file. 
3. If neither the main nor the backup startup configurat ion file exists, the device starts up with the 
factory defaults. 
Saving the running configuration 
To make configuration changes take effect at the next startup of the device, save the running 
configuration to the startup configuration file to be  used at the next startup before the device reboots. 
Complete these tasks to save the current configuration: 
 
Task Remarks 
Enabling configuration file auto-update  Optional 
Perform this task to ensure configuration 
consistency across member devices. 
Saving running configuration in fast mode or safe
 mode Required
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Enabling configuration file auto-update 
The configuration auto-update function enables all subordinate switches to automatically save the 
running configuration as the master does when you execute the  save [ safely  ] [ backup | main ] 
[  force ] command or the  save filename  all command. If this function is disabled, only the master 
saves the configuration.  
To ensure configuration consistency, HP recommends enabling the function. 
To enable configuration auto-update: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enable configuration file 
auto-update.  slave auto-update config  By default, this function is 
enabled. 
 
Saving running configuration in fast mode or safe mode 
You can save the running configuration to a configuration file in one of the following modes: 
•
  Fast mode —Use the  save command without the  safely keyword. The file is saved more quickly but 
is likely to be lost if the device reboots or powe r failure occurs during the process. If the startup 
configuration file for the next startup is lost, the device will use the factory defaults the next time it 
reboots, and you must re-specify a new startup configuration file for the device (see  Specifying a 
conf

iguration file for the next startup). 
•   Safe mode —Use the save command with the  safely keyword. The file is saved slowly, but the system 
retains the configuration file even if the device reboots or a power failure occurs during the process. 
The fast saving mode is suitable for environments where a reliable power source is used. The safe mode  
is preferred in environments where the power source  is not reliable or remote maintenance is involved. 
The configuration file name extension must be  .cfg. 
To save the running configuration, perform either of the following tasks in any view: 
 
Task Command Remarks 
Save the running configuration to a 
configuration file without 
specifying the file as the startup 
configuration file for the next 
startup.  save 
file-url  [ all  | slot  slot-number  ]
 
The save  command executed with 
only the file-url  argument saves the 
running configuration only to the 
specified path, regardless of 
whether the configuration 
auto-update function has been 
enabled.
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Task Command Remarks 
Save the running configuration to a 
configuration file and specify the 
file as the startup configuration file 
for the next startup. save [ safely
 ] [ backup | main ] 
[ force  ]  By default, the running 
configuration is saved to the 
current startup configuration file. 
You can choose to save the 
configuration to a different file as 
instructed by the system.  
If you execute the 
save [ safely ] 
command without specifying any 
other keyword, the command 
saves the configuration to the main 
startup configuration file.  
 
If configuration auto-update is enabled, the  save file -url  all command and the  save [ safely  ] [ backup | 
main ] [ force  ] command save the configuration to the master device and all member devices. If the 
function is disabled, the commands save the configuration only to the master device. 
Configuring configuration rollback 
To replace the running configuration with the configuration in a configuration file without rebooting the 
device, use the configuration rollback function. This function helps you revert to a previous configuration 
state or adapt the running configuratio n to different network environments. 
The configuration rollback function compares the running configuration against the specified 
replacement configuration file and handles configuration differences as follows:  
•   If a command in the running configuration is not in the replacement file, executes its  undo form. 
•   If a command in the replacement file is not in the running configuration, adds it to the running 
configuration. 
•   If a command has different settings in the running configuration and the configuration file, replaces 
its running configuration with the setting in the configuration file.  
To facilitate configuration rollback, the configuration  archive function is developed. This function enables 
the system to automatically save the running configurat ion at regular intervals as checkpoint references.  
Configuration task list  
Task Remarks 
Configuring configuration archive parameters  Required. 
• Enabling automatic configuration archiving 
• Manually archiving running configuration   Required. 
Use either approach. 
Performing configuration rollback
 Required.  
 
Configuring configuration archive parameters 
Before archiving the running configuration, either manually or automatically, you must configure a file 
directory and file name prefix for configuration archives.
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Configuration archives are saved with the file name format  prefix_serial number .cfg, for example, 
20080620archive_1.cfg  and 20080620archive_2.cfg. The serial number is automatically assigned from 
1 to 1000, increasing by 1. After the serial number reaches 1000, it restarts from 1.  
After you change the file directory or file name prefix , or reboot the device, the old configuration archives 
are regarded as common configuration files, the configuration archive counter resets, and the  display 
archive configuration  command does not display them. The serial number for new configuration archives 
starts from 1. 
After the maximum number of configuration archives is reached, the system deletes the oldest archive for 
the new archive. 
Configuration guidelines 
In an IRF fabric, the configuration archive function saves running configuration only on the master device. 
To make sure the system can archive running configuration after a master/subordinate switchover, create 
the directory on all IRF members. 
Configuration procedure 
To configure configuration archive parameters:  
Step Command Remarks 
1.   Create the configuration 
archive directory.   See Managing the file system.
 In an IRF fabric, create the 
directory at least on the master.  
HP recommends creating the 
directory on all member devices. 
 
2.
  Enter system view. 
system-view  N/A 
3.  Configure the directory and 
file name prefix for archiving 
the running configuration.  archive configuration location
 
directory  filename-prefix 
filename-prefix   Do not include member ID 
information in the directory 
name.  
By default, no path or file name 
prefix is set for configuration 
archives, and the system does 
not regularly save configuration.
 
 IMPORTANT: 
The  undo  form of this command 
disables both manual and 
automatic configuration 
archiving, restores the default 
settings for the  archive 
configuration interval  and 
archive configuration max  
commands, and deletes all 
saved configuration archives. 
4.   Set the maximum number of 
configuration archives.  archive configuration max file-number 
Optional. 
The default number is 10. 
Change the setting depending 
on the available storage space.
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Enabling automatic configuration archiving 
To avoid decreasing system performance, follow these guidelines when you configure automatic 
configuration archiving:  
•   If the device configuration does not change freq uently, manually archive the running configuration 
as needed. 
•   If a low-speed storage media (such as a Flash) is  used, archive the running configuration manually, 
or configure automatic archiving with an inte rval longer than 1440 minutes (24 hours).  
Make sure you have set an archive path and file name prefix before performing this task. 
To enable automatic configuration archiving: 
 
Step Command Remarks 
1.   Enter system view.  system-view  N/A 
2.  Enable automatic 
configuration archiving and 
set the archiving interval.  archive configuration interval 
minutes By default, this function is 
disabled.  
To view configuration archive 
names and their archiving time, 
use the 
display archive 
configuration  command. 
 
Manually archiving running configuration 
To save system resources, disable automatic configuration archiving and manually archive configuration 
if the configuration will not be changed very often. You can also manually archive configuration before 
performing complicated configuration tasks so you can use the archive for configuration recovery after 
the configuration attempt fails.  
Make sure you have set an archive path and file name prefix before performing this task.  
Perform the following task in user view: 
 
Task Command 
Manually archive the running configuration.  archive configuration 
 
Performing configuration rollback 
To avoid rollback failure, follow these guidelines: 
•  Do not reboot member devices while the system is executing the  configuration replace file 
command. Make sure the replacement configuratio n file is created by using the configuration 
archive function or the  save command on the current device.  
•   If the configuration file is not created on the current device, make sure the configuration file content 
format is fully compatible with the current device.  
•   The replacement configuration file is not encrypted.  
To perform configuration rollback:
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Step Command 
1.  Enter system view.  system-view 
2.  Perform configuration rollback. 
configuration replace file filename  
 
The configuration rollback function might fail to reco nfigure some commands in the running configuration 
for one of the following reasons:  
•   A command cannot be undone because the  undo form designed for the command does not include 
a keyword or argument configured in the command. For example, if the  undo form designed for the 
A  [B ] C  command is undo A C , the configuration rollback function cannot undo the  A B  C  command, 
because the system does not recognize the  undo A B C command. 
•   A command (for example, a hardware-dependent command) cannot be deleted, overwritten, or 
undone due to system restrictions. 
•   The commands in different views are dependent on each other. 
•   Commands or command settings not supported on  the current device cannot be added to the 
running configuration. 
Specifying a configuration file for the next startup 
You can specify a configuration file as the main startup configuration file to be used at the next startup 
when you use the  save command to save the running configuration to it. 
Alternatively, perform the following task in user view to specify a startup configuration file for the next 
startup: 
 
Task Command Remarks 
Specify a startup configuration file 
of all member switches.  startup
 saved-configuration  cfgfile 
[ backup  | main ]  The configuration file must use 
the 
.cfg extension and be saved in 
the root directory of storage 
media. 
 
Backing up the next-startup configuration file to a 
TFTP server 
Before performing this task, make sure the server is reachable and enabled with TFTP service, and you 
have read and write permissions. 
This task backs up only the main next-startup configuration file.  
To back up the startup configuration file to be used at the next startup: 
 
Step Command Remarks 
1.   Ve ri f y  t h a t  a  n ex t - s ta r t u p  
configuration file has been 
specified in user view.  display startup  Optional.  
If no next-startup configuration file 
has been specified, the back 
operation will fail.
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Step Command Remarks 
2.  Back up the next-startup 
configuration file to a TFTP 
server in user view.  backup startup-configuration to
 
dest-addr  [dest-filename  ]  N/A 
 
Deleting the next-startup configuration file 
 
 
CAUTION: 
This task permanently deletes the next-startup conf
iguration file from all member devices. Before 
performing this task, back up the file as needed. 
 
You can delete the main, the backup, or both. If the device has only one next-startup configuration file, 
the system sets the attribute of the configuration file to NULL instead of deleting the file.  
You may need to delete the next-startup configuration file for one of the following reasons: 
•   After you upgrade system software, the file does not match the new system software. 
•   The file has been corrupted or is not fully compatible with the device. 
After the file is deleted, the device uses factory defaults at the next startup. 
Perform the following task in user view: 
 
Task Command 
Delete the next-startup 
configuration file.  reset saved-configuration 
[ backup | main  ] 
 
Restoring the next-startup configuration file from a 
TFTP server 
To download a configuration file from a TFTP server  to the root directory of each member storage 
medium, and specify the file as the configuration file for  the next startup, perform the task in this section.   
This task restores only the main next-startup configuration file. 
Before restoring the next-startup configuration file, make sure the server is reachable, the server is 
enabled with TFTP service, and you have read and write permissions. 
To restore the next-startup configuration file from a TFTP server:  
 
Step Command Remarks 
1.   Restore the main next-startup 
configuration file from a TFTP 
server in user view.  restore startup-configuration 
from
 src-addr src-filename  N/A 
2.
  Verify that the specified 
configuration file has been set 
as the main next-startup 
configuration file.   display startup 
Optional
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Displaying and maintaining a configuration file 
 
Task Command Remarks 
Display information about 
configuration rollback. display archive configuration [ |
 
{  begin |  exclude | include  } 
regular-expression  ]   Available in any view. 
Display the running configuration.  display current-configuration 
[ [ configuration [ configuration
 ] | 
interface  [ interface-type  ] 
[ interface-number  ] | exclude 
modules  ] [ by-linenum  ] [ | { begin  
|  exclude  | include  } 
regular-expression  ] ]  Available in any view. 
Display the factory defaults. 
display default-configuration
 [ | 
{  begin |  exclude  | include  } 
regular-expression  ]  Available in any view. 
Display the running configuration 
file saved on the storage media of 
the device.  display saved
-configuration 
[  by-linenum  ] [ | { begin | exclude  
|  include  } regular-expression  ] Available in any view. 
Display the configuration files used 
at this startup and the next startup.  display startup
 [ | { begin | 
exclude  | include  } 
regular-expression  ]  Available in any view. 
Display the valid configuration 
under the current view.  display this 
[ by-linenum ] [ | 
{  begin |  exclude  | include  } 
regular-expression  ]  Available in any view.
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