display configuration changes

Function

The display configuration changes command displays the difference between a configuration file and the current running configuration file on the device.

The display configuration commit changes command displays configuration changes at specific configuration rollback points.

Format

display configuration commit changes [ { at commit-id | since commit-id | last number-of-commits } [ with-tag ] ]

display configuration changes [ { running file file-name | file file-name running } [ with-tag ] ]

display configuration changes { running label label | label label running } [ with-tag ]

Parameters

Parameter	Description	Value
at commit-id	Displays configuration changes at a configuration rollback point.	The id is a string of 1 to 20 characters and generated by the system automatically.
since commit-id	Displays configuration changes since the specified configuration rollback point was generated.	The id is a string of 1 to 20 characters and generated by the system automatically.
last number-of-commits	Specifies the number of the latest configuration rollback points. Configuration changes in these rollback points are displayed.	The value is an integer ranging from 1 to 80.
with-tag	Displays configuration changes that carry the <replace/> tag.	-
running	Displays the running configuration, that is, the configuration data in the running/ database.	-
file file-name	Specifies a configuration file.	The name is a string of 5 to 64 characters in the format of .zip, .cfg, or .dat.
label label	Specifies a label.	The value is an integer ranging from 1 to 256.

Views

All views

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
config	read

Usage Guidelines

Usage Scenario

If a misoperation is performed or some configurations fail, the system must roll back to a specified historical configuration. In this case, you can run the display configuration commit changes command to check configuration changes at configuration rollback points.
When the with-tag parameter is carried to query configuration changes, you can query the differential configuration information with the specified tag. The information is mainly used in a configuration difference replacement scenario, providing contents to be pasted for the load configuration terminal command.
To view the difference between the current running configuration file and a specified configuration file, run the display configuration changes running file file-name command.
To view the difference between a specified configuration file and the current running configuration file, run the display configuration changes file file-name running command.
The display configuration changes running label label command displays the difference between the current configuration and the configuration of a specified user label.
The display configuration changes label label running command displays the difference between the configuration of a specified user label and the current configuration.
This command can only compare the current running configuration file with a configuration file. When you run this command, the first specified configuration file is called source configuration, and the later specified configuration file is called target configuration. If the target configuration is different from the source configuration, the difference is displayed based on the following rules:
An added command is displayed in the format of prefix+.
A deleted command is displayed in the format of prefix-.
If a command is modified, the original command is displayed in the format of prefix-, and the new command is displayed in the format of prefix+.

Prerequisites

You have completed the system configuration, and configuration rollback points have been generated. You can run the display configuration commit list command to query generated configuration rollback points.

Follow-up Procedure

Choose to restore the configuration manually or to perform a configuration rollback by checking the configuration changes.

Precautions

When a configuration difference comparison command is run, if repeated commands exist in the same view, the current command fails to be executed.

The specified configuration file specified by file-name must exist on the device.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display the changes stored in configuration rollback point 1000000065.

<HUAWEI> display configuration commit changes at 1000000065
Building configuration
  #
  aaa
+  local-user huawei password cipher @%@%ym<*-4`Hu=kF;b-%AiAF&C:1@%@%
+  local-user huawei service-type ftp 
+  local-user huawei ftp-directory cfcard:/

# Display configuration changes since configuration rollback point 1000000067 was generated.

<HUAWEI> display configuration commit changes since 1000000067
Building configuration...
  #
- snmp-agent
  #
- snmp-agent local-engineid 800007DB0338AB7F111100
  #
- snmp-agent community write public mib-view abc
  #
- snmp-agent community write private mib-view abc
  #

# Display configuration changes at all the available configuration rollback points.

<HUAWEI> display configuration commit changes
Building configuration
Commit changes of commitId 1000000114 2015-06-18 03:04:59
  #
- sysname HUAWEI
  #
+ sysname test
  #

# Display configurations (with the specified tag) that are different between the latest two configuration rollback points.

<HUAWEI> display configuration commit changes last 2 with-tag
Building configuration
  #
+ <cmd-script:vlan batch></cmd>vlan batch 1 to 1000
  <view-entry></view>aaa
+  domain abc
  #

# Display configuration changes at the latest two configuration rollback points.

<HUAWEI> display configuration commit changes last 2
Building configuration...
  #
- info-center logfile size 16
  #
+ info-center logfile size 32
  #

# Display the difference between the current running configuration file and the configuration file a.cfg.

<HUAWEI> display configuration changes running file a.cfg
Building configuration
Warning: The specified configuration file is not the same as the current configuration. There are several differences as follow:
  #
- sysname HUAWEI

# Display the difference between the current running configuration file and specified commit label.

<HUAWEI-A> display configuration changes running label a
2021-03-05 11:37:53.415
Building configuration
.
  #
- sysname HUAWEI-A
  #
+ sysname HUAWEI
  #

**Table 1** Description of the **display configuration changes** command output
Item	Description
Building configuration	Building configuration.
+	New configuration. For each modified configuration, both "-" indicating the deleted configuration and "+" indicating the created configuration are displayed.
-	Deleted configuration. For each modified configuration, both "-" indicating the deleted configuration and "+" indicating the created configuration are displayed.
Commit changes of commitId	Label of the configuration rollback point, which uniquely identifies the configuration rollback point.