Example for Configuration Rollback

This section provides an example for configuration rollback where a user detects an IP address configuration error and expects system configurations to roll back to what they were before the IP addresses were configured.

Networking Requirements

As shown in Figure 1, a user logs in to the router and configures IP addresses for interfaces on the router. After the IP addresses of interfaces are configured, the user detects an IP address planning error and expects to reconfigure the IP addresses of interfaces. Traditionally speaking, the user must delete the IP addresses one by one and reconfigure them.

Configuration rollback simplifies configuration restoration. Configuration rollback allows the user to easily roll system configurations back to what they were before the IP addresses were configured.

Figure 1 Configuration rollback

Interfaces 1 through 4 in this example represent GE 0/1/0, GE 0/1/1, GE 0/1/2, and GE 0/1/3, respectively.

Precautions

None

Configuration Roadmap

The configuration roadmap is as follows:

Configure IP addresses for interfaces on the router.
Check information about configuration rollback points and configuration changes at the most recent configuration rollback points.
Perform configuration rollback by selecting a configuration rollback point to which system configurations are expected to roll back or the number of configuration rollback points that a configuration rollback operation is expected to undergo.

Data Preparation

To complete the configuration, you need the following data:

GE 0/1/0, GE 0/1/1, GE 0/1/2, and GE 0/1/3 on the router
IP addresses for the preceding interfaces: 10.0.0.1/30, 10.0.1.1/30, 10.0.2.1/30, and 10.0.3.1/30

Procedure

Configure IP addresses for GE 0/1/0, GE 0/1/1, GE 1/0/2, and GE 0/1/3 on the router.

<HUAWEI> system-view
[~HUAWEI] interface gigabitethernet 0/1/0
[~HUAWEI-GigabitEthernet0/1/0] ip address 10.0.0.1 30
[*HUAWEI-GigabitEthernet0/1/0] quit
[*HUAWEI] interface gigabitethernet 0/1/1
[*HUAWEI-GigabitEthernet0/1/1] ip address 10.0.1.1 30
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] interface gigabitethernet 0/1/2
[*HUAWEI-GigabitEthernet0/1/2] ip address 10.0.2.1 30
[*HUAWEI-GigabitEthernet0/1/2] quit
[*HUAWEI] interface gigabitethernet 0/1/3
[*HUAWEI-GigabitEthernet0/1/3] ip address 10.0.3.1 30
[*HUAWEI-GigabitEthernet0/1/3] quit
[*HUAWEI] commit description IP address
[~HUAWEI] quit

Check information about configuration rollback points and the differences between the previous and current configurations.

# Display information about configuration rollback points.

<HUAWEI> display configuration commit list verbose
1) CommitId: 1000000006
        Label: -
        User: root
        User-Intf: VTY 1
        Type: CLI
        TimeStamp: 2012-06-29 15:55:20
        Description: IP address 

2) CommitId: 1000000005
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 11:04:05
        Description: 

3) CommitId: 1000000004
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 09:57:34
        Description: 

4) CommitId: 1000000003
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 09:57:21
        Description: 

5) CommitId: 1000000002
        Label: -
        User: anonymous
        User-Intf: CON 1023
        Type: CLI
        TimeStamp: 2012-06-28 16:31:48
        Description: 

6) CommitId: 1000000001
        Label: -
        User: anonymous
        User-Intf: CON 1023
        Type: CLI
        TimeStamp: 2012-06-28 16:31:48
        Description:

# Display the configuration changes at the most recent configuration rollback point.

<HUAWEI> display configuration commit changes last 1
Building configuration

  #
  interface GigabitEthernet0/1/0
+  ip address 10.0.0.1 255.255.255.252
  #
  interface GigabitEthernet0/1/1
+  ip address 10.0.1.1 255.255.255.252
  #
  interface GigabitEthernet0/1/2
+  ip address 10.0.2.1 255.255.255.252
  #
  interface GigabitEthernet0/1/3
+  ip address 10.0.3.1 255.255.255.252
  #

Perform configuration rollback.

# Roll system configurations back to what they were before the most recent configuration rollback point was created.

In this example, the rollback configuration last 1 command has the same return result as the rollback configuration to commit-id 1000000005 command, both indicating that system configurations are rolled back to what they were before configuration rollback point 6 was generated.

<HUAWEI> rollback configuration last 1

# After the configuration rollback operation is complete, check whether a configuration rollback point has been generated.

<HUAWEI> display configuration commit list verbose
1) CommitId: 1000000007
        Label: -
        User: root
        User-Intf: VTY 1
        Type: ROLLBACK
        TimeStamp: 2012-06-29 15:58:22
        Description: 

2) CommitId: 1000000006
        Label: -
        User: root
        User-Intf: VTY 1
        Type: CLI
        TimeStamp: 2012-06-29 15:55:20
        Description: IP address 

3) CommitId: 1000000005
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 11:04:05
        Description: 

4) CommitId: 1000000004
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 09:57:34
        Description: 

5) CommitId: 1000000003
        Label: -
        User: root
        User-Intf: VTY 0
        Type: CLI
        TimeStamp: 2012-06-29 09:57:21
        Description: 

6) CommitId: 1000000002
        Label: -
        User: anonymous
        User-Intf: CON 1023
        Type: CLI
        TimeStamp: 2012-06-28 16:31:48
        Description: 

7) CommitId: 1000000001
        Label: -
        User: anonymous
        User-Intf: CON 1023
        Type: CLI
        TimeStamp: 2012-06-28 16:31:48
        Description:

Verify the configuration.

# Check that the configuration rollback operation is successful.

<HUAWEI> display current-configuration interface
#
interface GigabitEthernet0/1/0
 undo shutdown
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/2
 undo shutdown
#
interface GigabitEthernet0/1/3
 undo shutdown
#

Configuration Files

None.