Step 4: Take Appropriate Action

Purpose

Depending on the error you encountered in your investigation, you must take the appropriate action to correct the problem. In this example, the IP address of an interface on transit router R2 is incorrectly configured.

Action

To correct the error in this example, enter the following commands:

[edit interfaces so-0/0/2]

user@R1# show

user@R1# rename unit 0 family inet address 10.1.13.2/30 to address 
10.1.13.1/30

user@R1# show

user@R1# commit

Sample Output

[edit interfaces so-0/0/2]

user@R1# show 

unit 0 {

    family inet {

        address 10.1.13.2/30; <<< Incorrect IP address

    }

    family iso;

    family mpls;

}

[edit interfaces so-0/0/2]

user@R1# rename unit 0 family inet address 10.1.13.2/30 to address 10.1.13.1/30

[edit interfaces so-0/0/2]

user@R1# show 

unit 0 {

    family inet {

        address 10.1.13.1/30; <<< Correct IP address.

    }

    family iso;

    family mpls;

}

[edit interfaces so-0/0/2]

user@R1# commit 

commit complete

What It Means

The sample output shows that interface so-0/0/2 on ingress router R1 is now configured with the correct IP address. This correction results in unique subnet IP addresses for all interfaces in the MPLS network in Figure 15, and the possibility that the LSP might come up.