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Check the Administrative Group Configuration

 

Purpose

Check that the administrative group coloring is correct and the relevant interfaces are associated with each administrative group correctly

Action

To check the administrative group configuration, enter the following Junos OS CLI operational mode commands, or issue the show command at the [edit protocols mpls] hierarchy level, as shown in the example below:

Sample Output 1

Sample Output 2

Sample Output 3

Meaning

Sample Output 1 shows that administrative group coloring is correctly configured on all relevant routers. Administrative groups redand blue are configured at the [edit protocols mpls] hierarchy level, and relevant interfaces are associated with each administrative group correctly.

R3 is configured with blue coloring and the include and exclude statements are included in the configuration of R1 to ensure that LSP R1-to-R6 always transits R5. The inclusion of red coloring is not strictly necessary. To force the LSP to transit R5,you could color the links on R2 and R3 blue and then exclude the blue links. Red coloring is included in this example to demonstrate the fact that the CSPF algorithm excludes links that do not have a color configured, when the include statement is configured at the [edit protocols mpls] hierarchy level.

In addition, ingress router R1 has CSPF tracing configured in preparation for gathering information when the CSPF algorithm fails later in this example.

Sample Output 2 shows that the correct interfaces are associated with the red and blue administration groups on R1, R3, R5, and R6.

Sample Output 3 confirms that link coloring is correctly reported in the traffic engineering database for R1. Not shown is the traffic engineering database output for the remaining routers, which is similar to the R1 output, and correct.