Hi,

In my previous post, I used a topology to illustrate MPLS FRR. I have used groups to simplify the configuration.This post is mainly aimed at people who are new to grouping in Juniper. Consider the following topology

groups

For enabling mpls on an interface , we need to use following command for each interface, for example am taking ge-0/0/0.12 interface as an example, so if you see here , i have to do it manually for all the interfaces and then i should configure protocols like ospf, mpls,rsvp as i was dealing with all 3 in the previous post.


set interface ge-0/0/0.12 family mpls

set protocols mpls interface ge-0/0/0.12

set protocols rsvp interface ge-0/0/0.12

set protocols ospf area 0 interface ge-0/0/0.12

so instead of doing this individually, juniper has something called a grouping concept where in you can define one and re-use it like a programming variable.

Let us see how i applied it

The below output shows you how many interfaces i would need to configure individually.

pic-1-without-any-groups

Let us see how we will configure Mpls family for all the interfaces

pic-2-interface-with-group

Now, let us configure all the three protocols for 6 logical systems and apply them

pic-3-protocol-config-groups

In My initial days I had trouble understanding this from documentation, hope this gives you a practical insight into this

Regards

Rakesh M