I'm doing a bit of mpls study and wondered if someone could confirm, or otherwise, my understanding of the LFIB table.
Local tag - The tag that this device would advertise upstream for a neighbour to use to get to a prefix ?
Outgoing tag - The tag I will apply as I send data downstream towards the destination ?
So for example prefix 10.1.1.0/24
Local tag 30 Outgoing tag 35. I put 30 on if I send to 10.1.1.0/24 and I advertise tag 35 to upstream neighbours to get to 10.1.1.0/24. Is that correct ?
What would pop tag mean in the outgoing tag column ? Would that be a PE telling a P to send untagged data because the PE is a neighbour with the CE advertising that prefix ?
Lastly what would the untagged and aggregate options mean ?