Maybe someone can explain to me the difference between Pipe and short pipe Model with regards to the Egress LSR actions.
This is the way i understand it, not really understanding, confused more less
With Pipe model, the egress LSR forwards Packets based on the LSP Diffserv Information, right ? MPLS per hop (exp bits and EXP bits are not propagated to IP Precedence.
Short pipe, the Egress LSR forwards the ip packet based on the tunneled Diffserv information
My question is ? With pipe model, at the egress LSR, how is the packet forwarded based on LSP Diffserv information ? This is the egress LSR, doesnt that mean that before the packet is forwarded to the output interface, the Label is stripped so, its now IPV4 therefore with original DSCP ? So what does the forwarding based on LSP Diffserv mean ? I can understand the Short pipe model as forwarding is based on the tunneled Diffserv information, original DSCP from the customer
As i said, am confused, someone put me right please