Consider the network shown below.
R1
sends packets with label L7
while R2
sends packets with label L4
The LFIB of the different routers are configured as follows.
Router R3
Label | Nexthop | Operation |
L7 | R5 | SWAP(L6) |
L4 | R5 | SWAP(L9) |
Router R5
Label | Nexthop | Operation |
L9 | R4 | POP |
L6 | R7 | POP |
Router R6
Label | Nexthop | Operation |
L9 | R8 | SWAP(L1) |
Router R8
Label | Nexthop | Operation |
L1 | R5 | POP |