2.
Configure IS-IS to advertise interface addresses, including the loopback interface addresses.
(Details not shown.)
3.
Execute the display ip routing-table command on each router to verify that the routers
have learned the routes to one another, including the routes to the loopback interfaces. (Details
not shown.)
4.
Configure LSR IDs, and enable MPLS and MPLS TE:
# Configure Router A.
<RouterA> system-view
[RouterA] mpls lsr-id 1.1.1.9
[RouterA] mpls te
[RouterA-te] quit
[RouterA] interface gigabitethernet 2/0/2
[RouterA-GigabitEthernet2/0/2] mpls enable
[RouterA-GigabitEthernet2/0/2] quit
# Configure Router B.
<RouterB> system-view
[RouterB] mpls lsr-id 2.2.2.9
[RouterB] mpls te
[RouterB-te] quit
[RouterB] interface gigabitethernet 2/0/1
[RouterB-GigabitEthernet2/0/1] mpls enable
[RouterB-GigabitEthernet2/0/1] quit
[RouterB] interface gigabitethernet 2/0/2
[RouterB-GigabitEthernet2/0/2] mpls enable
[RouterB-GigabitEthernet2/0/2] quit
[RouterB] interface gigabitethernet 2/0/3
[RouterB-GigabitEthernet2/0/3] mpls enable
[RouterB-GigabitEthernet2/0/3] quit
# Configure Router C.
<RouterC> system-view
[RouterC] mpls lsr-id 3.3.3.9
[RouterC] mpls te
[RouterC-te] quit
[RouterC] interface gigabitethernet 2/0/1
[RouterC-GigabitEthernet2/0/1] mpls enable
[RouterC-GigabitEthernet2/0/1] quit
[RouterC] interface gigabitethernet 2/0/2
[RouterC-GigabitEthernet2/0/2] mpls enable
[RouterC-GigabitEthernet2/0/2] quit
[RouterC] interface gigabitethernet 2/0/3
[RouterC-GigabitEthernet2/0/3] mpls enable
[RouterC-GigabitEthernet2/0/3] quit
[RouterC] interface gigabitethernet 2/0/4
[RouterC-GigabitEthernet2/0/4] mpls enable
[RouterC-GigabitEthernet2/0/4] quit
# Configure Router D.
<RouterD> system-view
[RouterD] mpls lsr-id 4.4.4.9
16