[RouterC] interface gigabitethernet 2/1/1
[RouterC-GigabitEthernet2/1/1] mpls enable
[RouterC-GigabitEthernet2/1/1] mpls te enable
[RouterC-GigabitEthernet2/1/1] rsvp enable
[RouterC-GigabitEthernet2/1/1] quit
[RouterC] interface pos 2/2/0
[RouterC-POS2/2/0] mpls enable
[RouterC-POS2/2/0] mpls te enable
[RouterC-POS2/2/0] rsvp enable
[RouterC-POS2/2/0] quit
# Configure Router D.
[RouterD] mpls lsr-id 4.4.4.9
[RouterD] mpls te
[RouterD-te] ds-te mode ietf
[RouterD-te] quit
[RouterD] rsvp
[RouterC-rsvp] quit
[RouterD] interface gigabitethernet 2/1/1
[RouterD-GigabitEthernet2/1/1] mpls enable
[RouterD-GigabitEthernet2/1/1] mpls te enable
[RouterD-GigabitEthernet2/1/1] rsvp enable
[RouterD-GigabitEthernet2/1/1] quit
4.
Enable IS-IS TE, and configure IS-IS to receive and send only packets whose cost style is wide:
# Configure Router A.
[RouterA] isis 1
[RouterA-isis-1] cost-style wide
[RouterA-isis-1] mpls te enable level-2
[RouterA-isis-1] quit
# Configure Router B.
[RouterB] isis 1
[RouterB-isis-1] cost-style wide
[RouterB-isis-1] mpls te enable level-2
[RouterB-isis-1] quit
# Configure Router C.
[RouterC] isis 1
[RouterC-isis-1] cost-style wide
[RouterC-isis-1] mpls te enable level-2
[RouterC-isis-1] quit
# Configure Router D.
[RouterD] isis 1
[RouterD-isis-1] cost-style wide
[RouterD-isis-1] mpls te enable level-2
[RouterD-isis-1] quit
5.
Configure MPLS TE attributes of links:
# Configure the maximum bandwidth, maximum reservable bandwidth, and bandwidth
constraints on Router A.
[RouterA] interface gigabitethernet 2/1/1
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