1. Scenario 1 Results On R3, interface Tunnel2 is up. ! hostname R3
Lo0: R2
Lo0: R3
Lo0:
S0/0
.14
S0/2
.13
Fa0/0 .5
Fa0/0 .6
/30
/30 !
hostname R3
mpls traffic-eng tunnels
interface Loopback0
ip address
interface Tunnel2
description *** TE Tunnel to R1 ***
ip unnumbered Loopback0
tag-switching ip
tunnel destination
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng priority 1 1
tunnel mpls traffic-eng path-option 1 explicit name path_to_R1
tunnel mpls traffic-eng record-route
router ospf 100
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id
network area 0
network area 0
ip explicit-path name path_to_R1 enable
next-address
next-address
Results
On R3, interface Tunnel2 is up.

2. Scenario 2 Results On R3, interface Tunnel2 is down. ! hostname R3
Lo0: R2
Lo0: R3
Lo0:
S0/0
.14
S0/2
.13
/30
Fa0/0 .5
Fa0/0 .6
.54
.53
/30
/30
S0/1
S0/1
Results
On R3, interface Tunnel2 is down. !
hostname R3
mpls traffic-eng tunnels
interface Loopback0
ip address
interface Tunnel2
description *** TE Tunnel to R1 ***
ip unnumbered Loopback0
tag-switching ip
tunnel destination
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng priority 1 1
tunnel mpls traffic-eng path-option 1 explicit name path_to_R1
tunnel mpls traffic-eng record-route
router ospf 100
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id
network area 0
network area 0
ip explicit-path name path_to_R1 enable
next-address
next-address
R3#sh mpls traffic-eng tunnels tu2
Name: *** TE Tunnel to R1... (Tunnel2) Destination:
Status:
Admin: up Oper: down Path: not valid Signalling: Down
path option 1, type explicit path_to_R1
Config Parameters:
Bandwidth: kbps (Global) Priority: Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: bw-based
auto-bw: disabled
Shortest Unconstrained Path Info:
Path Weight: (TE)
Explicit Route:
History:
Tunnel:
Time since created: 59 minutes, 35 seconds
Time since path change: 3 minutes, 22 seconds
Prior LSP:
ID: path option 1 [111]
Removal Trigger: configuration changed
Last Error: PCALC:: No addresses to connect to
R3#