Cisco Cisco IOS Software Release 12.0(15)S

You must configure a forwarding adjacency on two LSP tunnels bidirectionally, from A to B and B 
to A. Otherwise, the forwarding adjacency is advertised, but not used in the IGP network.

To configure an IS-IS metric for an MPLS TE forwarding adjacency, use the following command, 
beginning in interface configuration mode:

To verify MPLS TE forwarding adjacency configuration, use this procedure:

Use the show mpls traffic-eng forwarding-adjacency command to see the current tunnels:

Router# show mpls traffic-eng forwarding-adjacency 

  destination 0168.0001.0007.00 has 1 tunnels

    Tunnel7     (traffic share 100000, nexthop 192.168.1.7)

                (flags:Announce Forward-Adjacency, holdtime 0)

Router# show mpls traffic-eng forwarding-adjacency  192.168.1.7

  destination 0168.0001.0007.00 has 1 tunnels

    Tunnel7     (traffic share 100000, nexthop 192.168.1.7)

                (flags:Announce Forward-Adjacency, holdtime 0)

To monitor and maintain an MPLS TE forwarding adjacency, use the following commands in EXEC 
mode:

Router(config-if)# tunnel mpls traffic-eng 

{holdtime value}

Advertises a TE tunnel as a link in an IGP network.

Router(config-if)# isis metric default-metric 

{level-1 | level-2}

Configures the cost metric for a tunnel interface to be used as a 
forwarding adjacency.

You should configure the isis metric command with 
level 1 or 2 to be consistent with the IGP level at 
which you are performing traffic engineering. 
Otherwise, the metric has the default value of 10.