target traffic-eng
To specify the target MPLS traffic engineering tunnel to be used in an MPLS LSP ping or MPLS LSP trace
operation, use the
target traffic-eng
command in the appropriate configuration mode. To unset the tunnel,
use the
no
form of this command.
target traffic-eng tunnel tunnel-interface
no target traffic-eng
Syntax Description
Tunnel ID of an MPLS traffic-engineering tunnel (for example, tunnel
10) configured on the router. Range is 0 to 65535.
tunnel tunnel-interface
Command Default
No default behavior or values
Command Modes
IP SLA MPLS LSP ping configuration
IP SLA MPLS LSP trace configuration
Command History
Modification
Release
This command was introduced.
Release 3.4.0
Usage Guidelines
Use the
target traffic-eng
command to specify a target router and to indicate the destination as an MPLS
traffic-engineering (TE) tunnel in an MPLS LSP ping or MPLS LSP trace operation. The
target traffic-eng
command identifies the tunnel interface and the appropriate label stack associated with the LSP to be pinged
or traced. An LSP tunnel interface is the head-end of a unidirectional virtual link to a tunnel destination.
Using the
target traffic-eng
command, you can configure only one MPLS TE tunnel as the target in an
MPLS LSP ping or trace operation. If you enter the command a second time and configure a different
tunnel interfaces, you overwrite the first tunnel ID.
Note
An IP SLA ping operation tests connectivity in the LSP using verification on the specified Forwarding
Equivalence Class (FEC)
—
in this case, MPLS TE tunnel
—
between the ping origin and the egress node
identified with the
target traffic-eng
command. This test is carried out by sending an MPLS echo request
along the same data path as other packets belonging to the tunnel. When the ping packet reaches the end of
the path, it is sent to the control plane of the egress label switching router (LSR), which then verifies that it
is indeed an egress for the MPLS TE tunnel. The MPLS echo request contains information about the tunnel
whose LSP path is being verified.
In an MPLS network, an IP SLA trace operation traces the LSP paths to a target router identified with the
target traffic-eng
command. In the verification of LSP routes, a packet is sent to the control plane of each
Cisco IOS XR System Monitoring Command Reference for the Cisco XR 12000 Series Router, Release 4.1
OL-24735-01
265
IP Service Level Agreement Commands
target traffic-eng