Configuring Periodic Lsp Tracert; Configuring Protection Switching; Configuration Prerequisites - HP 12500 Series Configuration Manual

NOTE:
For more information about the mpls lspv command, see

Configuring periodic LSP tracert

The periodic LSP tracert function for an MPLS TE tunnel is for locating faults of the MPLS TE tunnel
periodically. It detects the consistency of the forwarding and control plane and records detection results
into logs. You can know whether an MPLS TE tunnel has failed by checking the logs.
If you configure BFD as well as periodical tracert for an MPLS TE tunnel, once the periodical LSP tracert
function detects a fault or inconsistency of the forwarding plane and control plane of the MPLS TE tunnel,
the BFD session for the tunnel will be deleted and a new BFD session will be established according to the
control plane.
After you configure periodic LSP tracert and the mpls te failure-action teardown command for an MPLS
TE tunnel, once an RSVP-TE tunnel failure occurs, the periodic LSP tracert function can detect the failure,
and if RSVP does not re-establish the RSVP-TE tunnel within a specific period of time, MPLS TE will remove
the failed RSVP-TE tunnel and then re-establish it.
To configure periodic LSP tracert for an MPLS TE tunnel:
To do...
Enter system view
Enable LSP verification and enter
MPLS LSPV view
Return to system view
Enter the tunnel interface view of
an MPLS TE tunnel
Enable periodic LSP tracert for the
MPLS TE tunnel
Configure MPLS TE to tear down a
failed RSVP TE tunnel and
reestablish it
NOTE:
For more information about the mpls lspv command, see

Configuring protection switching

Configuration prerequisites

Before you configure protection switching, complete following tasks:
Configure basic MPLS
•
Enable MPLS TE and create an MPLS TE tunnel
•
MPLS Command Reference
Use the command...
system-view
mpls lspv
quit
interface tunnel tunnel-number
mpls te periodic-tracert [ -a
source-ip | -exp exp-value | -h
ttl-value | -m wait-time | -t time-out
| -u retry-attempt ] *
mpls te failure-action teardown
MPLS Command Reference
77
.
Remarks
—
Required
By default, LSP verification is
disabled.
—
—
Required
By default, periodic LSP tracert is
disabled for MPLS TE tunnels.
Optional
Not configured by default
.