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View MPLS view, interface view
Parameter None
Description Use the
mpls rsvp-te hello command to enable RSVP hello extension.
Use the
undo mpls rsvp-te hello command to disable RSVP hello extension.
By default, RSVP hello extension is disabled.
RSVP-TE uses the hello mechanism to detect whether an RSVP neighbor is still
alive.
Before you can enable RSVP hello extension in interface view, enable RSVP-TE in
interface view and RSVP hello extension in MPLS view.
Example # Enable RSVP hello extension in MPLS view.
<Sysname> system-view
[Sysname] mpls
[Sysname-mpls] mpls rsvp-te hello
# Enable RSVP hello extension on interface Ethernet 1/0.
<Sysname> system-view
[Sysname] interface ethernet 1/0
[Sysname-Ethernet1/0] mpls rsvp-te hello
mpls rsvp-te hello-lost
Syntax mpls rsvp-te hello-lost times
undo mpls rsvp-te hello-lost
View MPLS view
Parameter times: Maximum number of consecutive hello losses before an RSVP neighbor is
considered dead, in the range 3 to 10.
Description Use the
mpls rsvp-te hello-lost command to configure the maximum number
of consecutive hello losses before an RSVP neighbor is considered dead.
Use the
undo mpls rsvp-te hello-lost command to restore the default.
By default, the RSVP node considers an RSVP neighbor is dead if no response is
received after sending three consecutive hellos.
An RSVP node detects whether its RSVP neighbor is still alive by sending hellos
regularly. If no response is received after the number of consecutive hellos reaches
the specified limit, the RSVP node considers its RSVP neighbor as dead. The failure
is handled the same as a link layer communication failure.