3com MSR 20-20 참조 매뉴얼

MPLS view, interface view

None

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.

# 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 times

MPLS view

times: Maximum number of consecutive hello losses before an RSVP neighbor is 
considered dead, in the range 3 to 10.

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.