Alcatel-Lucent 7450 Manual page 303

hello-interval
Syntax hello-interval milli-seconds
no hello-interval
Context config>router>rsvp>interface
Description
This command configures the time interval between RSVP hello messages.
RSVP hello packets are used to detect loss of RSVP connectivity with the neighboring node. Hello
packets detect the loss of neighbor far quicker than it would take for the RSVP session to time out
based on the refresh interval. After the loss of the of number keep-multiplier consecutive hello
packets, the neighbor is declared to be in a down state.
The no form of this command reverts to the default value of the hello-interval. To disable sending
hello messages, set the value to zero.
Default
3000 milliseconds
Parameters milli-seconds — Specifies the RSVP hello interval in milliseconds, in multiples of 1000. A 0 (zero)
implicit-null-label
Syntax implicit-null-label [enable | disable]
no implicit-null-label
Context config>router>rsvp>interface
Description
This command enables the use of the implicit null label over a specific RSVP interface.
All LSPs for which this node is the egress LER and for which the path message is received from the
previous hop node over this RSVP interface will signal the implicit null label. This means that if the
egress LER is also the merge-point (MP) node, then the incoming interface for the path refresh
message over the bypass dictates if the packet will use the implicit null label or not. The same for a 1-
to-1 detour LSP.
The user must shutdown the RSVP interface before being able to change the implicit null
configuration option.
The no form of this command returns the RSVP interface to use the RSVP level configuration value.
Default
disable
Parameters enable — This parameter enables the implicit null label.
disable — This parameter disables the implicit null label.
7450 ESS MPLS Guide
value disables the sending of RSVP hello messages.
Values 0 — 60000 milliseconds (in multiples of 1000)
MPLS and RSVP
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