Alcatel-Lucent 7450 Manual page 213

least-fill-reoptim-thd
Syntax least-fill-reoptim-thd percent
no least-fill-reoptim-thd
Context config>router>mpls
Description
This parameter is used in the least-fill path selection method. During a timer-based re-signaling of an
LSP path which has the least-fill option enabled, CSPF will first update the least-available bandwidth
figure for the current path of this LSP. It then applies the least-fill path selection method to select a
new path for this LSP. If the new computed path has the same cost as the current path, it will compare
the least-available bandwidth figures of the two paths and if the difference exceeds the user
configured optimization threshold, MPLS will generate a trap to indicate that a better least-fill path is
available for this LSP. This trap can be used by an external SNMP based device to trigger a manual
re-signaling of the LSP path since the timer-based re-signaling will not re-signal the path in this case.
MPLS will generate a path update trap at the first MBB event which results in the re-signaling of the
LSP path. This should clear the eligibility status of the path at the SNMP device.
The no form of this command resets this parameter to its default value.
Default 10
Parameters
percentage — Specifies the least fill reoptimization threshold value as a percentage.
lsp
Syntax [no] lsp lsp-name sender sender-address
Context config>router>mpls>ingress-statistics
Description This command configures statistics in the ingress data path of a terminating RSVP LSP at an egress
LER. The LSP name must correspond to the name configured by the operator at the ingress LER. It
must not contain the special character ":" which is used as a field separator by the ingress LER for
encoding the LSP and path names into the RSVP session name field in the session_attribute object.
The operator must execute the no shutdown for this command to effectively enable statistics.
The same set of counters is updated for packets received over any path of this LSP and over the
lifetime of the LSP. In steady-state, the counters are updated for packets received over the active path
of the LSP. The active path can be the primary path, one of the secondary paths, the FRR detour path,
or the FRR bypass path when the tail-end node is also the MP.
When a hierarchy of LSPs is in use, statistics collection on the outermost label corresponding to the
tunneling LSP and on the inner labels, corresponding to the tunneled LSPs are mutually exclusive. A
consequence of this is that when the operator enables statistics collection on an RSVP LSP which is
also used for tunneling LDP FECs with the LDP over RSVP feature, then statistics will be collected
on the RSVP LSP only. There will be no statistics collected for an LDP FEC tunneled over this RSVP
LSP and also egressing on the same node regardless if the operator enabled statistics collection on
this FEC. When, the operator disables statistics collection on the RSVP LSP, then statistics collection,
if enabled, will be performed on a tunneled LDP FEC.
7450 ESS MPLS Guide
Values 1 — 100%
MPLS and RSVP
Page 213