Alcatel-Lucent 7450 Manual page 275

When an unmapped LSP primary path goes into retry, it uses the main CT until the number of retries
reaches the value of the new main-ct-retry-limit parameter. If the path did not come up, it must start
using the backup CT at that point in time. By default, this parameter is set to infinite value. The new
main-ct-retry-limit parameter has no effect on an LSP primary path which retries due to a failure
event.
An unmapped LSP primary path is a path which has never received a Resv in response to the first
Path message sent. This can occur when performing a 'shut/no-shut' on the LSP or LSP primary path
or when the node reboots. An unmapped LSP primary path goes into retry if the retry timer expired or
the head-end node received a PathErr message before the retry timer expired.
When the re-signal timer expires, CSPF will try to find a path with the main CT. The head-end node
must re-signal the LSP even if the new path found by CSPF is identical to the existing one since the
idea is to restore the main CT for the primary path. A path with main CT is not found, the LSP
remains on its current primary path using the backup CT.
When the user performs a manual re-signal of the primary path, CSPF will try to find a path with the
main CT. The head-end node must re-signal the LSP as in current implementation.
The no form of this command disables the use of the Diff-Serv backup CT.
Default no backup-class-type
Parameters ct-number — The Diff-Serv Class Type number. One or more system forwarding classes can be
bandwidth
Syntax bandwidth rate-in-mbps
no bandwidth
Context config>router>mpls>lsp>primary
config>router>mpls>lsp>secondary
Description This command specifies the amount of bandwidth to be reserved for the LSP path.
The no form of this command resets bandwidth parameters (no bandwidth is reserved).
Default no bandwidth (bandwidth setting in the global LSP configuration)
Parameters
rate-in-mbps — The amount of bandwidth reserved for the LSP path in Mbps. Allowed values are
7450 ESS MPLS Guide
1. Receipt of a Resv refresh message with the 'Preemption pending' flag set or a PathErr message
with error code=34 ("Reroute") and a value=1 ("Reroute request soft preemption"). This
invokes the soft preemption MBB.
1. Receipt of a ResvTear message.
1. A configuration change MBB.
1. The user executing the clear>router>mpls>lsp command.
mapped to a CT.
Values 0-7, integer
integers in the range of 1 to 100000.
Values
0 — 100000
MPLS and RSVP
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