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Purpose
Command or Action
(Optional) Specifies the number of times the MPLS
LSP monitor instance should check the scan queue
scan delete-factor factor-value
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
scan delete-factor 2
Step 11
before automatically deleting IP SLA operations for
BGP next-hop neighbors that are no longer valid.
The default scan factor is 1. In other words, each time
the MPLS LSP monitor instance checks the scan queue
for updates, it deletes IP SLA operations for BGP
next-hop neighbors that are no longer valid.
If the scan factor is set to 0, IP SLA operations are
never deleted by the MPLS LSP monitor instance. We
do not recommend this configuration.
(Optional) Specifies the amount of time that each
MPLS LSP operation waits for a response from the
timeout milliseconds
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
timeout 50000
Step 12
LSP verification (LSPV) server. The default value is
5000 milliseconds.
(Optional) Specifies a local host IP address (127.
x
.
x
.
x
)
that is used to select the label switched path (LSP)
lsp selector ipv4 ip-address
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
lsp selector ipv4 127.10.10.1
Step 13
from among multiple LSPs. The default value is
127.0.0.1.
(Optional) Specifies whether an explicit null label is
added to the label stack of MPLS LSP echo request
packets. This is disabled by default.
force explicit-null
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
force explicit-null
Step 14
(Optional) Specifies the differentiated services
codepoint (DSCP) value to be used in the IP header
of MPLS LSP echo reply packets.
reply dscp dscp-bits
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
reply dscp 5
Step 15
(Optional) Enables the use of the router alert option
in MPLS LSP echo reply packets. This is disabled by
default.
reply mode router-alert
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
reply mode router-alert
Step 16
(Optional) Specifies the maximum hop count for an
echo request packet to be used for MPLS LSP
operations. The default value is 30.
ttl time-to-live
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mplslm-lsp-trace)#
ttl 40
Step 17
Cisco ASR 9000 Series Aggregation Services Router System Monitoring Configuration Guide, Release 4.2.x
272
Implementing IP Service Level Agreements
Configuring the MPLS LSP Monitoring Instance on a Source PE Router