Cisco ASR 9000 Serie

PurposeCommand or Action
Specifies the target destination of the MPLS LSP trace
operation as an LDP IPv4 address or MPLS traffic
engineering tunnel.
Do one of the following:
Step 5
•
target ipv4 destination-address destination-mask
•
target traffic-eng tunnel tunnel-interface
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
target ipv4 10.25.26.10 255.255.255.255
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
target ipv4 10.25.26.10/32
or
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
target traffic-eng tunnel 12
(Optional) Specifies the local host IPv4 address used to
select the LSP in the MPLS LSP ping operation.
lsp selector ipv4 ip-address
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
lsp selector ipv4 127.0.0.2
Step 6
(Optional) Adds an explicit null label to the label stack
of an LSP when an echo request is sent.
force explicit-null
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
force explicit-null
Step 7
(Optional) Specifies the differentiated services codepoint
(DSCP) value to be used in echo reply packets.Valid
values are from 0 to 63.
reply dscp dscp-bits
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
reply dscp 2
Step 8
Reserved keywords such as EF (expedited forwarding)
and AF11 (assured forwarding class AF11) can be
specified instead of numeric values.
(Optional) Sets echo requests to reply as an IPv4 UDP
packet with IP router alert. The router-alert reply mode
reply mode router-alert
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
reply mode router-alert
Step 9
forces an echo reply packet to be specially handled by the
transit LSR router at each intermediate hop as it moves
back to the destination.
(Optional) Specifies the MPLS experimental field (EXP)
value to be used in the header of echo reply packets. Valid
values are from 0 to 7.
exp exp-bits
Example:
RP/0/RSP0/CPU0:router(config-ipsla-mpls-lsp-trace)#
exp 5
Step 10
Cisco ASR 9000 Series Aggregation Services Router System Monitoring Configuration Guide, Release 4.2.x
252
Implementing IP Service Level Agreements
Configuring IP SLA MPLS LSP Ping and Trace Operations