exp
To specify the MPLS experimental field (EXP) value in the header of echo request packets, use the exp
command in the appropriate configuration mode. To return to the default value, use the no form of this
command.
exp exp-bits
no exp
Syntax Description
Experimental field value in the header of an echo request packet. Valid values are
from 0 to 7. Default is 0.
exp-bits
Command Default
The experimental field value is set to 0.
Command Modes
IP SLA MPLS LSP ping configuration
IP SLA MPLS LSP trace configuration
IP SLA MPLS LSP monitor ping configuration
IP SLA MPLS LSP monitor trace configuration
Command History
ModificationRelease
This command was introduced.Release 3.4.0
This command was added to the IP SLA MPLS LSP monitor ping and
monitor trace configuration modes.
Release 3.5.0
Usage Guidelines
Use the exp command to set the MPLS experimental field in the headers of echo request packets in an MPLS
LSP ping or MPLS LSP trace operation. The experimental (EXP) field allows for eight different
quality-of-service (QoS) markings that determine the treatment (per-hop behavior) that a transit LSR node
gives to a request packet. You can configure different MPLS EXP levels for different operations to create
differentiated levels of response.
If the exp command is used in IP SLA operation mode, it acts on the headers of echo request packets for the
specific operation being configured. If the exp command is used in IP SLA MPLS LSP monitor mode, it acts
on the headers of echo request packets for all operations associated with the monitored provider edge (PE)
routers. This configuration is inherited by all LSP operations that are created automatically.
Cisco IOS XR System Monitoring Command Reference for the Cisco XR 12000 Series Router, Release 4.1
138 OL-24735-01
IP Service Level Agreement Commands
exp
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