Cisco Systems MPR-151 manual Mpls ip-ttl-propagate, Usage Guidelines, Task ID Operations, MPR-154

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MPLS Forwarding Commands on Cisco IOS XR Software

mpls ip-ttl-propagate

mpls ip-ttl-propagate

To configure the behavior controlling the propagation of the IP Time-To-Live (TTL) field to and from the MPLS header, use the mpls ip-ttl-propagatecommand in global configuration mode. To return to the default behavior, use the no form of this command.

mpls ip-ttl-propagate disable no mpls ip-ttl-propagate

Syntax Description

Defaults

Command Modes

Command History

disable

Stops the propagation of IP TTL to and from the MPLS header.

Enabled

 

Global configuration

 

 

 

Release

Modification

 

 

Release 2.0

This command was introduced on the Cisco CRS-1.

 

 

Release 3.0

No modification.

 

 

Release 3.2

This command was supported on the Cisco XR 12000 Series Router.

 

 

Release 3.3.0

No modification.

 

 

Usage Guidelines

 

To use this command, you must be in a user group associated with a task group that includes the proper

 

 

task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on

 

 

Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

 

 

By default, the IP TTL is propagated to the MPLS header when IP packets enter the MPLS domain.

 

 

Within the MPLS domain, the MPLS TTL is decremented at each MPLS hop. When an MPLS

 

 

encapsulated IP packet exits the MPLS domain, the MPLS TTL is propagated to the IP header. When

 

 

propagation is disabled, the MPLS TTL is set to 255 during the label imposition phase and the IP TTL

 

 

is not altered.

 

 

 

 

 

 

 

Task ID

 

Task ID

Operations

 

 

 

 

 

 

 

 

mpls-te, mpls-ldp

read, write, read, write

 

 

 

 

 

 

 

 

 

Examples

 

The following example shows how to disable IP TTL propagation:

 

 

RP/0/RP0/CPU0:router(config)# mpls ip-ttl-propagate disable

Cisco IOS XR Multiprotocol Label Switching Command Reference

MPR-154

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Contents Mpls Forwarding Commands on Cisco IOS XR Software MPR-151Clear mpls forwarding counters MPR-152Related Commands CommandDescription MPR-153Syntax Description Defaults Command Modes Command History Mpls ip-ttl-propagateUsage Guidelines Task ID OperationsMpls label range Defaults Command Modes Command HistoryMPR-155 Command Description MPR-156Syntax Description Show mpls forwardingMPR-157 MPR-158 Command Modes Command HistoryRP/0/RP0/CPU0router# show mpls forwarding detail Field Description MPR-159RP/0/RP0/CPU0router# show mpls forwarding location 0/1/CPU0 RP/0/RP0/CPU0router# show mpls forwarding tunnelsMTU MPR-160Show mpls interfaces MPR-161MPR-162 RP/0/RP0/CPU0router# show mpls interfaces detailMPR-163 Show mpls label range MPR-164MPR-165 Show mpls label tableLabel table Value Description Related Commands DescriptionMPR-166 MPR-167 Show mpls lsd applicationsShow mpls lsd applications MPR-168 Show mpls lsd clients MPR-169MPR-170 Show mpls traffic-eng fast-reroute database MPR-171MPR-172 RP/0/RP0/CPU0router# show mpls traffic-eng fast databaseMPR-173 Show mpls traffic-eng fast-reroute log MPR-174Show mpls traffic-eng fast-reroute log MPR-175Task ID Examples Operations MPR-176

MPR-151 specifications

Cisco Systems has long been a leader in networking and telecommunications, and among its extensive product lineup, the Cisco MPR-151 stands out as an advanced networking solution designed to meet the needs of modern enterprises.

The Cisco MPR-151 is a multifunctional platform that integrates several key features and technologies, offering robust performance and versatility for businesses of all sizes. One of its standout characteristics is its ability to provide secure, high-speed connectivity, making it ideal for environments that demand reliable network access. The MPR-151 supports various Ethernet standards, enabling seamless integration with existing infrastructure while ensuring high bandwidth availability for data-intensive applications.

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In conclusion, the Cisco MPR-151 is a powerful, feature-rich networking solution that addresses the diverse needs of modern enterprises. With its high-speed connectivity, robust routing and security capabilities, and advanced management tools, it empowers organizations to maintain efficient, secure, and scalable networks that drive productivity and innovation.