Mpls Ip Propagate-Ttl - Juniper JUNOSE SOFTWARE 11.0.X - COMMAND REFERENCE A TO M 1-11-2010 Command Reference Manual

mpls ip propagate-ttl

[ no | default ] mpls ip propagate-ttl [ forwarded | local ]
Syntax
Command introduced before JUNOSe Release 7.1.0.
Release Information
Controls the value for the TTL field in the MPLS header at the tunnel ingress when a
Description
label is assigned to an IP packet. Enabled by default, this command sets the TTL to
the TTL value from the IP packet header.
The no version sets the value to 255 to hide the network structure from all traffic,
preventing the traceroute command from discovering and displaying LSP hops. The
no version changes the TTL processing model from the default uniform model to the
pipe model.
The default version reverts to the global default, causing the TTL field to be copied
from the IP packet header and enabling the traceroute command to show all the
hops in the network.
Options
Global Configuration
Mode
forwarded Reveals the network structure to traceroute for forwarded packets;
when used with the no version, hides the network structure from traceroute only
for local packets, enabling you to hide the structure of the MPLS network from
your customers, and sets the tunnel model to pipe for forwarded packets
local Reveals the network structure to traceroute for local packets; when used
with the no version, hides the network structure from traceroute only for local
packets, sets the tunnel model to pipe for locally originated packets, and sets
the tunnel model to pipe for locally originated packets
Chapter 13: M Commands
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mpls ip propagate-ttl