[ no | default ] mpls ip propagate-ttl [ forwarded |
local ]
Release Information
Command introduced before JUNOSe Release
7.1.0.
Description
Controls the value for the TTL field in the MPLS
header at the tunnel ingress when a 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
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
