Mpls Rules For Ttl Expiration; Figure 52: Ttl Processing On Outgoing Mpls Packets - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BGP AND MPLS CONFIGURATION GUIDE 2010-10-12 Configuration Manual

JunosE 11.3.x BGP and MPLS Configuration Guide

MPLS Rules for TTL Expiration

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Figure 52: TTL Processing on Outgoing MPLS Packets

MPLS takes the following actions when the TTL in a MPLS label of a received MPLS
packet expires:
A TTL-expired ICMP packet is constructed.
1.
The destination address of ICMP packet is set to the source address of the IP packet
2.
that was encapsulated in the MPLS packet.
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