Juniper JUNOSE 11.1.X - COMMAND REFERENCE N TO Z 4-6-2010 Command Reference Manual page 1361

trace mpls rsvp tunnel
trace mpls { traffic-eng | rsvp } [ vrf vrfName ] tunnel tunnelName
Syntax
[ destination startIpAddress endIpAddress increment ]
[ data-size dataSize ]
[ source address sourceAddr ]
[ ttl ttlValue ] [ timeout timeOutVal ]
[ reply mode { ipv4-udp | ipv4-udp-with-router-alert } ]
[ reply pad-tlv ] [ reply dscp trafficClass ]
[ exp-bits bitValue ] [ detail ]
Command introduced in JUNOSe Release 8.0.0.
Release Information
data-size keyword and dataSize variable added in JUNOSe Release 11.1.0.
Sends MPLS echo request packets with successively higher TTL values to the specified
Description
RSVP-TE tunnel. Discovers the path MPLS packets follow to the destination. There
is no no version.
The MPLS echo request packets and echo reply packets created by this command
use the RSVP IPv4 sub-TLV described in RFC 4379 Detecting Multi-Protocol Label
Switched (MPLS) Data Plane Failures (February 2006).
Options
traffic-eng Specifies optional keyword for compatibility with non–E Series
implementations
vrfName Name of the VRF context; specify the VRF only when the RSVP-TE
tunnel originates in the VRF because the ping is generated from the specified
VRF
tunnelName Name of the RSVP-TE tunnel; can be a bypass tunnel
startIpAddress First IP address within the 127.0.0.0/8 destination range
endIpAddress Last IP address within the 127.0.0.0/8 destination range
increment Number in the range 0–255 that specifies the increment between
addresses in the destination address range
dataSize Size of the LSP ping message (does not include the UDP, IP, and MPLS
headers of the packet); in the range 0–6400 bytes. The default value is 100 bytes.
sourceAddr IP address used as the packet source address
ttlValue Hop count specified by setting the time-to-live field in the header, in
the range 1–255; default value is 32
timeOutVal Number of seconds in the range 1–32 to wait for an MPLS echo
reply packet before the connection attempt times out
reply mode Specifies the reply mode for the echo request packet
ipv4-udp Specifies that the echo request packet is an IPv4 UDP packet
ipv4-udp-with-router-alert Specifies that the echo request packet is an IPv4
UDP packet with the router alert bit set in the header so all routers examine
this packet more closely to determine whether further processing is necessary
Chapter 8: T Commands
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trace mpls rsvp tunnel