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JunosE 11.3.x Command Reference Guide N to Z
trace mpls ip
Syntax
Release Information
Description
Options
1318
trace mpls ip [ vrf vrfName ]
{ targetIpAddress targetIpv4Mask | targetIpv6Prefix }
[ data-size dataSize ]
[ destination startIpAddress endIpAddress increment ]
[ 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.
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
IP or IPv6 address. 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 LDP IPv4 sub-TLV described in RFC 4379—Detecting Multi-Protocol Label Switched
(MPLS) Data Plane Failures (February 2006).
vrfName—Name of the VRF context; when you specify a VRF name, the LSP to the
specified prefix must originate from the VRF because the ping is generated from the
specified VRF
targetIpAddress—IP address of the ping target
targetIpv4Mask—Network mask for target IP address
targetIpv6Prefix—IPv6 address of the ping target
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.
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
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
Copyright © 2010, Juniper Networks, Inc.
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