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

Page: 1355 / 1488

trace mpls ip
Syntax
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 ]
Release Information
Command introduced in JUNOSe Release 8.0.0.
data-size keyword and dataSize variable added in JUNOSe Release 11.1.0.
Description
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).
Options
■
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
trace mpls ip
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Chapter 8: T Commands