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JunosE 11.3.x Command Reference Guide N to Z
trace mpls l3vpn
Syntax
Release Information
Description
Options
1322
trace mpls l3vpn [ vrf vrfName ]
{ targetAddress targetMask | 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 ] [ bottom-label-ttl bottomLabelTtl ] [ 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
L3VPN IP or IPv6 prefix. Discovers the path MPLS packets follow to the destination. There
is no no version.
The echo request packet generated by this command contains either the VPN IPv4
sub-TLV or VPN IPv6 sub-TLV described in RFC 4379—Detecting Multi-Protocol Label
Switched (MPLS) Data Plane Failures (February 2006). Which sub-TLV is included
depends on whether the trace is intended for an IPv4 prefix or an IPv6 prefix.
You can use this command to send a request to a VPNv4 prefix in the specified VRF. If
you do not specify a VRF, then you must issue the command from the VRF context. In
either case, the trace originates from the parent router.
vrfName—Name of the VRF context
targetAddress—IP address of the target VPN network
targetMask—Netmask for the target address
targetIpv6Prefix—IPv6 prefix for the target VPN network
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
Copyright © 2010, Juniper Networks, Inc.
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