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ping mpls l2transport
Syntax
ping mpls l2transport [ vrf vrfName ]
{ interfaceType interfaceSpecifier }
[ destination startIpAddress endIpAddress increment ]
[ source address sourceAddr ] [ [ repeat ] packetCount]
[ ttl ttlValue ] [ timeout timeOutVal ]
[ data-size dataSize | sweep-sizes sweepMin sweepMax sweepInt ]
[ pad { ones | zeros
| random | hex-data hexData } ]
[ reply mode { ipv4-udp | ipv4-udp-with-router-alert } ]
[ reply pad-tlv ] [ reply dscp trafficClass ]
[ interval txdelayVal ] [
exp-bits bitValue ] [ bottom-label-ttl bottomLabelTtl ]
[ detail ]
Release Information
Command introduced in JUNOSe
Release 8.0.0.
Description
Sends an MPLS echo request packet to
the specified layer 2 cross-connect virtual (Martini) circuit. There
is no no version.
The echo request packet generated by this command contains the
FEC 128 Pseudowire (Current) sub-TLV described in RFC 4379—Detecting
Multi-Protocol Label Switched (MPLS) Data Plane Failures (February
2006).
 |
Note:
This command is not supported for local cross-connects
because local cross-connects do not employ an LSP.
|
Options
-
vrfName—Name of the VRF context;
when you specify a VRF name, the ping is generated from the specified
VRF—for that reason the MPLS shim interface must exist in the
VRF
-
interfaceType—Interface type;
see Interface Types and Specifiers
-
interfaceSpecifier—Particular
interface; format varies according to interface type; see Interface Types and Specifiers
-
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
- repeat—Specifies that multiple ping packets are
sent
-
packetCount—Number of packets
to send to the destination address, in the range 0–4294967295;
default value is 5; 0 means ping forever
-
ttlValue—Hop count specified
by setting the time-to-live field in the header, in the range 1–255;
default value is 32; however, by default, the TTL on the inner (stacked)
label is set to 1 while transmitting the echo request packet, which
causes the packet to be exceptioned to the SRP module when the stacked
label is exposed
-
timeOutVal—Number of seconds
in the range 1–32 to wait for an MPLS echo reply packet before
the connection attempt times out
-
dataSize—Number of bytes comprising
the MPLS packet, including the header, in the range 0–64000;
default value is 100 bytes
- sweep-sizes—Configures payload sizes, enabling you
to vary the sizes of the echo packets being sent. This capability
is useful for determining the minimum sizes of the MTUs configured
on the nodes along the path to the destination address. This reduces
packet fragmentation which contributes to performance problems. The
default is not to sweep; all packets are the same size.
-
sweepMin—Minimum payload size
in the range 0–64000
-
sweepMax—Maximum payload size
in the range 0–64000
-
sweepInt—Number of bytes to
add to the size of the packet; the change in the size of subsequent
ping packets while sweeping across a range of sizes. For example,
you can configure the sweep interval to sweep across the range of
packets from 0 bytes to 10,000 bytes in increments of sweepInt. By default, send 100, 101, 102, 103...1000. If sweepInt is 5, send 100, 105, 110, 115...1000). When “ sweeping,”
the default interval is 1.
- pad—Specifies the type of bits contained in the
pad TLV. You can set the bits to all ones, all zeros, a random mixture
of ones and zeros, or a specific hexadecimal data pattern, in the
range from 0x0–0xFFFFFFFF. The default data pattern is all zeros.
- 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
- reply pad-tlv—Requests sender of an echo reply to
send a pad TLV
-
trafficClass—Number in the
range 0–255 that represents the value of the traffic class that
the sender of an echo reply is requested to set
-
txDelayVal—Number of milliseconds
in the range 1–50 between transmission of each echo request;
default value is 10 ms
-
bitValue—Value of the EXP
bits in the range 0–7 included in the MPLS echo request packet
-
bottomLabelTtl—Time-to-live
value of the bottom label in the stack
- detail—Displays detailed information about MPLS
echo request sent and echo replies received
Privileged Exec, User Exec
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