Alcatel-Lucent 7750 SR OS Service Manual page 1433

In an LSP ping, the originating device creates an MPLS echo request packet for the LSP and path to
be tested. The MPLS echo request packet is sent through the data plane and awaits an MPLS echo
reply packet from the device terminating the LSP. The status of the LSP is displayed when the MPLS
echo reply packet is received.
Parameters
lsp-name — Name that identifies an LSP to ping. The LSP name can be up to 32 characters long.
path path-name — The LSP pathname along which to send the LSP ping request.
prefix ip-prefix/mask — Specifies the address prefix and subnet mask of the destination node.
fc fc-name — The fc parameter is used to indicate the forwarding class of the MPLS echo request
profile {in | out} — The profile state of the MPLS echo request encapsulation.
size octets — The MPLS echo request packet size in octets, expressed as a decimal integer. The
ttl label-ttl — The TTL value for the MPLS label, expressed as a decimal integer.
send-count send-count — The number of messages to send, expressed as a decimal integer. The
timeout timeout — The timeout parameter in seconds, expressed as a decimal integer. This value is
7750 SR OS Services Guide
Default
The active LSP path.
Values
Any path name associated with the LSP.
packets. The actual forwarding class encoding is controlled by the network egress LSP-EXP
mappings.
The LSP-EXP mappings on the receive network interface controls the mapping back to the
internal forwarding class used by the far-end 7750 SR that receives the message request. The
egress mappings of the egress network interface on the far-end 7750 SR controls the forwarding
class markings on the return reply message.
The LSP-EXP mappings on the receive network interface controls the mapping of the message
reply back at the originating 7750 SR.
Default
be
Values
be, l2, af, l1, h2, ef, h1, nc
Default
out
request payload is padded with zeroes to the specified size.
Default
68 — The system sends the minimum packet size, depending on the type of LSP.
No padding is added.
Values
84 — 65535
Default
255
Values
1 — 255
send-count parameter is used to override the default number of message requests sent. Each
message request must either timeout or receive a reply before the next message request is sent.
The message interval value must be expired before the next message request is sent.
Default
1
Values
1 — 100
used to override the default timeout value and is the amount of time that the router will wait for
a message reply after sending the message request. Upon the expiration of message timeout, the
OAM and SAA Command Reference
Page 1435