OAM and SAA Command Reference
Page 1436 7750 SR OS Services Guide
requesting router assumes that the message response will not be received. Any response received
after the request times out will be silently discarded.
Default 5
Values 1 — 10
interval interval — The interval parameter in seconds, expressed as a decimal integer. This
parameter is used to override the default request message send interval and defines the minimum
amount of time that must expire before the next message request is sent.
If the interval is set to 1 second, and the timeout value is set to 10 seconds, then the maximum
time between message requests is 10 seconds and the minimum is 1 second. This depends upon
the receipt of a message reply corresponding to the outstanding message request.
Default 1
Values 1 — 10
path-destination ip-address —
interface interface-name — Specifies the name of an IP interface. The name must already exist in
the config>router>interface context.
next-hop ip-address — Only displays static routes with the specified next hop IP address.
Values ipv4-address: a.b.c.d (host bits must be 0)
ipv6-address: x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0 — FFFF]H
d: [0 — 255]D
lsp-trace
Syntax lsp-trace {{[lsp-name] [path path-name]} | {prefix ip-prefix/mask}} [fc fc-name] [profile {in
| out}]] [max-fail no-response-count] [probe-count probes-per-hop] [size octets][min-ttl
min-label-ttl]] [max-ttl max-label-ttl] [timeout timeout] [[interval interval] [path-destination
ip-address] [interface if-name | next-hop ip-address]][detail]
Context <GLOBAL>
config>saa>test>type
Description Displays the hop-by-hop path for an LSP.
The lsp-trace command performs an LSP traceroute using the protocol and data structures defined in
the IETF draft (draft-ietf-mpls-lsp-ping-02.txt).
The LSP traceroute operation is modeled after the IP traceroute utility which uses ICMP echo request
and reply packets with increasing TTL values to determine the hop-by-hop route to a destination IP.
In an LSP traceroute, the originating device creates an MPLS echo request packet for the LSP to be
tested with increasing values of the TTL in the outermost label. The MPLS echo request packet is
sent through the data plane and awaits a TTL exceeded response or the MPLS echo reply packet from
the device terminating the LSP. The devices that reply to the MPLS echo request packets with the
TTL exceeded and the MPLS echo reply are displayed.
Parameters lsp-name — Name that identifies an LSP to ping. The LSP name can be up to 32 characters long.
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