Specifications

trace mpls multipath
MP-836
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
trace mpls multipath
To discover all Multiprotocol Label Switching (MPLS) label switched paths (LSPs) from an egress
router to an ingress router, use the trace mpls multipath command in privileged EXEC mode.
trace mpls multipath ipv4 de
stination-address/destination-mask-length
[ti
meout seconds]
[int
erval milliseconds]
[dest
ination address-start address-end]
[so
urce source-address]
[ex
p exp-bits]
[tt
l maximum-time-to-live]
[re
ply mode {ipv4 | router-alert}]
[re
ply dscp dscp-value]
[r
etry-count retry-count-value]
[f
orce-explicit-null]
[o
utput interface tx-interface [nexthop ip-address]]
[has
hkey ipv4 bitmap bitmap-size]
[fl
ags fec]
[ver
bose]
Syntax Description ipv4 Specifies the destination type as a Label Distribution Protocol (LDP) IPv4
a
ddress.
destination-address Address prefix of the target to be tested.
/de
stination-mask-length Number of bits in the network mask of the target address. The slash is
required.
timeout se
conds (Optional) Specifies the timeout interval in seconds. The range is from
0 to 3600. The default is 2 seconds.
interval mill
iseconds (Optional) Sets the time between successive MPLS echo requests in
milliseconds. This allows you to pace the transmission of packets so that
the receiving router does not drop packets. The default is 0 milliseconds.
Valid values are from 0 to 3500000 milliseconds.
destination (Optional) Specifies a network 127 address.
address-start (Optional) The beginning network 127 address.
address-end (Optional) The ending network 127 address.
source (Optional) Specifies the source address or name.
source-address (Optional) Source address or name.
exp ex
p-bits (Optional) Specifies the MPLS experimental field value in the MPLS
header for an MPLS echo reply. Valid values are from 0 to 7. Default is 0.
ttl m
aximum-time-to-live (Optional) Specifies a maximum hop count.
reply mode {ipv
4 |
router-alert}
(Optional) Specifies the reply mode for the echo request packet.
The reply mode is one of the following:
• ipv4 = Reply with an IPv4 User Datagram Protocol (UDP) packet
(default).
• router-alert = Reply with an IPv4 UDP packet with router alert.