Possible Loop With Mpls Lsp Traceroute - Cisco ASR 900 Series Manual

Command Options for ping mpls and trace mpls
keyword and argument. For this example, the repeat count is 2. The MPLS LSP Ping loop sequence is as
follows:
repeat
destination address 1 (address-start
)
for (size from sweep
minimum
to maximum
, counting by size-increment
)
send an lsp ping
destination address 2 (address-start
+
address-
increment
)
for (size from sweep
minimum
to maximum
, counting by size-increment
)
send an lsp ping
destination address 3 (address-start
+
address-
increment
+
address-
increment
)
for (size from sweep
minimum
to maximum
, counting by size-increment
)
send an lsp ping
.
.
.
until destination address = address-end
.
.
.
until repeat = count

Possible Loop with MPLS LSP Traceroute

With the MPLS LSP Traceroute feature, loops can occur if you use the User Datagram Protocol (UDP)
destination address range option and the time-to-live option.
trace mpls
{ipv4
destination-address destination-mask
[destination
address-start
address-end
address-increment
] | traffic-eng
tunnel-interface
tunnel-number
[ttl
maximum-
MPLS Basic Configuration Guide, Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)
80
= 1
MPLS LSP Ping, Traceroute, and AToM VCCV