Any Transport Over Mpls Virtual Circuit Connection Verification - Cisco ASR 900 Series Manual

MPLS LSP Ping, Traceroute, and AToM VCCV
Type escape sequence to abort.
0 10.6.1.14 MRU 4470 [Labels: 22 Exp: 0]
R 1 10.6.1.5 MRU 4470 [Labels: 21 Exp: 0] 2 ms
R 2 10.6.1.6 4 ms
R 3 10.6.1.6 1 ms
R 4 10.6.1.6 1 ms
R 5 10.6.1.6 3 ms
R 6 10.6.1.6 4 ms
R 7 10.6.1.6 1 ms
R 8 10.6.1.6 2 ms
R 9 10.6.1.6 3 ms
R 10 10.6.1.6 4 ms
R 11 10.6.1.6 1 ms
R 12 10.6.1.6 2 ms
R 13 10.6.1.6 4 ms
R 14 10.6.1.6 5 ms
R 15 10.6.1.6 2 ms
R 16 10.6.1.6 3 ms
R 17 10.6.1.6 4 ms
R 18 10.6.1.6 2 ms
R 19 10.6.1.6 3 ms
R 20 10.6.1.6 4 ms
R 21 10.6.1.6 1 ms
R 22 10.6.1.6 2 ms
R 23 10.6.1.6 3 ms
R 24 10.6.1.6 4 ms
R 25 10.6.1.6 1 ms
R 26 10.6.1.6 3 ms
R 27 10.6.1.6 4 ms
R 28 10.6.1.6 1 ms
R 29 10.6.1.6 2 ms
R 30 10.6.1.6 3 ms
If you know the maximum number of hops in your network, you can set the TTL to a smaller value with the
trace mpls ttl maximum-time-to-live command. The following example shows the same traceroute command
as the previous example, except that this time the TTL is set to 5.
Device# traceroute mpls ipv4 10.6.7.4/32 ttl 5
Tracing MPLS Label Switched Path to 10.6.7.4/32, timeout is 2 seconds
Codes: '!' - success, 'Q' - request not transmitted,
Type escape sequence to abort.
0 10.6.1.14 MRU 4470 [Labels: 22 Exp: 0]
R 1 10.6.1.5 MRU 4474 [No Label] 3 ms
R 2 10.6.1.6 4 ms
R 3 10.6.1.6 1 ms
R 4 10.6.1.6 3 ms
R 5 10.6.1.6 4 ms

Any Transport over MPLS Virtual Circuit Connection Verification

AToM Virtual Circuit Connection Verification (AToM VCCV) allows the sending of control packets inband
of an AToM pseudowire (PW) from the originating provider edge (PE) device. The transmission is intercepted
at the destination PE device, instead of being forwarded to the customer edge (CE) device. This capability
allows you to use MPLS LSP Ping to test the PW section of AToM virtual circuits (VCs).
AToM VCCV consists of the following:
• A signaled component in which the AToM VCCV capabilities are advertised during VC label signaling
• A switching component that causes the AToM VC payload to be treated as a control packet
'.' - timeout, 'U' - unreachable,
'R' - downstream router but not target
MPLS Basic Configuration Guide, Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)
Any Transport over MPLS Virtual Circuit Connection Verification
<------ Router address repeated for 2nd to 30th TTL.
<------ TTL 30.
<------ Router address repeated for 2nd to 5th TTL.
69