[c-nsp] NX-OS MPLS not answering to traces

[Bernhard Schmidt]

Hey everyone,

just a quick question, can anyone confirm or deny that NX-OS 6.1(2) (or
(3)) MPLS P-Routers do not answer to normal traces with propagate-ttl
set (which is the default)?

csr1-kra# traceroute 129.187.0.9
traceroute to 129.187.0.9 (129.187.0.9), 30 hops max, 40 byte packets
 1  * * *
 2  129.187.0.142 (129.187.0.142) (AS 12816)  1.172 ms  1.404 ms  0.981 ms
      [Label=1151 E=0 TTL=1 S=1]
 3  * * *
 4  129.187.0.130 (129.187.0.130) (AS 12816)  1.252 ms *  1.735 ms

csr1-kra# traceroute mpls ipv4 129.187.0.9/32

Tracing MPLS Label Switched Path to 129.187.0.9/32, timeout is 2 seconds

Codes: '!' - success, 'Q' - request not sent, '.' - timeout,
  'L' - labeled output interface, 'B' - unlabeled output interface, 
  'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch,
  'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 
  'P' - no rx intf label prot, 'p' - premature termination of LSP, 
  'R' - transit router, 'I' - unknown upstream index,
  'X' - unknown return code, 'x' - return code 0

Type Ctrl-C to abort.
  0 129.187.0.162 MRU 9216 [Labels: 71 Exp: 0]
. 1 *
L 2 129.187.0.142 MRU 9216 [Labels: 65 Exp: 0] 194 ms
. 3 *
! 4 129.187.0.130 2 ms

Hops 0, 1 and 3 are NX-OS, Hops 2 and 4 are IOS (6500).

Thanks,
Bernhard