traceroute mpls ipv6 for IOS-XR

[saif]

Hi 

i configure unified mpls in core network , trace & ping mpls is fine for ipv4  but not for ipv6 

in BGP i receive bgp ipv6 label  unicast update  normal trace for ipv6 is fine it show label in path 

but  when used traceroute mpls ipv6 , its not fine & output is Q letter as result of trace 

I used IOS-XR 

[Harold Ritter · Accepted solution]

Hi @saif  ,

MPLS oam is used to test the MPLS data plane. MPLS oam using IPv6 will not work unless you configure LDPv6 or SR MPLS in the core.

RP/0/0/CPU0:PE2#traceroute mpls ipv6 2001:db8:12ff::1/128
Thu May 26 16:26:05.026 UTC

Tracing MPLS Label Switched Path to 2001:db8:12ff::1/128, 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 rx label,
'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 escape sequence to abort.

0 2001:db8:12ff:34::4 MRU 1500 [Labels: 24004 Exp: 0]
L 1 2001:db8:12ff:34::3 MRU 1500 [Labels: 24004 Exp: 0] 20 ms
L 2 2001:db8:12ff:23::2 MRU 1500 [Labels: implicit-null Exp: 0] 20 ms
! 3 2001:db8:12ff:12::1 30 ms
RP/0/0/CPU0:PE2#

Regards,

[saif]

Hi sir

kindly you  do mean we need to activate ipv6 address family

in mpls ldp 

as below

mpls ldp 

address- family ipv6 

[Harold Ritter]

Hi @saif  ,

Yes, that is correct.

mpls ldp

address-family ipv6

!

interface GigabitEthernet0/0/0/0

address-family ipv6

Regards,