VRF aware NTP issues on IOS-XR 6.1.3

[Sumanta Ghosh]

Hi Experts

This is the config we have on ASR9K, running IOS-XR. NTP works fine in single VRF. However, on other VRFs, the NTP doesn't respond. We traced packets in NTP debug, no luck. Any special cmd needed, apart from the below? When application sends NTP request to the Loopback199, there is not response. The ASR is synced with a dedicated GPS based NTP device. L3 IP reachability is fine.

*************************************

RP/0/RSP0/CPU0:Router-1#sh run ntp
Wed Feb 14 08:10:58.078 BST
ntp
 interface Loopback199 vrf om_cn_tenant-1_test
 !
 server vrf nfvi_oam 10.0.92.12 prefer iburst source TenGigE0/0/0/13.4091
 peer vrf om_cn_tenant-1 10.100.4.99 iburst source Loopback99
 update-calendar
!

RP/0/RSP0/CPU0:Router-1#sh run int lo199
Wed Feb 14 08:11:10.943 BST
interface Loopback199
 description ***NTP Loopback for Test-Tenant OAM***
 vrf om_cn_tenant-1_test
 ipv4 address 10.100.5.99 255.255.255.255
!
*************************************

Regards,

Sumanta.

[tkarnani]

Have we tried with?

ntp
 source Loopback199
!
end

[Sumanta Ghosh]

Hi

As per Cisco TAC, the below had to be enabled. Could not find clear example in doc.

ntp
source vrf om_cn_tenant-1 Loopback99
source vrf om_cn_tenant-1_test Loopback199

Regards,
Sumanta.

[issofunky]

So, are these two NTP instances going to see one another as NTP peers/ association