Symptom
RP mapping information is not propagating to other CEDGES during certain events.
(*, 224.0.1.40), 00:02:30/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
GigabitEthernet4, Forward/Sparse, 00:02:30/stopped, flags:
(90.90.90.90, 224.0.1.40), 00:01:51/00:02:07, flags: PLTX
Incoming interface: GigabitEthernet4, RPF nbr 10.0.20.12
Outgoing interface list: Null----------------------------------------------------> Issue state
OIF should be LSPVIF itnerface as below.
Non issue state.
(*, 224.0.1.40), 1d01h/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Lspvif0, Forward/Sparse, 1d01h/stopped
GigabitEthernet4, Forward/Sparse, 1d01h/stopped
(90.90.90.90, 224.0.1.40), 1d01h/00:02:53, flags: LT
Incoming interface: GigabitEthernet4, RPF nbr 10.0.20.12
Outgoing interface list:
Lspvif0, Forward/Sparse, 1d01h/stopped-------------------------> No issue
Conditions
In Certain scenarios like autorp removal/addition, SDWAN multicast Disable/Enable, Multicast-routinf disable/enable,
Booting UP or kept IDLE, AutoRP mappings are not propagated.
This is due to LSPVIF interface got removed from Mroute OIF of 224.0.1.40 (AutoRP Discovery group)
Workaround
clear ip mroute vrf 224.0.1.40
Example:
If the problem is in VRF 1,
clear ip mroute vrf 1 224.0.1.40
Steps:
1. Do overlay mroute clear as above.
2. Overlay Mroute for 224.0.1.40 will have OIF as LSPVIF instead of NULL after the clear event.
And RP mapping will be given to all other CEDGES.
