I'm working with two device Cisco and the SDWAN box. the SDWAN box setting are simple turn OSPF on enter the Area ID 0 and Name Backbone Type Normal. that's all on that that box. below are the OSPF config and VLAN 10 in which the box is connected too.
PARAC01#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
64.211.27.158 0 FULL/ - 00:00:33 6.1.1.249 GigabitEthernet3/40
100.64.63.34 0 FULL/ - 00:00:35 6.1.1.241 GigabitEthernet3/39
6.1.0.253 0 FULL/ - 00:00:37 30.1.1.62 Vlan10
6.1.0.252 0 FULL/ - 00:00:38 6.1.0.10 GigabitEthernet3/44
PARAC01#sh ip ospf
Routing Process "ospf 100" with ID 6.1.0.251
Start time: 00:00:51.592, Time elapsed: 33w6d
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
It is an autonomous system boundary router
Redistributing External Routes from,
static, includes subnets in redistribution
ospf 1, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 1155. Checksum Sum 0x24506BF
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
Reference bandwidth unit is 100 mbps
Area 1
Number of interfaces in this area is 2
Area has no authentication
SPF algorithm last executed 1w4d ago
SPF algorithm executed 25 times
Area ranges are
Number of LSA 4. Checksum Sum 0x01DC3B
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0
Routing Process "ospf 1" with ID 6.1.0.254
Start time: 00:00:51.584, Time elapsed: 33w6d
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
It is an autonomous system boundary router
Redistributing External Routes from,
static, includes subnets in redistribution
ospf 100, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 20. Checksum Sum 0x08B868
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 1
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
Reference bandwidth unit is 100 mbps
Area BACKBONE(0)
Number of interfaces in this area is 31 (2 loopback)
Area has no authentication
SPF algorithm last executed 00:00:12.100 ago
SPF algorithm executed 11952 times
Area ranges are
Number of LSA 5. Checksum Sum 0x0228DE
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 2
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0
this the VLAN config
PARAC01#sh ip ospf int vlan 10
Vlan10 is up, line protocol is up
Internet Address 30.1.1.61/26, Area 0
Process ID 1, Router ID 6.1.0.254, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:08
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 14/14, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 10
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 6.1.0.253
Suppress hello for 0 neighbor(s)