Hi,
sorry for my late answer. I was very busy last days. Yes, i configured non-broadcast because i don't want to have multicast inside my wireguard links. Is it possibble to have bouth, fast hello intervall and non-broadcast?
Here are the requestet outputs of ip ospf interface and tcpdump.
output of "show ip ospf interface" when connection is up
wg1 is up
ifindex 9, MTU 1420 bytes, BW 0 Mbit <UP,POINTOPOINT,RUNNING,NOARP>
Internet Address 10.36.101.1/30, Broadcast 10.36.101.3, Area 0.0.0.0
MTU mismatch detection: enabled
Router ID 10.36.5.1, Network Type NBMA, Cost: 10
Transmit Delay is 1 sec, State Backup, Priority 1
Designated Router (ID) 10.36.100.1 Interface Address 10.36.101.2/30
Backup Designated Router (ID) 10.36.5.1, Interface Address 10.36.101.1
Saved Network-LSA sequence number 0x80000005
Multicast group memberships: OSPFAllRouters
Timer intervals configured, Hello 1s, Dead 5s, Wait 5s, Retransmit 5
Hello due in 0.012s
Neighbor Count is 1, Adjacent neighbor count is 1
============================================================================================
output of "show ip ospf interface" when connection is down
wg1 is up
ifindex 9, MTU 1420 bytes, BW 0 Mbit <UP,POINTOPOINT,RUNNING,NOARP>
Internet Address 10.36.101.1/30, Broadcast 10.36.101.3, Area 0.0.0.0
MTU mismatch detection: enabled
Router ID 10.36.5.1, Network Type NBMA, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 10.36.5.1 Interface Address 10.36.101.1/30
No backup designated router on this network
Saved Network-LSA sequence number 0x80000006
Multicast group memberships: OSPFAllRouters
Timer intervals configured, Hello 1s, Dead 5s, Wait 5s, Retransmit 5
Hello due in 0.327s
Neighbor Count is 0, Adjacent neighbor count is 0
===================================================================================
output of tcpdump when connection is up:
11:31:11.804925 IP (tos 0xc0, ttl 1, id 56965, offset 0, flags [none], proto OSPF (89), length 68)
10.36.101.2 > 10.36.101.1: OSPFv2, Hello, length 48
Router-ID 10.36.100.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.2, Backup Designated Router 10.36.101.1
Neighbor List:
10.36.5.1
11:31:11.950761 IP (tos 0xc0, ttl 1, id 28025, offset 0, flags [none], proto OSPF (89), length 68)
10.36.101.1 > 10.36.101.2: OSPFv2, Hello, length 48
Router-ID 10.36.5.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.2, Backup Designated Router 10.36.101.1
Neighbor List:
10.36.100.1
11:31:12.805336 IP (tos 0xc0, ttl 1, id 56968, offset 0, flags [none], proto OSPF (89), length 68)
10.36.101.2 > 10.36.101.1: OSPFv2, Hello, length 48
Router-ID 10.36.100.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.2, Backup Designated Router 10.36.101.1
Neighbor List:
10.36.5.1
11:31:12.951058 IP (tos 0xc0, ttl 1, id 28026, offset 0, flags [none], proto OSPF (89), length 68)
10.36.101.1 > 10.36.101.2: OSPFv2, Hello, length 48
Router-ID 10.36.5.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.2, Backup Designated Router 10.36.101.1
Neighbor List:
10.36.100.1
=======================================================================================
output of tcpdump when connection is down:
11:27:18.746172 IP (tos 0xc0, ttl 1, id 27984, offset 0, flags [none], proto OSPF (89), length 64)
10.36.101.1 > 10.36.101.2: OSPFv2, Hello, length 44
Router-ID 10.36.5.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.1
11:28:18.746556 IP (tos 0xc0, ttl 1, id 27985, offset 0, flags [none], proto OSPF (89), length 64)
10.36.101.1 > 10.36.101.2: OSPFv2, Hello, length 44
Router-ID 10.36.5.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.1
11:29:18.747514 IP (tos 0xc0, ttl 1, id 27986, offset 0, flags [none], proto OSPF (89), length 64)
10.36.101.1 > 10.36.101.2: OSPFv2, Hello, length 44
Router-ID 10.36.5.1, Backbone Area, Authentication Type: none (0)
Options [External]
Hello Timer 1s, Dead Timer 5s, Mask 255.255.255.252, Priority 1
Designated Router 10.36.101.1