| To check and investigate OSPF sessions in FortiGate, run the following CLI commands as below to investigate OSPF sessions further.
# diagnose sys session list | grep proto=89 -A 15
Example: # diagnose sys session list | grep proto=89 -A 15
session info: proto=89 proto_state=00 duration=12995 expire=599 timeout=0 flags=00000000 socktype=0 sockport=0 av_idx=0 use=3
origin-shaper=
reply-shaper=
per_ip_shaper=
class_id=0 ha_id=0 policy_dir=0 tunnel=/ vlan_cos=0/0
state=local may_dirty
statistic(bytes/packets/allow_err): org=94428/1378/1 reply=0/0/0 tuples=2
tx speed(Bps/kbps): 7/0 rx speed(Bps/kbps): 0/0
orgin->sink: org pre->in, reply out->post dev=7->0/13->7 gwy=0.0.0.0/0.0.0.0
hook=pre dir=org act=noop 10.89.2.146:0->224.0.0.5:0(0.0.0.0:0)
hook=post dir=reply act=noop 224.0.0.5:0->10.89.2.146:0(0.0.0.0:0)
misc=0 policy_id=4294967295 pol_uuid_idx=0 auth_info=0 chk_client_info=0 vd=0
serial=000000b9 tos=00/00 app_list=0 app=0 url_cat=0
rpdb_link_id=00000000 ngfwid=n/a
npu_state=00000000
--
session info: proto=89 proto_state=00 duration=12998 expire=591 timeout=0 flags=00000000 socktype=0 sockport=0 av_idx=0 use=3
origin-shaper=
reply-shaper=
per_ip_shaper=
class_id=0 ha_id=0 policy_dir=0 tunnel=/ vlan_cos=255/255
state=local nds
statistic(bytes/packets/allow_err): org=95552/1376/1 reply=0/0/0 tuples=2
tx speed(Bps/kbps): 6/0 rx speed(Bps/kbps): 0/0
orgin->sink: org out->post, reply pre->in dev=0->7/7->0 gwy=0.0.0.0/0.0.0.0
hook=out dir=org act=noop 10.89.3.36:0->224.0.0.5:0(0.0.0.0:0)
hook=in dir=reply act=noop 224.0.0.5:0->10.89.3.36:0(0.0.0.0:0)
misc=0 policy_id=0 pol_uuid_idx=0 auth_info=0 chk_client_info=0 vd=0
serial=0000009b tos=ff/ff app_list=0 app=0 url_cat=0
rpdb_link_id=00000000 ngfwid=n/a
npu_state=00000000 --
session info: proto=89 proto_state=00 duration=12998 expire=590 timeout=0 flags=00000000 socktype=0 sockport=0 av_idx=0 use=3
origin-shaper=
reply-shaper=
per_ip_shaper=
class_id=0 ha_id=0 policy_dir=0 tunnel=/ vlan_cos=255/255
state=local nds npu
statistic(bytes/packets/allow_err): org=96432/1383/1 reply=0/0/0 tuples=2
tx speed(Bps/kbps): 6/0 rx speed(Bps/kbps): 0/0
orgin->sink: org out->post, reply pre->in dev=0->19/19->0 gwy=0.0.0.0/0.0.0.0
hook=out dir=org act=noop 136.136.136.24:0->224.0.0.5:0(0.0.0.0:0)
hook=in dir=reply act=noop 224.0.0.5:0->136.136.136.24:0(0.0.0.0:0)
misc=0 policy_id=0 pol_uuid_idx=0 auth_info=0 chk_client_info=0 vd=0
serial=0000009d tos=ff/ff app_list=0 app=0 url_cat=0
rpdb_link_id=00000000 ngfwid=n/a
npu_state=00000000 -- | 
