R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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The output shows that the BFD session between Firewall A and Router B is deleted and no
information is displayed.
# Display routes to 120.1.1.0/24 on Firewall A, and you can see that Firewall A communicates
with Router B through Router C.
<FirewallA> display ip routing-table 120.1.1.0 verbose
Routing Table : Public
Summary Count : 2
Destination: 120.1.1.0/24
Protocol: OSPF Process ID: 1
Preference: 10 Cost: 4
IpPrecedence: QosLcId:
NextHop: 10.1.1.100 Interface: GigabitEthernet0/2
BkNextHop: 0.0.0.0 BkInterface:
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
BKTunnel ID: 0x0 BKLabel: NULL
State: Active Adv Age: 00h58m10s
Tag: 0
Destination: 120.1.1.0/24
Protocol: OSPF Process ID: 0
Preference: 0 Cost: 2
IpPrecedence: QosLcId:
NextHop: 192.168.0.100 Interface: GigabitEthernet0/1
BkNextHop: 0.0.0.0 BkInterface:
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
BKTunnel ID: 0x0 BKLabel: NULL
State: Invalid Adv Age: 00h58m05s
Tag: 0
Troubleshooting OSPF configuration
No OSPF neighbor relationship established
Symptom
No OSPF neighbor relationship can be established.
Analysis
If the physical link and lower layer protocols work well, check OSPF parameters configured on interfaces.
Two neighbors must have the same parameters, such as the area ID, network segment and mask (a P2P
or virtual link may have different network segments and masks).
Solution
1. Display OSPF neighbor information using the display ospf peer command.
2. Display OSPF interface information using the display ospf interface command.
3. Ping the neighbor router’s IP address to check connectivity.
4. Check OSPF timers. The dead interval on an interface must be at least four times the hello interval.