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DES-7200 Configuration Guide Chapter 4 OSPF
Configuration
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# Configure Ethernet interface
interface gigabitEthernet 0/1
ip ospf cost 10
Configurations on device B:
# Configure Ethernet interface
interface gigabitEthernet 0/1
ip ospf cost 1
Configure OSPF routing protocol
router ospf 1
max-metric router-lsa
4.4.14 OSPF Fast Convergence Configuration Example
Requirements
Router A and Router B are interconnected throuhg layer-2 switch, and OSPF
protocol is running on devices to establish routes. IP address assignment and
connection layout are shown in the following figure.
OSPF fast convergence configuration example
After the link between Router B and layer-2 switch fails, Router A shall be able to
detect adjacency change within 1 second and quickly respond to the change in
network information.
Detailed configurations
Enabling "Fast Hello" will reduce adjacency change detection time to less than 1
second. Meanwhile, LSA fast convergence shall also be enabled to adapt to the
swift change in network.
Configure Router A:
# Configure Ethernet interface
interface gigabitEthernet 0/1
ip address 192.168.1.1 255.255.255.0
interface gigabitEthernet 0/2
ip address 192.168.2.1 255.255.255.0
ip ospf dead-interval minimal hello-multiplier 5