Cisco Vs Huawei LAB I – (Configuring OSPF)

OSPF is a link-state IGP. At present, OSPFv2 is intended for IPv4. Defined by the Internet Engineering Task Force (IETF), the Open Shortest Path First (OSPF) protocol is an Interior Gateway Protocol (IGP) implemented on the basis of the link status.

OSPF has the following features:

Wide applications

OSPF is applicable to networks of various sizes and even to the network consisting of hundreds of routers.
Fast convergence
Once the network topology changes, Update packets are transmitted to synchronize the link state databases (LSDBs) of all the routers within the Autonomous System (AS).
According to the collected link status, OSPF calculates routes with the shortest path tree algorithm. This algorithm ensures the generation of loop-free routes.
Area division
An AS can be divided into different areas to facilitate AS management. After the area partition, an LSDB stores routing information only of the local area. The reduce of LSDB size dramatically reduces memory and CPU usage. In addition, less bandwidth is consumed because of the decrease in routing information transmitted within the AS.
Equal-cost routes
OSPF supports multiple equal-cost routes to the same destination.
Routing hierarchy
Four types of routing are available. They are listed in the descending order of priority: intraarea routes, inter-area routes, Type 1 external routes, and Type 2 external routes.
Area-based and interface-based packet authentication guarantees the security of packet interaction.
Multicast packets are transmitted only on certain types of links to reduce the interference for some devices.

NetworksHeaven(config)# router ospf 1
NetworksHeaven(config-router)# network   area 0
NetworksHeaven(config-router)# network   area 0
NetworksHeaven(config-router)# end 

Useful Commands
NetworksHeaven# show ip ospf interface Serial 1/0
NetworksHeaven# show ip ospf
NetworksHeaven# show ip ospf neighbor
NetworksHeaven# show ip route ospf

[NetworksHeaven] ospf 1
[NetworksHeaven-ospf-1] area  0
[NetworksHeaven-ospf-1-area-] network
[NetworksHeaven-ospf-1-area-] network
[NetworksHeaven-ospf-1-area-] return 

Useful Commands
<NetworksHeaven> display ospf interface Serial 1/0
<NetworksHeaven> display ospf 1 brief
<NetworksHeaven> display ospf peer
<NetworksHeaven> display ip routing-table protocol ospf

Cisco Vs Huawei CLI Commands in Slides