Detailed OSPF configuration of layer 3 switch / router [Huawei ENSP experiment]

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One . Preface

We have successfully configured VRRP+MSTP Use between layer 3 switches and routers .
Now let's record the layer 3 switch / Router OSPF Configuration details .
Requirements are as follows ：

5. The company network needs to be configured on two convergence layer switches and a core router ospf Routing protocol realizes internal network communication .

Let's take a look at the topology first ：

Screenshot of the requirements we need to implement ;

1.1OSPF

stay OSPF Before it appeared , Widely used on the network RIP（Routing Information Protocol） As an internal Gateway Protocol .

because RIP It is a routing protocol based on distance vector algorithm , There is a slow convergence 、 Routing loops 、 Poor scalability and so on , So it was gradually OSPF replace .

OSPF As a link state based protocol , To be able to solve RIP Many problems faced . Besides ,OSPF There are also the following advantages ：

OSPF Send and receive messages in the form of multicast , This can reduce the need for other non running OSPF The impact of routers .
OSPF Supports untyped inter domain routing （CIDR）.
OSPF Support load sharing for equivalent routes .
OSPF Support message encryption .
because OSPF With the above advantages , bring OSPF It is widely used as an excellent internal fast receiving protocol .

Two . The experiment begins

First observe my topology ：

The three-layer switch configuration of the convergence layer is as follows ：

First put the following vlan10 Oral ip The address is configured to ：

interface Vlanif10
ip address 192.168.10.124 25

Link router vlan60 Configure to ：

interface Vlanif60
ip address 19.0.0.1 255.255.255.252

As shown in the figure ：

interface Vlanif60
ip address 29.0.0.1 255.255.255.252

Release the port above vlan, Allow by specifying vlan

OSPF：
Network Current network segment Unmask

ospf 1
area 0.0.0.0
network 192.168.20.0 0.0.0.255
network 192.168.30.0 0.0.0.255
network 11.1.1.1 0.0.0.0
network 19.0.0.1 0.0.0.0
network 192.168.10.0 0.0.0.255

The router configuration is as follows ：
First configure the interface ip：
GigabitEthernet0/0/1 The ports are configured as follows ：

interface GigabitEthernet0/0/1
ip address 19.0.0.2 255.255.255.252

GigabitEthernet0/0/2 The ports are configured as follows ：

interface GigabitEthernet0/0/2
ip address 29.0.0.2 255.255.255.252

To configure ospf：
Get into ospf 1 see ：

ospf 1
default-route-advertise
area 0.0.0.0
network 19.0.0.2 0.0.0.0
network 29.0.0.2 0.0.0.0
network 33.1.1.1 0.0.0.0

Network Current network segment Unmask

Communication detection ：
ping 29.0.0.2

ping 33.1.1.1

Almost done OSPF Configuration requirements .

Check the routing table of the router ;

display ip routing-table

Three layer switch ：