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

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 Vlanif10ip address 192.168.10.124 25

Link router vlan60 Configure to ：

interface Vlanif60ip address 19.0.0.1 255.255.255.252

As shown in the figure ：

interface Vlanif60ip 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 1area 0.0.0.0network 192.168.20.0 0.0.0.255network 192.168.30.0 0.0.0.255network 11.1.1.1 0.0.0.0network 19.0.0.1 0.0.0.0network 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 GigabitEthernet0/0/1ip address 19.0.0.2 255.255.255.252

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

interface GigabitEthernet0/0/2ip address 29.0.0.2 255.255.255.252

To configure ospf： Get into ospf 1 see ：

ospf 1default-route-advertisearea 0.0.0.0network 19.0.0.2 0.0.0.0network 29.0.0.2 0.0.0.0network 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 ：