OSPF multi zone configuration

OSPF Multi area configuration ​

Refer to the picture 1 Build a network environment , The routers in the network are connected according to the topology in the figure , Configure the interface according to the planned network segment IP Address . Make sure that the routers directly connected to each other ping through . The following operations configure these routers to use OSPF The protocol constructs a routing table , Configure these routers in one area , If there is only one area , It can only be the trunk area , Area number is 0.0.0.0, Or you could write it as 0.​

chart 1 Multi region OSPF Network topology ​

Router R1 Configuration on ,R1 It is the backbone area router .​

<R1>display router id​

RouterID:40.0.0.1 -- Check the current status of the router ID​

<R1>system​

[R1]ospf 1 router-id 1.1.1.1 -- Enable ospf 1 Process and indicate which Router-ID​

[R1-ospf-1]area 0.0.0.0 -- Create an area and enter the area 0.0.0.0​

[R1-ospf-1-area-0.0.0.0]network 40.0.0.0 0.0.255.255 -- Assigned to work in Area 0 Address interface of ​

[R1-ospf-1-area-0.0.0.0]quit​

Router R2 Configuration on ,R2 It is the area boundary router , To specify work in Area 0 Interface and Area 1 The interface of .​

[R2]ospf 1 router-id 2.2.2.2​

[R2-ospf-1]area 0​

[R2-ospf-1-area-0.0.0.0]network 40.0.0.0 0.0.255.255 -- Assigned to work in Area 0 The interface of ​

[R2-ospf-1-area-0.0.0.0]quit​

[R2-ospf-1]area 0.0.0.1​

[R2-ospf-1-area-0.0.0.1]network 40.1.0.0 0.0.255.255 -- Assigned to work in Area 1 The interface of ​

[R2-ospf-1-area-0.0.0.1]quit​

[R2-ospf-1]display this -- Show OSPF 1 Configuration of ​

[V200R003C00] ​

#​

ospf 1 router-id 2.2.2.2 ​

area 0.0.0.0 ​

network 40.0.0.0 0.0.255.255 ​

area 0.0.0.1​

network 40.1.0.0 0.0.255.255 ​

#​

return​

Router R3 Configuration on .​

[R3]ospf 1 router-id 3.3.3.3​

[R3-ospf-1]area 0.0.0.0​

[R3-ospf-1-area-0.0.0.0]network 40.0.0.0 0.0.255.255​

[R3-ospf-1-area-0.0.0.0]quit​

[R3-ospf-1]area 0.0.0.2​

[R3-ospf-1-area-0.0.0.2]network 40.2.0.1 0.0.0.0 -- Write interface address ,wildcard-mask by 0.0.0.0​

[R3-ospf-1-area-0.0.0.2]network 40.2.1.1 0.0.0.0 -- Write interface address ,wildcard-mask by 0.0.0.0​

[R3-ospf-1-area-0.0.0.2]quit​

Router R4 Configuration on .​

[R4]ospf 1 router-id 4.4.4.4​

[R4-ospf-1]area 1​

[R4-ospf-1-area-0.0.0.1]net​

[R4-ospf-1-area-0.0.0.1]network 40.1.0.0 0.0.255.255​

[R4-ospf-1-area-0.0.0.1]quit​

Router R5 Configuration on .​

[R5]ospf 1 router-id 5.5.5.5​

[R5-ospf-1]area 1​

[R5-ospf-1-area-0.0.0.1]network 40.1.0.0 0.0.255.255​

[R5-ospf-1-area-0.0.0.1]quit​

Router R6 Configuration on .​

[R6]ospf 1 router-id 6.6.6.6​

[R6-ospf-1]area 2​

[R6-ospf-1-area-0.0.0.2]network 40.2.0.0 0.0.255.255​

[R6-ospf-1-area-0.0.0.2]quit​

Router R7 Configuration on .​

[R7]ospf 1 router-id 7.7.7.7​

[R7-ospf-1]area 2​

[R7-ospf-1-area-0.0.0.2]network 40.2.0.0 0.0.255.255​

[R7-ospf-1-area-0.0.0.2]quit​

This article comes from 《 Huawei authentication （2021 new edition HCIA The teaching material ）》​

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