Chapter II Large Web advanced OSPF area 0

OSPF -only (single region)

Experimental requirements:

1. Configure the OSPF single area.

2. Configure the default route to the Internet on R2 .

3. Configure PAT on the R2 to convert the 172.16.2.0/24 network Segment to the address of the f0/0 Port.

4, Configure static NAT on R2, publish to intranet server Server1.

Experimental results:

1, the intranet can access each other (ping).

2, PC2 can access the external network (ping).

3, the external network server can access the intranet (ping) published server.

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First, set the PC address

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Second, set the server address

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Third, set the router address

[ intranet three routes IP setting method same ]

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Four, the intranet and the external network interface address is

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Five, intranet three router loopback address

R1

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R2

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R3

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Vi. Setting up OSPF dynamic Routing (single region)

Note:the router ID is used to identify the router. How do routers or routerIDs do?

1. The highest router IDis passed through the loopback IP address.

2. If Lookback is not set , the highest IP addresswill be selected on the physical interface .

declare: Network + NET segment + anti-code

Area: Can be 0,1,2 can also be 192.168.1.0 (area code)

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Seven, view

View the routing table

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Viewing interface data

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View Neighbor List

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View OSPF configuration

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Eight, verify the network interoperability

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Nine, set static Nat

R2

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X. Verification

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Xi. Setting up PAT for intranet network access

R2

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R1

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R3

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12. Verification

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13, authentication Network access intranet

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14: Dr and BDR elections

1, automatic election: Routerid largest for Dr, the second largest for BDR (backup)

2, Manual election: Set the priority of the router, high priority for the DR, the second high for BDR

The default priority is 1 for a range of 0--255 0 to not participate in an election command IP OSPF priority

Chapter II Large Web advanced OSPF area 0