Network aggregation CIDR, OSPF, RIP route redistribution configuration instance

address rollup Configuration instance, the topology diagram looks like this: R2 connected to multiple network segment address (especially this kind of continuous IP address is the most should do network summary), the same R4 also configured a lot of network segment information.

r2 r1 " between OSPF protocol area 1 r1 and R3 area 0 r3 and R4 rip

The loopback 0 addresses of the four routers are 1.1.1.1/32 and 2.2.2.2/32 and 3.3.3.3/32, respectively and 4.4.4.4/32.

Someone told me whether I wrote too detailed blog, in fact, I am also tangled in this matter, because after all too tired, a blog to write, to do, it will take me a few hours, alas ... Don't say, please mercy a bit of praise, support!!!

The entire topology is interconnected by configuring routing redistribution for OSPF and RIP protocols. and Integrate the addresses above the R2 and R4.

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R1 the above configuration. The IP address of theloopback 0 is configured first as the management address and also in OSPF Router-id address. Finally , the OSPF routing protocol is configured.

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R2 The above configuration (see clear picture), there are four IP addresses connected to the extranet , especially if the IP address like this one should be configured with address summarization. I'm here to use loopback as a simulated extranet for each network segment.

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Here is the configuration R2 The related configuration information for routing OSPF.

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SW3 the above configuration. The router above needs to configure both routing protocols RIP and OSPF. Routing redistribution is required, with detailed configuration of routing redistribution I've written two of them before.

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SW4 the above configuration. This router only belongs to the RIP Association, so only the RIP protocol is configured. The other is to configure the IP addresses of each simulated extranet .

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Here is the RIP protocol configured, but no if you want to see About redistributing OSPF, RIP, direct-attached routes, default routes, click: http://zhang2015.blog.51cto.com/9735109/1619718

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Let's take a look below The Routing table for R1 , at which time the routing entries are very numerous.

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The following is the main play of this article, although the principle and configuration are important for a single command. The point is: ① This command needs to calculate how much of the network segment is ultimately configured. ② for inter-zone routing only needs to be configured on the router that declares the segment information (ABR) .

This is only the configuration of the internal Route rollup, and you can see that there are not so many route entries again after the configuration is complete.

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below are the R3 above to view the routing table information. There are also many inter-zone routing entries.

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below the The ASBR router is configured with an external route summary information. and view the routing table again.

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Experience Summary: When configuring CIDR, be careful not to configure the wrong routers, the configuration of inter-zone routes, and the external route rollup configuration commands.

OK , here's the experiment! Thank you! Welcome to discuss with us!

This article is from the "My World" blog, please be sure to keep this source http://zhang2015.blog.51cto.com/9735109/1660190

Network aggregation CIDR, OSPF, RIP route redistribution configuration instance