Latest revision as of 21:22, 19 April 2011

RIPv1

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Background and Perspective

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Message Format

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RIP Operation

Request and Response messages

Each RIP-configured interface sends out a request message on startup, requesting that all RIP neighbors send their complete routing tables.

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Administrativ Distance

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Basic RIPv1 Configuration

Basic RIPv1 Configuration

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Enabling RIP

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Verification and Troubleshooting

Verifying RIP

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Show ip protocols

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Debug ip rip

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Passiv Interfaces

R2(config)#router rip
R2(config-router)#passive-interface FastEthernet 0/0
R2(config-router)#end

Passive-interface

Automatic Summearization

Boundary Routers and Automatic Summarization

Boundary Routers

Processing RIP Updates

Update

• R2 received this information on an interface that belongs to the same classful network (172.30.0.0) as that of the incoming 172.30.1.0 update.
• The IP address for which R2 received the "172.30.1.0 in 1 hops" message was on Serial 0/0/0 with an IP address of 172.30.2.2 and a subnet mask of 255.255.255.0 (/24).
• R2 uses its own subnet mask on this interface and applies it to this and all other 172.30.0.0 subnets that it receives on this interface - in this case, 172.30.1.0.
• The 172.30.1.0 /24 subnet was added to the routing table.

Advantages and Disadvantages of Automatic Summarization

Automatic Summarization wont work with discontiguous networks.

Default Route and RIPv1

Propagating the Default Route in RIPv1

router rip. show ip route.