Shulou(Shulou.com)06/01 Report--

Previously, I wrote a blog about the primary application of RIP, but now I summarize other aspects of RIP, such as security authentication, default routing, unicast updates of RIP, etc., but they should not be used much in actual engineering projects. It's more about command deployment.

one。 RIP certification

Text mode:

Md5 mode:

Lab Topology:

Deployment:

R1:

R1 (config) # key chain PL

R1 (config-keychain) # key 1

R1 (config-keychain-key) # key-string cisco

R1 (config-keychain-key) # int f0bin0

R1 (config-if) # ip rip authentication mode?

Md5 Keyed message digest

Text Clear text authentication

R1 (config-if) # ip rip authentication key-chain PL

R2:

R2 (config) # key chain PL / / defines the keychain name, which can be inconsistent

R2 (config-keychain) # key 1 / / define key sequence number

R2 (config-keychain-key) # key-string cisco / / define key password

R2 (config-keychain-key) # int f0and0

R2 (config-if) # ip rip authentication mode?

Md5 Keyed message digest-> password plaintext

Text Clear text authentication-> password md5 encryption

R2 (config-if) # ip rip authentication key-chain PL

Show command: show key chain

Show run | s key

II. Default route of RIP

Easy to configure-simple command, just one command

Dynamic adaptation to network topology

Command deployment:

R2 (config) # router rip

R2 (config-router) # default-information originate

-dynamic default routes, usually deployed on edge egress routes

Default route for Renewable RIP-> Murray.

III. Passive interface of RIP

Deployment:

Method ①:

R1 (config) # router rip

R1 (config-router) # passive-interface f0swap 0 / / Router execution

Or

R1 (config-router) # passive-interface vlan 10 Universe 20 Accord 30... / / generally executed on the aggregation layer switch

-optimize packets that the other party does not need

Method ②:

R1 (config) # router rip

R1 (config-router) # passive-interface default / / set all interfaces as passive

R1 (config-router) # no passive-interface f0swap 0 / / enable an interface

General deployment environment:

① is deployed on aggregation layer switches because the access layer switches do not need protocol packets and only recognize mac.

② is deployed on edge router

IV. RIP unicast updates

Deployment:

R1 (config) # router rip

R1 (config-router) # version 2

R1 (config-router) # no auto-summary

R1 (config-router) # network x.0.0.0 / / send out Multicast packet 224.0.0.9

R1 (config-router) # neighbor 12.1.1.2 / / Unicast specifies neighbors and uses unicast packets to interact with neighbors

R1 (config-router) # passive-interface f0swap 0 / / passive interface feature can only suppress multicast, broadcast packets, not unicast packets.

R2 also needs to be deployed.

Note: RIP traffic optimization = passive interface + unicast update

5. Offset list of RIP

Definition: offset-list (increase only, not decrease), used to modify the measure

Deployment:

① matches routes through ACL

Access-list 1 permit 2.2.2.2

② calls ACL through offset list

Router rip

Offset-list 1 in 5 f0amp 0 / / routes coming in from interface f0pic0 increase the hop count by 5

Offset-list 1 out 12 f0amp 0 / / routes out of interface f0max 0 increased by 5

Offset-list 0 out 12 f0amp 0 / / increase all routes out of interface f0max 0 by 5

With regard to the choice of direction:

Where did you learn the route? write in the direction. For example, R1 learns routing from R2, that is, R2 routes to R1, so to increase the hop count of R2 in R1, use in. Whoever receives it will in.

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