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

Theoretical study

What is the meaning of question 1:AS?

AS is an autonomous domain, which is a collection of routers or network groups under the control of a regulatory body.

Question 2: what dynamic routing protocols are included in the interior gateway protocol? What dynamic routing protocols are included in the external gateway protocol?

According to whether working within an autonomous region, dynamic routing protocols are divided into internal gateway protocols, external gateway protocols,

Internal gateway protocols: commonly used RIP, OSPF, IGRP, EIGRP, IS-IS

External gateway protocol: mainly used for routing multiple autonomous domains, commonly used BGP, (external gateway protocol specially designed for TCP/IP Internet)

What are the characteristics of the 3:RIP dynamic routing protocol?

It is a common dynamic routing protocol in the network environment of small and medium-sized enterprises.

1 > is a distance vector routing protocol

2 > use hop count as a metric, with a maximum hop count of 15 hops

3 > the default route update period is 30 seconds. If the route update is not received in 180 seconds, the calibrated route is unreachable, and the route is deleted in 240 seconds.

4 > the administrative distance is 120

5 > 4 equal cost routes are supported by default and up to 6 equal cost routes are supported

6 > use UDP 520port for routing updates

Question 4: briefly describe the working principle of RIP?

RIP works by exchanging routing table information directly with neighbors. Tell your routing information to the neighboring router, and then pass it down by the neighboring router in turn.

Job task description

Companies An and B both have their own independent local area networks and connect with CNC routers respectively (three routers are connected to four subnets), requiring the use of RIP dynamic routing to implement the project.

Task implementation

1. Network topology design

two。 Device configuration commands (each router is configured separately)

R1 is configured as follows:

The configuration of CNC is as follows:

R2 is configured as follows:

Configure the computer with an IP address

Dynamic routing:

R1 configuration:

CNC configuration:

R2 is configured as follows:

3. Single-stage test results

Computer ping R1 router interface f0bin0

Router R1 ping router CNC f0bin0 interface

Router CNC ping Router R2 interface f0amp0

Router R2 interface ping computer

4. Comprehensive test results

Two computer ping

5. View routes for each router

View R1 routes:

View CNC routes:

View R2 routes:

6. View RIP related information

View the RIP information for R1:

View the RIP information of CNC:

View the RIP information for R2:

Work expansion

What would be the result of configuring the above tasks with RIP V1? Write configuration commands and test results, and describe the cause.

Configure with RIP V1

Reason: there is no route to the 10.1.2.0tic24 network on the R1 router, so the destination address is unreachable

Think about the question:

Question1: what is the difference between distance vector protocols and link-state protocols?

Distance vector protocol: a standard for broadcasting routing information, periodic updates, and hops as a measure of a path.

Link-state routing protocols: respond quickly to network changes, use trigger incremental updates, and exchange link information with neighbors

Question 2: what is the difference between classful and classless routing protocols?

Classful routing protocols: router updates do not carry subnet mask information, only support fixed-length subnet masks, cannot turn off automatic summarization, and are only applicable to continuous subnet environments, including RIP v1 and IGRP

Classless routing protocols:

Router updates can carry subnet mask information, support variable length subnet mask, turn off free summarization, or configure manual summarization, suitable for any network environment, including RIP v2, EIGRP, OSPF, IS-IS

What is the difference between question 3:RIP v1 and RIP v2?

RIPv1 RIPV2

Support periodic updates support trigger updates on the basis of periodic updates

Automatic summarization cannot be turned off. automatic summarization can be turned off, or it can be summarized manually.

Do not provide authentication provide plaintext and MD5 authentication

Do not support VLSM and CIDR support VLSM and CIDR

Update with broadcast update with Multicast (224.0.0.9)

Classful routing protocol classless routing protocol

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