Comments on: Configuring RIP – GNS3 Lab

By: kishan

kishan — Fri, 24 Apr 2015 21:15:15 +0000

I am unable to establish serial connection between R0 and R1 through s0/0. Every other connection is displayed by the command ‘show ip route’ except serial connection between s0/0 of both routers R0 and R1.

Am I making any mistake or do I need to modify configuration of routers?

By: ramesh

ramesh — Mon, 16 Mar 2015 08:27:22 +0000

hiiiii……

By: Anonymous

Anonymous — Mon, 16 Mar 2015 08:25:42 +0000

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By: 9tut

9tut — Tue, 22 Jul 2014 12:42:15 +0000

@Shawn: From your output we can see RIP was not activated on your interfaces. Please check your IP addresses and RIP network command to make sure the “network” command in RIP covers the IP addresses of your interfaces.

By: Shawn

Shawn — Tue, 22 Jul 2014 09:48:59 +0000

Hello 9tut. Thanks for your devotion. I always appreciate your help.

There is a problem. I use Packet Tracer 5.2.1 to perform “Configuring RIP – GNS3 Lab”

On the PacketTracer Ro – R1 – R2 has a green light (=it means they communicate well each other)

But
When I check “show ip route” on the each Router, the result was as bellow, it is totally different from what I can see above Example. I really wonder what the problems is.
Thanks for your help.

R0#show ip route
C 12.0.0.0/8 is directly connected, Loopback0

R1#show ip route
C 192.168.2.0/24 is directly connected, FastEthernet0/0

R2#show ip route
C 192.168.2.0/24 is directly connected, FastEthernet0/0
C 200.200.200.0/24 is directly connected, Loopback0

By: Ron17

Ron17 — Wed, 14 May 2014 17:58:56 +0000

very nice lab..

By: Sushil

Sushil — Thu, 27 Mar 2014 05:55:21 +0000

If I use RIP in network then also if I cannot ping from router0 to rourter 2 then what is the reason behind that?????????

By: Ramarao

Ramarao — Wed, 26 Feb 2014 11:48:41 +0000

its very helpful

By: sneha

sneha — Thu, 06 Feb 2014 05:06:18 +0000

very good article and easy for understanding

By: Gopal

Gopal — Tue, 19 Nov 2013 04:03:54 +0000

Very nice articles. it was easy to understand

By: imran khan

imran khan — Mon, 14 Oct 2013 21:18:56 +0000

thanks i hve don my assgnmnt love u

By: Harshaddh

Harshaddh — Mon, 23 Sep 2013 14:16:43 +0000

thanks to guide us …useful knowledge ….

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By: Sachin

Sachin — Sat, 20 Jul 2013 04:33:05 +0000

with reditribute static route

By: Sachin

Sachin — Sat, 20 Jul 2013 04:12:23 +0000

Hi tut,
how we can redistribute in rip ?

By: Sachin

Sachin — Sat, 20 Jul 2013 04:10:11 +0000

very nice….@9tut…excellent job…

By: Konstantin

Konstantin — Sun, 14 Jul 2013 13:21:04 +0000

@9tut

Hi, i have one question, it’s so important RIPv2 with Loopback interface configure?

By: 9tut

9tut — Thu, 06 Jun 2013 01:09:48 +0000

@Aadya: Loopback interface is a logical interface on that router/switch. It opearates in the same way as a physical directly connected interface on that router/switch.

By: Aadya

Aadya — Tue, 04 Jun 2013 22:57:13 +0000

9TUT: “loopback interface” – I couldn’t understand this concept. Any tutorial on this?

By: zam

zam — Mon, 13 May 2013 14:28:18 +0000

@9tut

I have followed everything to a tee but r2 cannot ping anyone r1/r0 even though it is receiving the rip updates and showing the connections exactly the same as above. pls help

By: naveen

naveen — Mon, 06 May 2013 14:35:54 +0000

very nice.

By: Anonymous

Anonymous — Wed, 24 Apr 2013 15:00:54 +0000

Amazing :)

By: 9tut

9tut — Mon, 28 Jan 2013 02:48:37 +0000

@Andrew: Yes, in large networks we should not let the loopback interfaces send routing updates. I just don’t want to make this tutorial complex with the “passive-interface” command.

And yes, the split horizon rule is automatically applied.

By: Andrew

Andrew — Sun, 27 Jan 2013 18:22:50 +0000

Hi 9Tut,

can you explain why you didn’t add “passive interface” on loopback interfaces? This will avoid to propagate routing updates on no necessary interfaces (LAN networks) and during debug to avoid: RIP: ignored v2 packet from 12.0.0.1 (sourced from one of our addresses).

Is the split horizon automatically applied?

By: learner

learner — Thu, 20 Dec 2012 11:59:57 +0000

very helpfull tutorial……

By: learner

learner — Fri, 27 Jul 2012 11:52:47 +0000

@tohritz.. but if you are looking for all pinging up the network throughout, i might suggest you to use no auto-summary, dude

By: learner

learner — Thu, 26 Jul 2012 17:21:31 +0000

@tohritz – since we are configuring loopback interface and not any main router network for routing .. there is no need for using no auto summary command, as no auto summary is only used in case of discontiguous network , i.e. when two major sub networks are connected using a another major sub network i.e, say 192.168.1.0/24 is connected in between by 10.0.0.0/24 network.

By: Avdhesh Shakya

Avdhesh Shakya — Mon, 21 May 2012 19:25:21 +0000

Thank you 9tut I have no word for this website, really its very awesome website.

By: Muditha

Muditha — Thu, 10 May 2012 12:18:35 +0000

anyway thanks 9tut you are doing a great job for student like us. cheers

By: Muditha

Muditha — Thu, 10 May 2012 12:16:52 +0000

@tohrity.. I also agree with you . RIP version 2 is classless routing protocol..after we enter the command no auto summary it displays the truth ….

By: miribeni

miribeni — Thu, 22 Mar 2012 17:59:31 +0000

very impotant tutorial

By: zahir

zahir — Wed, 22 Feb 2012 20:44:17 +0000

very good

By: VIjay

VIjay — Tue, 14 Feb 2012 07:20:29 +0000

Very useful this Tutorial …Thank You Very Much

By: tohritz

tohritz — Thu, 05 Jan 2012 11:09:20 +0000

If my loopback address is: 10.0.8.1 /24, what shall i type to advertise the network?

will it be:
network 10.0.0.0
no auto-summary
or
network 10.0.8.0
no auto-summary

please clarify if we’ll use the no auto-summary command, we’ll we still type the classful network?

By: Johny

Johny — Fri, 16 Dec 2011 09:56:17 +0000

good lab… question: when conf router R0, why did you repeat the command? See

R0(config)#router rip
R0(config-router)#version 2
R0(config-router)#network 12.0.0.0
R0(config-router)#network 192.168.1.0
R0(config-router)#network 12.0.0.0
js

By: Sanchos

Sanchos — Wed, 23 Nov 2011 07:18:22 +0000

very helpful and clear!
but still would like to hear the answer to or get a link with answer to Deeone’s question…

By: Mohammed Wazeer

Mohammed Wazeer — Fri, 30 Sep 2011 07:26:41 +0000

Please let us know some more lab in RIP.
Very nice link .

Thanks & Regards,
Mohammed Wazeer

By: Reza

Reza — Mon, 26 Sep 2011 03:39:24 +0000

very nice :)

By: nc

nc — Thu, 15 Sep 2011 18:49:04 +0000

can anyone comment on GNS3 and Packet Tracer, I am new to both
GNS3 seems more powerful, if i load, say, a c1700 IOS, does it allow me to use other series feature or it is very specific ?
Packet Tracer seem no need to deal with IOS but I am having hard time to make it to work, (using version5.3) like the lab here. I also not able to make the Frame Relay cloud work. (although no problem for all commands)
Any good tutorial on Packet tracer ? thanks

By: Kalpit

Kalpit — Sat, 02 Jul 2011 16:38:25 +0000

Perfectly working !

By: rupul

rupul — Fri, 24 Jun 2011 19:40:26 +0000

I have been following this site since last year and I would really love to meet the admins and all those people who have a hand in creating such a wonderful site. This site has been of immense help to many of us… Thanks a lot. As usual like the other articles, this one was also of a great help to me…

By: Deeone

Deeone — Mon, 06 Jun 2011 09:56:24 +0000

Thanks 9tut for your help; please can you explain when we need to use “no auto-summary” and what “Discontiguous network” is ? because I notice no auto-sumarry command is always use in EIGRP.

By: 9tut

9tut — Sun, 10 Apr 2011 07:59:12 +0000

@jobin: In the tutorial I used both serial and FastEthernet because they don’t affect the configuration. We don’t need to configure clock rate on serial interface because in most modern Cisco routers, clock rate has already been set by default.

@tkay: You only need to use “no auto-summary” command if your network has discontiguous networks. In this tutorial if you add this command there will not have any effect on the network.
If you use the “no auto-summary”, RIP will send the subnet mask as well. But it gets the subnet mask of the outgoing interface so you just need to type 192.168.30.18

By: tkay

tkay — Tue, 01 Feb 2011 19:02:12 +0000

If I add the no-auto summary command in Rip V2 will this be incorrect on the CCNA exam if my Network is in a classful network? It doesn’t seem like it would hurt anything.

If this was a RIP V2 network interface address:

192.168.30.18 255.255.255.240

would I still write the network as: 192.168.30 and the no auto-summary?

Thanks

By: jobin

jobin — Thu, 20 Jan 2011 12:58:37 +0000

One question why the Routers R1 and R2 are interconnected using fast ethernet instead of serial interface? and why we are not configuring clock rate on serial interface?

By: jobin

jobin — Thu, 20 Jan 2011 12:55:38 +0000

The article is very simple and understanding. And the screenshots help you to understand it better and wont feel boring :)

By: R.A.

R.A. — Tue, 18 Jan 2011 09:17:08 +0000

very nice.