topic Re: Problem ping inter vlan in Switching

Problem ping inter vlan

JbOne — Fri, 08 Mar 2019 20:17:51 GMT

Hi !

I'm sorry, i'm french and i don't speak English very well. I'm going to try explicated my problem.

Currently, i create one project with the software Cisco Packet Tracer, the pattern below show you my network topology.

The switch 3560-24PS is layer 3, his configuration is the following one :

- Vlan 30 = 192.168.30.1 255.255.255.0
- Vlan 40 = 192.168.40.1 255.255.255.0
- Vlan 50 = 192.168.50.1 255.255.255.0

Ports FastEthernet AccessMode:
- 1 = Vlan 30
- 2 = Vlan 40
- 3 = Vlan 50

IP Route :
- 192.168.30.0 255.255.255.0 192.168.30.1
- 192.168.40.0 255.255.255.0 192.168.40.1
- 192.168.50.0 255.255.255.0 192.168.50.1

Ip Routing = Activate

The computers :
- 1 connected in port 1 with IP = 192.168.30.10 255.255.255.0
- 1 connected in port 2 with IP = 192.168.40.10 255.255.255.0
- 1 connected in port 3 with IP = 192.168.50.10 255.255.255.0

My problem is i can't ping the laptop PC-Indus with PC-Bur and i don't understand.

Can you help me please ?

Best regards.

Johann

Re: Problem ping inter vlan

Meheretab Mengistu — Sat, 07 Oct 2017 17:39:05 GMT

Hi Johann,

Please share the output of "sh run" from your switch.

Re: Problem ping inter vlan

Georg Pauwen — Sat, 07 Oct 2017 18:12:08 GMT

Hello, bonjour,

post the Packet Tracer file, we can then have a look at your project ourselves in Packet Tracer...

publiez le fichier Packet Tracer, nous pouvons ensuite jeter un oeil à votre projet nous-mêmes dans Packet Tracer ...

Re: Problem ping inter vlan

JbOne — Sat, 07 Oct 2017 18:35:32 GMT

Thank you for your answers !

I can't upload my project, he don't accept the extension pkt.

Can you tell me how to do ?

Thank you.

Best regards.

Johann

Re: Problem ping inter vlan

Georg Pauwen — Sat, 07 Oct 2017 18:44:50 GMT

Hello,

rename the .pkt file to a .jpg file. They recently changed the forum so you cannot directly upload .pkt files anymore...

Re: Problem ping inter vlan

JbOne — Sat, 07 Oct 2017 18:52:57 GMT

Ok ! I come rename the extension file pkt as jpg.

Thank you very much.

Re: Problem ping inter vlan

Georg Pauwen — Sat, 07 Oct 2017 19:22:02 GMT

The problem is simply that the defaut gateway on PC-Bur needs to be 10.100.59.7, while you have set it to 10.100.59.10. Change it to 10.100.59.7.

Re: Problem ping inter vlan

JbOne — Sat, 07 Oct 2017 19:33:47 GMT

Thanks Georg Pauwen !

I just try and it works but i have a other problem, if i want pinger Laptop-PT API from Laptop-PC-PHIL it dosn't work.

Can you help me please ?

Best regards.

Johann

Re: Problem ping inter vlan

Georg Pauwen — Sat, 07 Oct 2017 20:03:41 GMT

Check the link between Router_MTR (interface FastEthernet0/0) and Switch_MTR (interface FastEthernet0/3). Both are layer 3 devices, so you will need a common subnet shared between those two interfaces.

Re: Problem ping inter vlan

JbOne — Sat, 07 Oct 2017 20:14:42 GMT

Thanks for your answer,

I don't understand very well your sentence "Both are layer 3 devices, so you will need a common subnet shared between those two interfaces."

The switch and the router have the same subnet, i don't unterstand ...

Best regards

Re: Problem ping inter vlan

Georg Pauwen — Sat, 07 Oct 2017 20:38:33 GMT

Change your Router_MTR configuration as below:

interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.59
encapsulation dot1Q 59
ip address 10.100.59.10 255.255.255.0

ip route 192.9.210.0 255.255.255.0 10.100.59.7

Re: Problem ping inter vlan

JbOne — Sun, 08 Oct 2017 06:29:20 GMT

Good morning Georg Pauwen,

I try and you'll be the first to know, sorry for tomorrow tonight, it was late and I preferred to sleep.

Thanks.

Johann

Re: Problem ping inter vlan

JbOne — Sun, 08 Oct 2017 07:09:14 GMT

Here is my information feedback,

I put one capture below with 2 area (Lan 1 and 2), in Lan 2, PC-Bur, API, PC-Indus and Switch-MTR can comunicate via a different subnetwork but they can't comunicate to Router-MTR.

In Lan 1, PC-PHIL can't communicate to Switch-MTR but work with Router-MTR.

The configuration that you give seems correct, i have good understand the encapsulation but i don't understand why i does not work ?

The network is not easy.

Thank you for you help.

Re: Problem ping inter vlan

Georg Pauwen — Sun, 08 Oct 2017 07:56:51 GMT

Bonjour,

Essayez-vous simplement d'avoir une communication complète entre tous les appareils, ou existe-t-il des exigences particulières pour votre réseau? Il existe de nombreuses façons d'obtenir une connectivité complète ...

Re: Problem ping inter vlan

JbOne — Sun, 08 Oct 2017 08:19:51 GMT

Bonjour,

Vous êtes français ?

@Georg Pauwen wrote:

Bonjour,

Essayez-vous simplement d'avoir une communication complète entre tous les appareils, ou existe-t-il des exigences particulières pour votre réseau? Il existe de nombreuses façons d'obtenir une connectivité complète ...

Oui effectivement je dois avoir une communication complète entre tous les appareils (distant et dans le même lan).

Il y a donc plusieurs sous-réseau qui sont gérés par un seul et même switch qui fait la passerelle vers le routeur.

Une machine A dont son IP est 10.100.59.87 pourra communiquer vers une machine dont l'IP est 192.9.210.34 dans le même LAN. Une personne dont l'IP est 10.150.88.97 dans un LAN différent pourra aussi communiquer vers les machines mentionnées précédemment. C'est pour cela qu'il y a 2 routeurs mais ça je pense que vous l'avez compris ?

Je sais pas si j'ai été assez précis dans mes réponses, pour être honnête, je suis purement auto-didacte, je débute donc mille excuses si je n'emplois pas les bons termes ou autres.

En tout cas, c'est très gentil de votre part de m'aider.

Cordialement.

Johann

Re: Problem ping inter vlan

Georg Pauwen — Sun, 08 Oct 2017 11:00:13 GMT

Non, mais je parle un petit peu de français. Et je sais comment utiliser Google traduction...:)

La configuration ci-dessous du routeur Router_MTR devrait être suffisante; il y avait un problème avec le routage statique. J'ai marqué les changements (en gras😞

Current configuration : 846 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router_MTR
!
ip cef
no ipv6 cef
!
interface FastEthernet0/0
ip address 10.100.59.10 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
shutdown
!
interface Serial2/0
ip address 10.150.80.10 255.255.255.0
!
interface Serial3/0
no ip address
clock rate 2000000
shutdown
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
ip classless
ip route 10.150.88.0 255.255.255.0 10.150.80.20
ip route 192.9.210.0 255.255.255.0 10.100.59.7
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login

Re: Problem ping inter vlan

JbOne — Sun, 08 Oct 2017 12:24:44 GMT

Thanks Georg Pauwen,

I continu of speak english even if I am bad 😉

I did what you tall me but no it work, watching the running config, i have looked at your configuration and i noticed there was an error in my config.

Before :

interface FastEthernet0/0.59
encapsulation dot1Q 59
ip address 10.100.59.10 255.255.255.0

After :

interface FastEthernet0/0.59

no ip address

interface FastEthernet 0/0

Ip Address 10.100.59.10 255 255.255.0

Now it works correctly.

Thanks very much for your help, it is really nice from you.

Best regards.

Johann