VLAN Configuration not pinging to other terminal in different switch

[cpdl2325]

I already created subinterfaces, encapsulate, setup each ip address of terminals, the connection between switch and router is on trunk mode but I still can't ping other terminal with the same vlan on other switches(I can ping vlan 10 terminals on the same switches but not terminals from other switches)

[balaji.bandi]

Make sure you vlan created on all other switches and they are allowed in the trunk (i know you mentioned) - i would like to re-check.

show spann vlan X  from all switches make sure you able to reach.

you are not able to ping other terminal (check any firewall) - does the terminal able to ping own gateway ?

can you post show ip interface brief and show run from Router and other devices.

[cpdl2325]

here is the ip 

the first ping was terminal 1 to terminal 3 which are both vlan 10 and the second ping was from terminal 1 to terminal 7 which are also vlan 10 but in different switches. If it helps to identify I also attach the pkt file of from my screenshot

[balaji.bandi]

I generally do not use PT - but looking at your output you have on the router only 1 interface configured for all the sub-interface, but interface may be only connected SW3

the configuration need to applied between SW1 to Router 2911 and SW2 to Router 2911 - that i do not see as per your output.

But if this routing ports you can not extend the Layer 2 VLAN in to other segment, that to work.

Router should be done using BVI if you like to hve Layer 2 or you need get in to Layer 3 segment with Routing in place for this to work.

once you make mind to go with BVI then you can have BVI with sub-interface.

[Flavio Miranda]

@cpdl2325 

  Check a few things and if you do not fix the problem, attach the pkt file here and let me see. You need to zip it first

-check if the terminals have the proper default-gateway configured on it.

-Check with you created the vlan on the switch with the command "vlan xxx"

-Dont configured IP address on the interface you used to create the subinterface, leave it as layer2 only.

-Make sure the switch interface for terminals is correct.

[cpdl2325]

here is the zip file I really appreciate the help

[Flavio Miranda]

The problem was, you configured the interfaces of the router and created sub-interface on the interface Gi0/0;

if you create subinterface on the Gi0/0 for each vlan like that, you can´t connect the switches in the interface G0/1 and Gi0/2. You need to connect one switch to the interface Gi0/0, like I did below, and connect the remaining switches to this one.

You can test the file I am attaching and it is working. The topology is called Router in a stick.

If you want to connect each switch to individual interface on the router, you dont use subinterface, you configure IP address on each router´s interface.

Hope I could explain.

[cpdl2325]

Can you elaborate more on configuring ip address on each interface of the router. I really appreciate the effort and thank you for fixing it. I'm just curious now and wanted to learn on how to configure it using the topology that I posted earlier.

So I'm gonna remove the sub interface then assign ip to each interface in the router? and do I also need to replace the default gateway on each terminal?

[Flavio Miranda · Accepted solution]

You dont need to replace the default gateway, they must be the same.

You can see the file attached. I only fixed the Router and the switch Sw2 and Sw3 and Terminal 1 and Terminal 6. You can ping from terminal 1 to 6 and vice versa.

What you need to do is:

On the router, remove the subinterfaces and add the IP address on the "physical" interfaces directly.

Connect each switch to its respective interfaces on the router.

Change the interface Fa0/1 on the switch side to Access on Vlan 1.

Bring the vlan 1 UP on the switch

conf t

int vlan 1

no shut

Then, assign the vlan1 to the interface where the terminal is connected.

Do it for all terminal and switches.

====================================================================

If you want to keep working with vlan 10, 20 and 30 it is also possible. For that, you need to create one subinterface for each Router´s interface.

Example

Interface GigabitEthernet0/0.10

ip add 192.168.10.1 255.255.255.0

Interface GigabitEthernet0/1.20

ip add 192.168.20.1 255.255.255.0

Interface GigabitEthernet0/2.30

ip add 192.168.30.1 255.255.255.0

Now, you can connect each switch to the respective interface. Keep the config on the switch side as is. Trunk on interface Fa0/1 and keep Terminal on respective interfaces.

[Flavio Miranda]

Here is the final scenario. Keeping your topology and working with subinterface. This is probably what you want.

[cpdl2325]

Thank you so much I now get it I really appreciate the help.