Communication between two VLAN'S

[ankitohc]

Hello Team,

Can two different VLANs on the same switch communicate without trunking? 

Is it possible?

For an example fa/01 to 10 vlan 10 and fa/11 to 20 vlan 20

Ankit

[MHM Cisco World]

Sure yes 

Only 

Ip routing <<- this make l2 sw l3 sw ( you need assing ip for vlan svi in sw' the svi IP must be in same subnet of pc)

What you need to add 

[Flavio Miranda]

Hi @ankitohc 

 In a layer3 switch is possible but you need to create interface vlan for each vlan. For exampl

Int vlan 10

Ip address 192.168.10.1 255.255.255.0

Int vlan 20

Ip add 192.168.20.1 255.255.255.0

ip routing

Then, you need to assign ip address and gateway to PC. The gateway must be the ip address for the interface vlan.

 If your switch have no layer3 cabability, you are going to need a router.

[ankitohc]

Okay so it's possible but that is not a standard practice that we follow in day-to-day operations activities?

[Flavio Miranda]

Actually it is. Most companies now a days have layer3 switch. 

[ankitohc]

But we usually set the router IP address as the default gateway, not the switch, right?

[MHM Cisco World]

That why I mention it depend

If you have sw and router or fw then gw is router or fw 

No need inter vlan in sw 

[MHM Cisco World]

If you have three layer data center 

The access layer no need inter vlan 

The distribute or core layer need inter vlan.

So you need to know how config inter vlan and use it when you network need it 

[Flavio Miranda]

In the scenario I describded,  there will be no router. The layer3 switch do both function.

But, if you are studying for CCNA certification,  for example,  is is very usuall they do this using a router and a switch.  For leaning purpose, they prefer keep router doing routing and switch doing switching. Thats why you may see the router as the gateway.

[MHM Cisco World]

It depends 

[ankitohc]

How to communicate with PC0 to PC3? 

PC0 is on VLAN 10 and PC3 is on VLAN 20

[MHM Cisco World]

Many issue in your network' first vlan10 and vlan20 have same subnet.

What is ip between sw and router?

And lastly I am sorry  I can not help you in pkt' may be other can help you.

Thanks 

MHM

[ankitohc]

its okay I will figure it out myself... thank you for your help

[Flavio Miranda]

@ankitohc  you using the same network 192.168.1.0 255.255.255.0 . This is a problem.

 You need to assign different networks for each vlan example

Vlan 10 - 192.168.10.0

Vlan 20 - 192.168.20.0

Then, you put the port between switch and router as trunk

On the router, you need to configure subinterface and each subinterface will represent one vlan.

 You can send this PacketTracer file and I can show you. You just need to zip the file first.

[ankitohc]

Please see attached pkt file in zip file..