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Inter-vlan routing

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i create 3 vlan?s ( vlan2, vlan3, vlan 4) in 2 catalyst 3550( one is server and other is client) and assign a range of ports. I use the same network id: 192.168.33.0 and already made trunking between the switches. The pc?s in the same vlan can connect with each other.

My question is, how to configure inter-vlan routing to make vlan 2 communicating with vlan 3?

thanks

Topic

Clarifications

In reply to Inter-vlan routing

Clarifications

IP routing

In reply to Inter-vlan routing

The only way I’ve seen this done is by using a different subnet for each VLAN, assigning IP to each VLAN interface accordingly, and you can then enable routing in the 3550 to route between the subnets.

Inter- Vlan Routing

In reply to Inter-vlan routing

You have create three Vlan, vlan2,vlan3 and vlan4. you assign the ip range for all three vlan like that vlan 2 start from 192.168.33.1-50/24 and vlan 3 start from 192.168.33.51-100/24 and vlan 4 start from 192.168.33.101-150/24.
Switch (configt)#
Switch (configt)#int vlan 2
ip address address 192.168.33.1 255.255.255.0
Switch (configt)#no shutdown
Switch (configt)#exit
Switch (configt)#int vlan3
Switch (configt)#
ip address 192.168.33.51 255.255.255.0
Switch (configt)#no shutdown
Switch (configt)# exit
Switch (configt)#ip routing
Switch (configt)#router rip
Switch (configt)#network 192.168.33.0

Subnets

In reply to Inter- Vlan Routing

I would either
(a) If you need to stick with 33 for the third octet in the ip address, change the subnet mask to 255.255.255.192. That would give you
192.168.33.0 – 192.168.33.63
192.168.33.64 – 192.168.33.127
192.168.33.128 – 192.168.33.191

(b) Keep the 255.255.255.0 mask and change the third octet in the ip address for 2 of the subnets
192.168.33.0 – 192.168.33.255
192.168.34.0 – 192.168.34.255
192.168.35.0 – 192.168.35.255

intervlan routing

In reply to Inter-vlan routing

for inter vlan routing to work each vlan should be in a different network.
first configure the vlans 2,3,4 in three different networks and now as you have already enabled trunking between the two switches create subinterfaces on the trunk ports and enable routing on the sub interfaces.

Do it Cisco Way

In reply to Inter-vlan routing

The following article explains how you can do that with the devices similar to yours:

http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a008015f17a.shtml

If you need general information for InterVlan Routing then go to:

http://www.cisco.com/en/US/docs/switches/lan/catalyst5000/hybrid/routing.html#wp29604

Good Luck !

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