InterVLAN communication between VLAN1 and new VLAN

[emmanuel_s]

my existing LAN set up have a subnet: 153.117.182.0/24. It is a flat network...no VLAN configured. I want to configure a VLAN, say VLAN 2 with a different subnet: 153.117.183.0/28. VLAN 2 needs to communicate to file servers belonging to the subnet 153.117.182.0/24.

These file servers should be both accessible to the two subnets VLAN1 hosts and VLAN2 hosts. Traffic from VLAN2 is only within VLAN2 and VLAN1..no outside traffic.

I have a core CAT3550 L3switch where I plan to set up as a vtp server. Create VLAN2. At this switch, the file servers are connected.

Another switch, CAT2960, is cascaded and connected via trunk(802.1Q) to CAT3550.

At CAT2960, I have configured 4 ports for VLAN 2 and 1 port for trunking to CAT3550.

-Please help me to verify if my design is feasible.

-Is my assumption correct that native/default VLAN 1

(in my LAN's case my host and server subnet--153.117.182.0/24) can communicate to VLAN 2 subnet--153.117.183.0/28

please refer to the attached text file for my proposed config. Thanks in advance!

[smothuku]

Hi Emmanuel ,

Configuration is as below according to your requirement :

3550 :

Ip routing

vtp domain cisco

vtp passord cisco

vtp mode server

interface Vlan1

ip address 153.117.182.3 255.255.255.0

!

int vlan 2

ip address 153.117.183.1 255.255.255.240

no shut

end

interface FastEthernet0/48

description ***connecting to 2960 Switch***

switch port trunk encapsulation dot1q

switchport mode trunk

2960 switch:

vtp domain cisco

vtp passord cisco

vtp mode client

int vlan 1

ip address 153.117.182.4 255.255.255.0

no shut

end

int fa0/1

Description**connecting to 3550 ***

switch port trunk encapsulation dot1q

switchport mode trunk

exit

ip deafult-gateway 153.117.182.3

as there is a trunk b/n both the switches you can place few hosts in vlan 1 on 2960 switch if required.

Thanks,

Satish

[emmanuel_s]

Hi Satish,

Thanks for your reply! Just to clarify, so in these configs, vlan2(153.117.183.0/28) can communicate to servers in vlan1(153.117.182.0/24) and vice versa right?

[smothuku · Accepted solution]

Hi ,

Both are directly connected subnets so Vlan 1 and Vlan 2 will communicate with each other.

Thanks,

Satish

[emmanuel_s]

HI Satish,

Thank you very much for your help!

Emman