VLAN on 3750

[md_ani]

Hi,

Just a simple config help require.

I am having a Catalyst 3750 (L3). My 5 Servers are connected to this L3 Switch. This L3 swith is connected to 2950 (L2) and this 2950 is connected to my Router. I just want to create a VLAN on L3 only for these Servers. I don't want to create VLAN on L2 switch. Pls explain me a sample config as per this scenario. I'll be thankfull to u all.

Ip Address of Router 172.18.100.1/22 & Server are like 172.18.100.55/22 to 172.18.100.60/22

Pls explain the required IP Routes also.

Anis

[balajitvk]

In 3750,

interface GigabitEthernet1/0/1

description *** Server 1 ***

switchport access vlan 1100

switchport mode access

!

interface GigabitEthernet1/0/2

description *** Server 2 ***

switchport access vlan 1101

switchport mode access

!

interface GigabitEthernet1/0/3

description *** Server 3 ***

switchport access vlan 1102

switchport mode access

!

interface GigabitEthernet1/0/4

description *** Server 4 ***

switchport access vlan 1103

switchport mode access

!

interface GigabitEthernet1/0/5

description *** Server 5 ***

switchport access vlan 1104

switchport mode access

!

interface GigabitEthernet1/0/12

description *** Router ***

switchport mode trunk

!

In 2950,

interface FastEthernet0/1

description *** connected to router ***

switchport mode trunk

!

interface FastEthernet0/2

description *** connected to 3750 ***

switchport mode trunk

!

allow the default gateway to point router's interface ip address.

[md_ani]

Dear Balaji,

Thanx for ur quick reply. One more question, will this configuration increase my server security. If not pls suggest some alternate as per my setup.

Anis

[balajitvk]

Since ur separating each server traffic in each vlan it will be secure in your lan network. But you have to configure your router in such a way to protect your lan from outside.

[md_ani]

Dear Balaji,

Is it neccessary to configure 2950 for Trunk as I am having some problem in accessing this. Will my VLAN work in that case.

Thanks in advance.

Anis

[balajitvk · Accepted solution]

Yes, it should be, becz it has to carry different VLAN traffic.

Balaji. V

[md_ani]

Hi balaji,

Is there any Advantage/DisAdvantage of creating separate VLANs for different servers. Can we include all the servers in a single VLAN. Pls suggest Ad/Dis Ad.

Anis