Cisco 3750 - configure to mimic multi location scenario

Question

Good morning.

For starters, I am less than a noob with cisco products. I can access, so basic trunking for our nec phone systems, etc.

I have a 3750 that I'd like to configure to mimic a multi location scenario. I have read some refer to as inter vlan routing.

VLAN 1: 172.30.1.0/24

VLAN 21: 172.30.21.0/24

VLAN 2: 172.30.2.0/24

etc I was planning to also ensure GW was 172.30.xxx.1 respectively for each VLAN.

VLAN's would need to communicate with each other.

Thoughts?

Thank you in advance. (PS I have my boss a cisco whiz to assist, but his duties really limits his time assisting me)

Terry

Answer 1

First, you should probably not use VLAN 1 - it's generally not recommended, or if used, used for network device management traffic only. But, to answer your question, yes, you'd be using inter-vlan routing on the Cisco switch. See config below:

! enable layer-3 routing
ip routing

! declare vlans
vlan 1
  name my vlan 1
vlan 21
  name my vlan 21
vlan 2
  name my vlan 2

! turn on the SVI for these three vlans.
int vlan 1
  ip address 172.30.1.1 255.255.255.0
int vlan 21
  ip address 172.30.21.1 255.255.255.0
int vlan 2
  ip address 172.30.2.1 255.255.255.0

! put ports into whatever vlans they need to be in.
! example, ports 1-4 vlan 1, ports 5-8 vlan 21, ports 9-12 vlan 2
int range g1/0/1 - 4
  switchport mode access
  switchport access vlan 1
int range g1/0/5 - 8
  switchport mode access
  switchport access vlan 21
int range g1/0/9 - 12
  switchport mode access
  switchport access vlan 2

Answer 2

In Cisco catalyst 3750 switch configure Switch virtual interface (SVI) For 3 Vlans and enable " iP routing ". Communication among different Vlan routing is enable .hence different Vlan can communicate .

For example in cisco 3750 multi layered switch

Switch(config) # interface Vlan 1 Switch(config)#ip address 172.30.1.1 255.255.255.0 Switch(config)#no shutdown

Switch(config)# interfàce Vlan 21 Switch(config)#ip address 172.30.21.1 255.255 .255.0 Switch(config)#no shutdown

Switch(config)# interfàce Vlan 2 Switch(config)#ip address 172.30.2.1 255.255.255.0 Switch(config)#no shutdown

Switch(config)# ip routing