16 port network module configuration

[csross]

I am getting the 16 port network module for a 3640. I want to create separate networks (vlans) and route between on the switch ports. Does anyone know how to accomplish this? The documents do not specify?

Thanks

[Georg Pauwen]

Hello,

I assume you are talking about the NM-16ESW ? You can just create your VLAN interfaces and assign the switchports on the module to the respective VLANs. Let´s say you want to create VLAN 10, 20, and 30, this is what the configuration would look like (the IP addresses in this example are just examples, obviously):

interface VLAN 10

ip address 192.168.10.1 255.255.255.0

!

interface VLAN 20

ip address 192.168.20.1 255.255.255.0

!

interface VLAN 30

ip address 192.168.30.1 255.255.255.0

!

interface FastEthernet0/1

switchport mode access

switchport access vlan 10

!

interface FastEthernet0/2

switchport mode access

switchport access vlan 20

!

interface FastEthernet0/3

switchport mode access

switchport access vlan 30

!

and so on...

HTH,

Georg

[csross]

Thanks. My Ethernet interface on the 3640 will connect to a cablevision router and get its address via dhcp. The 3640 will be giving address via dhcp to a 10 network which will be one of the vlans. It will also be using NAT to gain public network access for that network. Do you believe in this config I can do that? One last thing, do you believe it will be slow since the routing doesn't take place in the module but the router?

thanks so much