Question : Help needed with Cisco 1721/WIC4ESW setting up a VLAN

Hi,

I have a Cisco 1721 router and the 4-port 4ESW WIC in the back.

I have 4 servers that will form a test network.

What I want to do is connect the 4 test servers (one in each port of the 4ESW) and have them as a VLAN - demarked from my production LAN.

Then I just need to be able to route between the the VLAN and LAN

The router's ethernet port will be plugged into the LAN.

Can anyone help me with the config.

Answer : Help needed with Cisco 1721/WIC4ESW setting up a VLAN

Is there any reason you want to block UDP, specifically? Broadcasts will already be contained to the VLAN, so you don't have to worry about them bleeding onto your production LAN. If you really, really want to block all UDP traffic from the VLAN to the LAN, do:

ip access-list 101 deny udp 10.220.0.0 0.0.255.255 any
ip access-list 101 permit ip any any
interface fastethernet0
   ip access-group 101 out

If you want to block more traffic from passing between the LANs, you'll need to define with specificity what sort of traffic you want blocked and what sort of traffic you want to allow.