Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
Community Member

3845 - 4-Port Switch Module Question

Hello Everyone,

We're getting a new T3 connection and a Cisco 3845 router with a HWIC-4ESW (4-port switch module).

Would it be possible to simply plug in 3-4 devices into the 4-port switch and assign them public IPs that we get from our provider?

We do something similar already. We have a 2811 with a T1 connection. The 2811 has two built-in ethernet ports. I plugged in one server on one port and other server on the other port. Both have public IPs and everything works great.

Would having the 4-port switch on the 3845 just give me additional ports to plug in more devices?


Hall of Fame Super Gold

Re: 3845 - 4-Port Switch Module Question

The HWIC-4ESW is a Layer 2 switch. You can, however, assign each ports to a VLAN and each VLAN has their own IP address.

If you want a routed port(s), you should be looking at the HWIC-1FE OR HWIC-2FE.

Data Sheet for the HWIC-1FE & HWIC-2FE:

Hope this helps.

Community Member

Re: 3845 - 4-Port Switch Module Question

Would the HWIC-1FE & HWIC-2FE be the equivalent of the two built-in ethernet ports on the 2811?

If that's the case, I might go with that approach. I'm familiar with configuration of assigning IPs to those type of interfaces.

I guess it would be question if the HWIC-4ESW gave me any more flexibility on bandwidth control, etc?

CreatePlease to create content