CISCO Code for 2821

I am trying to configure my router (CISCO 2821) with a couple of VLANs

I have enabled the VLANs (844 and 845) (it wouldn't let me create anything over (1000) ISP wanted us to use 3795 and 3529..Anyhow avoided issue by getting lower numbered VLAns.

So, I create the VLANS and then go to int gig0/0 and switchport and switchport trunk mode however, it will not take any of the commands. I have been advised I need to get the CODE from CISCO that allows layer 2 as well as layer 3 functionality? is this so? And what do I order?

Here is a look at what I am getting from the commands;
VLAN ISL Id: 844
    Name: CDS_internet-CCT_ID_02813BI28001
    Media Type: Ethernet
    VLAN 802.10 Id: 100844
    State: Operational
    MTU: 1500

  VLAN ISL Id: 845
    Name: CDS_MLS-CCT_ID_13560-E1G2260
    Media Type: Ethernet
    VLAN 802.10 Id: 100845
    State: Operational
    MTU: 1500

 

now I got to config t and then Int gig0/0 for the switchport command...See results

corerouter02(config-if)#switchport
                                        ^
% Invalid input detected at '^' marker.
and then back out one layer
 

corerouter02(config)#switchport
                                      ^
% Invalid input detected at '^' marker.

Router version is attached...

Thanks a bunch

Brent
2821version.TXT