hi everyone. I'm trying to configure a brand new 2811 to route packets between vlans. the question is: is it possible to do it without the switching hwic? the seller said it was possible, but I'm not so confident in this. will I have to buy the 4 port hwic integrated switch module to do it?
Yes you can !
I have done so several time on all C28xx platforms, and older routers aswell.
you need to do subinterfaces before you can add the encapsulation:
(Sample output from real router C2801)
no ip address
encapsulation dot1Q 10
ip address 10.10.10.10 255.255.255.0
encapsulation dot1Q 20
ip address 10.10.20.20 255.255.255.0
show ip route:
10.0.0.0/24 is subnetted, 2 subnets
C 10.10.10.0 is directly connected, FastEthernet0/1.10
C 10.10.20.0 is directly connected, FastEthernet0/1.20