Does Cisco 1721 supports inter-vlan routing? I have 4 different images taken from "Software Advisor" on CCO. Those images suggested by software advisor do show support of 802.1Q vlan/trunking on 1721, but when I load those images on 1721, I can create fastethernet subinterface, but there's no option for encapsulation dot1q or isl.
Can anyone suggest if 1721 can support intervlan routing? If yes, then with which software/hardware.
I tried Enterprise base 12.3(14)T3, 12.3(14)T5, 12.4(5) IP Plus, all with same results. Under subinterface I can see the encapsulation command, but when I enter "encapsulation ?" the router says unrecognized command. If I hit enter after typing encapsulation, then it says incomplete command. And this happens with all of above images (which I believe are quite latest ones).
I actually had exactly the same problem as you have described (1721 as well) until I downloaded NON-CORRUPT version of image. Cisco TAC engineer has eventually suggested that and that worked. So, make sure that you are using enough RAM and flash and (!) proper, non-corrupt image.
By the way, one more comment, I'm trying to create intervlan routing using the fixed FE port on 1721. May be this particular port does not support that. it may require installing a separate FE module in it. But need to see comments if this is true.
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