I am trying to configure OSPF on a Cisco 1720.
When I enter the command 'router ospf 1' instead of entering router config mode, the CLI stays at global config mode and no error is being displayed. I cannot continue with OSPF.
The IOS is version 12.2(3d) and OSFP is supported on this platform.
Is this a bug in the specific version? Does anybody know about it.
What is the name of the image you're running (not the version, but the name)??
I believe that in the low end platforms, OSPF is only supported in the "IP Plus" image. The name should be something like c1700-sy-..., instead of c1700-y-... for the plain "IP" image.
I don't think so. As the 1700 is not that low end. I have run successfully OSFP on 1600 series routers.
But this issue is getting quite interesting. Last night I rebooted the router and guess what? I was able to configure OSPF. But then show run stopped working.
I tried to enable buffered logging with 16384 KB but the router complained about not enough memory. 4096 was OK. (This sounds strange for a 16MB router). Anyways after doing this telnet stopped responding and now I cannot login to the router, even after 2 reboots.
Note that OSPF is running as a totally stubby area so memory consumption should be minimal.
It does sound like you have a memory problem, to me.... What happens when you run show run? Does it just do a show memory? Can you enable ospf and only put a single loopback in it, with no "real" interfaces, to see what it does then?