no routes shown, but can ping !!!!

i've connected several routers thru ethernet switch(serial is disabled/no ip) and tried RIP, RIP2 and default routes. the problem is, i can ping every interface, but doesn't show any routes when sh ip route is run.

is this normal ?. or routing only works on serial interface ?. or do i need to run any other commands ?.

thanks in advance.

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Comments

!30

no route ? it have to show something , it's spooky

EdTheLad

macwhizard wrote:

i've connected several routers thru ethernet switch(serial is disabled/no ip) and tried RIP, RIP2 and default routes. the problem is, i can ping every interface, but doesn't show any routes when sh ip route is run.

is this normal ?. or routing only works on serial interface ?. or do i need to run any other commands ?.

thanks in advance.

If all the routers are connected to the same subnet there wont be routes.Try create a loopback interface 100.100.100.100 255.255.255.255 and advertise it with rip, router rip, network 100.0.0.0, it will appear in the other routers tables.

macwhizard

ip route shows routers own ip's. but it shows full details when cdp is run

really spooky

routers run IOS ver 11, 12 & 12.2.

marlon23

You should see route to directly connected network pointing on router's ethernet interface. If no, you have a problem.
Router will put directly connected networks to routing table, if:
- interface is up/up
- inteface has correct IP assigned

If routers are showing directly connected networks in routing table, it is normal, nothing spooky about it (default behavior, routing for directly connected networks). You cannot see any RIP routes in routing table becouse there is nothing to advertise for RIP and nothing new to learn in that network. As ed_the_lad sad, try loopback interface and you'll see that this new route will be propagated and you'll see it on all routers as RIP ("R") route.

And before you start doing labs, you should know at least some basic theory.

Danman32

But would SH IP Route show directly connected networks if only one interface is connected and up? I don't have a Cisco router that I could try this with. I would suspect it would though.

macwhizard

i had loopback setup on all ruters, but it didn't show not even subnets. it started working well after i reloaded IOS on all routers. strange.

PCHoldmann

Supposing that the interfaces a re on different networks (i.e. pinging a loopback from another router), this may be a case of proxy ARP. Basicaly, a router can answer ARP requests on behalf of another host. Check out http://www.cisco.com/en/US/customer/tech/tk648/tk361/technologies_tech_note09186a0080094adb.shtml

Peter

pannupandit

thanx Bro...
was a good link