no rip update for networks 192.168.1-254.x

djshubi

hey all i hope that anyone can give me this answer becaouse im loosing it...

im trying to implement rip on my router and he send me an update only to one of the interfaces

fastethernet0/0 192.168.4.26 255.255.0.0
fastethernet0/1 10.13.31.1 255.255.255.0

router rip
version 2

network 10.0.0.0
network 192.168.0.0

the update is sent only via 10.13.31.1

but when i change the ip address fastethernet0/0 to 192.168.0.x it works....

someone can pls help me...???
thank you

EdTheLad

192.168.4.26 is a class C address, you are using an illegal /16 mask, Ripv2 doesnt support
masks shorter then the natural mask.

djshubi

so how can i solve this problam?

EdTheLad

Change fastethernet0/0 192.168.4.26 255.255.0.0 to have a mask 255.255.255.0

djshubi

thank you i will try this and let you know if it works...

PStefanov

djshubi wrote:

hey all i hope that anyone can give me this answer becaouse im loosing it...

im trying to implement rip on my router and he send me an update only to one of the interfaces

fastethernet0/0 192.168.4.26 255.255.0.0
fastethernet0/1 10.13.31.1 255.255.255.0

router rip
version 2

network 10.0.0.0
network 192.168.0.0

the update is sent only via 10.13.31.1

but when i change the ip address fastethernet0/0 to 192.168.0.x it works....

someone can pls help me...???
thank you

You have misconfigured the second network statement. Type network 192.168.4.0 instead.

Pavel

djshubi

thank you all very much nut i need to publish the network as class b or mask 16. i just put a secondery address of class c the network address and its magicly works..

thank you for everything....

Ahriakin

I thought RipV2 was classless (one of it's biggest improvements over v1)?

dtlokee

RIP v2 is classless, and will advertise a route regardless of the mask and class in use. The problem here is not related to the advertisement, but the network address in use. The problem is RIP expects a network address in the "network" command specified under the routing process. This allows advertisements to be sent on any interface matching the network address or a subnet of the network address, but not a supernet address, which is being used in this example.

Adding a secondary address with a network address or a subnet address of the classful network will allow rip to send updates onthe interface, but it will source them from the primary address of the interface.

Ahriakin

Ah, thanks. So essentially it's support for classless is hobbled in a way, yes it advertises classless subnets but it won't accept the entirety of class range as one subnet from the Network command even if that's desired.

djshubi

Actually someone told me there is another way to advertise the super net without secondery interface but he didnt tel me how....

so if someone here have another idea it will be great and again thank you all...