Routing between subnets on separate routers

[Matt Cornall]

Hi guys,

Little stuck with a router config, can't get the networks to speak to each other - new to this but can't see why this shouldn't work!

Router1

Fa0/0 connected to a switch and advertising 10.1.1.0/24 (10.1.1.1 assigned)

Fa0/1 connected to Router2 via 10.9.9.8/31 (10.9.9.9 assigned)

Router2

Fa0/0 connected to a switch and advertising 192.168.1.0/24 (192.168.1.1 assigned)

Fa0/1 connected to Router1 via 10.9.9.8/31 (10.9.9.10 assigned)

All ports are configured and up, and I can ping from hosts to routers on both sides and between routers but the traffic won't cross routers from 192.168.1.0/24 into 10.1.1.0/24 over the 10.9.9.8/31, what am I missing?

Regards,

Matt

[acampbell]

Hi Matt,

Have you actually added the static routing you require to route accross the network

Router 1
!
ip route 192.168.1.0 255.255.255.0 10.9.9.10 name route-to-router2
!

Router 2
!
ip route 10.1.1.0 255.255.255.0 10.9.9.9 name route-to-router1
!

Also will you change the mask on subnet 10.9.9.8/31 tp 10.9.9.8/30 (255.255.255.252)
if you want to use .9 & .10

Regards
Alex

[Matt Cornall]

Says "invalid next hop (it's the router)

Please see attached topology

I can ping;

From PC1 to 10.1.1.1 + 10.9.9.9

From PC0 tp 192.168.1.1 + 10.9.9.10

From Router0 to Router1

From Router 1 to Router0

I Cannot ping;

From PC1 to 10.9.9.10

From PC0 to 10.9.9.9

Basically whenever the connection passes between routers

[acampbell]

Hi Matt,

Looking at your diagram

You need to get the masks sorted out on both routers

Your router configs should be:-

Router 0
!
host router0
!
int fas0/0
desc *** *** ROUTER 0 PC LAN *** ***
ip add 10.1.1.1 255.255.255.0
no shut
!
int fas0/1
desc *** ROUTER 0 to ROUTER 1 WAN ***
ip add 10.9.9.9 255.255.255.252
no shut
!
!
ip route 192.168.1.0 255.255.255.0 10.9.9.10 name route-to-router1
!

Router 1
!
host router1
!
int fas0/0
desc *** *** ROUTER 1 PC LAN *** ***
ip add 192.168.1.1 255.255.255.0
no shut
!
int fas0/1
desc *** ROUTER 1 to ROUTER 9 WAN ***
ip add 10.9.9.10 255.255.255.252
no shut
!
!
ip route 10.1.1.0 255.255.255.0 10.9.9.9 name route-to-router1
!

Make sure that the PCs have the local router address as their default gateways

Regards
Alex

[Matt Cornall]

Hi Alex, 

Thanks for getting back to me, the subnets look correct to me?

10.9.9.8/30 = 

10.9.9.8 Network

10.9.9.9-10 hosts (assigned)

10.9.9.9.11 Broadcast

Doesn't it?

/30 = 255.255.255.252