Stuck- trying to configure point to point connection

[Pravin]

Hi there,

Hope someone can help.

1: To gain as much experinece as possible, i'm trying to deploy a simple point to point routed network using ethernet interfaces and static routes (3 routers). I just can't get this to work. I've used all the commands I think should be used for this but it's just not working. I also tried to covert the three router to RIPv1 and RIPv2- this also isn't working for me.

2: I've tried to convert the 3 routers to create a serial back to back connection, again to no avail.

For the above, I telnet into the work labs.

Can someone provide details as to what the commands are, what order they should be applied etc for the above.

Grateful to anyone that can help.

Many thanks,

Pravin.

[lammle]

OK, well, if you have point to point, you don't need static, rip, or other routing protocols.

What exactly is not working? Let's start there.
Todd

[lildeezul]

Remeber when adding static routes, you have to do it on each and every router.
Can you tell us your configuration, how your routers are hooked up, and whats there ip address.

For example lets say router A s0 (192.168.10.1) connected to routers B s0 (192.168.10.2) and Router B s1 (192.168.20.1) connected to router C s0 (192.168.20.1)

Now for router A to be able to communicate with the remote router (C) then you would add a static route of just the network you want to communicate with (router C ip address) ip route [remote network] [remote's subnetmask] [exit-interface or net hop address]
ex: ip route 192.168.20.0 255.255.255.0 s0
or ip route 192.168.20.0 255.255.255.0 192.168.10.2

this would setup Router A, but then you have to do the same on Router C, but use the Router A's ip address
ex: RouterCconfig#) ip route 192.168.10.0 255.255.255.0 192.168.20.1

-------------------------
Now for rip

when enable rip, instead of using the remote network address you want to communicate with, you use your directly connected network to advertise ( becuase its Rip job to find out the remote networks)

in config mode for routerA type Router rip
Network [directly connected networks]
ex: router rip
network 192.168.10.0

And the same on router C

Router rip
network 192.168.20.0

-----------------
this is how you configure Static routes, and Rip...Hopes this helps.
I advise you to read this chapter over and over again, until your know it like the back of your hand. ( you should do this with all chapters)

[Pravin]

Thanks guys for your help,

This is what I was doing:
Router A
enable
conf t
line vty 0 4
password *******
exit
interface fast 0/1
IP Address 192.168.1.1 255.255.255.0

Router B
enable
conf t
line vty 0 4
password *******
exit
interface fast 0/1
IP Address 192.168.1.2 255.255.255.0

Router C
enable
conf t
line vty 0 4
password *******
exit
interface fast 0/1
IP Address 192.168.2.1 255.255.255.0

So on Router A to B- IP route 192.168.1.0 255.255.255.0 192.168.1.2
end.

Router A to C IP route 192.168.2.0 255.255.255.0 192.168.2.1
end.

Router B to C IP route 192.168.1.0 255.255.255.0 192.168.1.1
end.

I think this is right (so that Router A, B and C are now connecting together to make a simple network) but can you guys confirm?

-----------------------------------------------------------------------

For rip

Router A
enable
conf t
router rip
network 192.168.1.0
end

Route
Router A
enable
conf t
router rip
network 192.168.2.0
end

Again I think this is right but can you guys confirm?

Many thanks,

Pravin.

[lammle]

How are your routers connected?

if they are connected via a hub/switch, then all your FE's need to be in the same subnet....and no rip or static routing is necassary

How are these three routers physically connected?

Todd

[lildeezul]

if your router are connected like this:

router A-------------Router B-----------------Router c

then you dont need a static route on router A going to router B, becuase they are directly connected.
But you do need one on router A going to router C
here how it would go based on your config.

ip route 192.168.2.0 255.255.255.0 192.168.1.2
Becuase your next hop address is router B

I'll let you figure out what you have to do with C.

and with router B, you dont need any stick routes, because its directly connected to router A, and router B.

BUT OF COURSE THIS IS IF YOUR ROUTERS ARE CONNECTED LIKE THIS!!

like todd said. how is your routers connected?

[Pravin]

I'm connecting the routers directly together (no hub or switch).

A-------------B------------C--------------A

Thanks.

[lildeezul]

so basically you have a topology.

where router A is connected to b and C, and router B is connected to A and C, and router C is connected to B and A.

if this is the case then you wouldnt need routing implement, becuase all of the routers are directly connected.\

is this the case??

[crissa]

so basically you have a topology.

where router A is connected to b and C, and router B is connected to A and C, and router C is connected to B and A.

if this is the case then you wouldnt need routing implement, becuase all of the routers are directly connected.\

is this the case??

Hello,
lets call this a triangle. It is true, router A sees router B and C. But router A knows nothing about the connection between B and C (on so on for router B and C). Router A sees only his directly connected interfaces to router B and C, he doesn't see the interfaces of the connection between router B and C!

HTH!
Bye, Tore