Static routing dont know whats the problem

[Lukaskasc]

Hey i have to submit a class project today can anyone can help me solve the problem with static routing? 

The help would be very much apprieciated :)

Adding the project in zip file because i cant post in other format

[Georg Pauwen]

Hello,

nots sure what the requirements are, but try the below:

M1

ip route 0.0.0.0 0.0.0.0 Serial2/0

M2

ip route 172.16.182.192 255.255..255.192 Serial2/0

ip route 0.0.0.0 0.0.0.0 Serial3/0

M3

ip route 0.0.0.0 0.0.0.0 Serial3/0

!

interface Serial3/0

ip address 150.0.0.10 255.255.255.252

You are missing the above IP address on Serial3/0 on M3 as well...

[paul driver]

@Georg Pauwen 

You dont want to default route between all three routers, you can easily cause a loop, you need to be more specific  than just adding defaults

[Georg Pauwen]

Hello,

I wanted to keep the config to a minimum; default routes in this case are sufficient, since all the connected routes are more specific; I needed just one specific route (as posted). 

[paul driver]

Hello

@Georg Pauwen

---

@Georg Pauwen wrote:

default routes in this case are sufficient, since all the connected routes are more specific; I needed just one specific route (as posted). 

---

I believe that isn't the case, For example if a host from M3 tried to access a subnet via its default route then it will be routed to M2 and then if M2 didn't have a specific route also for the destination it will route it back towards M3 and then M3 will do the same again, hence a loop!.

Another example, host behind M1 did the same, it will be routed towards M1<->M2<->M3<->M2<-M3->M2.etc

[Georg Pauwen]

Paul.

not sure how you have configured the lab, here are my final configs (my additions are marked in bold). Hosts from all four segments, PC-PT PK 1.1 (172.16.182.194/24), PC-PT PK 2.2 (194.50.10.171/26), PC-PT PK 3.1 (205.70.8.130/29), and PC-PT PK 4.2 (205.70.8.67/29), can all mutually ping each other. I don't get any loops. Can you post your lab or configs for reference ? Curious where the difference is and how the loop occurs...

M1

Router#sh run
Building configuration...

Current configuration : 773 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
ip cef
no ipv6 cef
!
interface FastEthernet0/0
ip address 172.16.182.193 255.255.255.192
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
shutdown
!
interface Serial2/0
ip address 150.0.0.5 255.255.255.252
!
interface Serial3/0
no ip address
clock rate 2000000
shutdown
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial2/0
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end

----------

M2

Router#sh run
Building configuration...

Current configuration : 833 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
ip cef
no ipv6 cef
!
interface FastEthernet0/0
ip address 194.50.10.169 255.255.255.192
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
shutdown
!
interface Serial2/0
ip address 150.0.0.6 255.255.255.252
clock rate 9600
!
interface Serial3/0
ip address 150.0.0.9 255.255.255.252
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
ip classless
ip route 172.16.182.192 255.255.255.192 Serial2/0
ip route 0.0.0.0 0.0.0.0 Serial3/0
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end

----------

M3

Router#sh run
Building configuration...

Current configuration : 804 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
ip cef
no ipv6 cef
!
interface FastEthernet0/0
ip address 205.70.8.129 255.255.255.248
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 205.70.8.65 255.255.255.248
duplex auto
speed auto
!
interface Serial2/0
no ip address
clock rate 2000000
shutdown
!
interface Serial3/0
ip address 150.0.0.10 255.255.255.252
clock rate 9600
!
interface FastEthernet4/0
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial3/0
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
end

[paul driver]

Hello

Try the following:

M1
ip route 150.0.0.9 255.255.255.252 Serial2/0 150.0.0.6
ip route 205.70.8.128 255.255.255.248 Serial2/0 150.0.0.6
ip route 205.70.8.64 255.255.255.248 Serial2/0 150.0.0.6
ip route  194.50.10.168 255.255.255.192 Serial2/0 150.0.0.6

M2
ip route 172.16.182.192 255.255.255.192 Serial2/0 150.0.0.5
ip route 205.70.8.128 255.255.255.248 Serial3/0 150.0.0.10
ip route 205.70.8.64 255.255.255.248 Serial3/0 150.0.0.10

M3
ip route 150.0.0.4 255.255.255.252 Serial3/0 150.0.0.9
ip route 172.16.182.192 255.255.255.192 Serial3/0 150.0.0.9
ip route 194.50.10.168 255.255.255.192 Serial3/0 150.0.0.9

interface Serial3/0
ip address 150.0.0.10 255.255.255.252