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PC can ping router but cannot ping a different network (Packet Tracer)

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foolinartemis
Level 1
Level 1

‎09-20-2024 07:16 AM

Hello,

I am doing a lab for class that's due at midnight tonight and I've been having trouble for the past couple of days. The assignment is to essentially create a topology with 4 different networks connected with 3 different routers. 3 of the networks have a switch, 5 PCs, and a server. I have been able to set it up to where my PCs can ping their own router, but they cannot ping another router or PC on another network. However, my routers can ping each other (at least on their connected interfaces). I tried to set up static ip routes, but I'm unsure if I did it correctly or not. I was given a network of 192.168.20.0/24 that I had to VLSM, and this is my topology table:

Device

Interface

IP Address

Subnet Mask

Default Gateway

R1

G0/0

192.168.20.1

255.255.255.192

 

R1

S0/0/0 (DCE)

192.168.20.145

255.255.255.252

 

R2

S0/0/0

192.168.20.146

255.255.255.252

 

R2

G0/0

192.168.20.65

255.255.255.224

 

R2

S0/0/1 (DCE)

192.168.20.149

255.255.255.252

 

R3

S0/0/1

192.168.20.150

255.255.255.252

 

R3

G0/0

192.168.20.97

255.255.255.224

 

R3

G0/1

192.168.20.129

255.255.255.240 

 

S1 (58-hosts)

 

192.168.20.2

255.255.255.192

192.168.20.1 

S1-PC1

Fa0/1

192.168.20.3

255.255.255.192

192.168.20.1

S1-PC2

Fa0/2

192.168.20.4

255.255.255.192

192.168.20.1

S1-PC3

Fa0/3

192.168.20.5

255.255.255.192

192.168.20.1

S1-PC4

Fa0/4

192.168.20.6

255.255.255.192

192.168.20.1

S1-PC5

Fa0/5

192.168.20.7

255.255.255.192

192.168.20.1

S2 (29-hosts)

 

192.168.20.66

255.255.255.224

192.168.20.65 

S2-PC1

Fa0/1

192.168.20.67

255.255.255.224

192.168.20.65

S2-PC2

Fa0/2

192.168.20.68

255.255.255.224

192.168.20.65

S2-PC3

Fa0/3

192.168.20.69

255.255.255.224

192.168.20.65

S2-PC4

Fa0/4

192.168.20.70

255.255.255.224

192.168.20.65

S2-PC5

Fa0/5

192.168.20.71

255.255.255.224

192.168.20.65

S3 (15-hosts)

 

192.168.20.98

255.255.255.224 

192.168.20.97 

S3-PC1

Fa0/1

192.168.20.99

255.255.255.224

192.168.20.97

S3-PC2

Fa0/2

192.168.20.100

255.255.255.224

192.168.20.97

S3-PC3

Fa0/3

192.168.20.101

255.255.255.224

192.168.20.97

S3-PC4

Fa0/4

192.168.20.102

255.255.255.224

192.168.20.97

S3-PC5

Fa0/5

192.168.20.103

255.255.255.224

192.168.20.97

S3a (7-hosts)

 

192.168.20.130

255.255.255.240 

192.168.20.129

Ubuntu Server (S1)

Fa0/20

192.168.20.8

255.255.255.192

192.168.20.1

Windows OS (S2)

Fa0/20

192.168.20.72

255.255.255.224

192.168.20.65

Kali-Linux (S3)

Fa0/20

192.168.20.104

255.255.255.224 

192.168.20.97

I have primarily just been trying to get a PC on the R1 network to ping a PC on a R2 network, so I'm going to give the show commands for those two networks.

Here is sh run for Router1 (R1):

 

Router#sh run
Building configuration...

Current configuration : 839 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524O0HM-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address 192.168.20.1 255.255.255.192
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 ip address 192.168.20.145 255.255.255.252
 clock rate 2000000
!
interface Serial0/0/1
 no ip address
 clock rate 2000000
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
ip classless
ip route 192.168.20.148 255.255.255.252 192.168.20.146 
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end

 

Show ip route for Router1 (R1):

 

Router#sh ip rout
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

     192.168.20.0/24 is variably subnetted, 5 subnets, 3 masks
C       192.168.20.0/26 is directly connected, GigabitEthernet0/0
L       192.168.20.1/32 is directly connected, GigabitEthernet0/0
C       192.168.20.144/30 is directly connected, Serial0/0/0
L       192.168.20.145/32 is directly connected, Serial0/0/0
S       192.168.20.148/30 [1/0] via 192.168.20.146

 

Show run for Router2 (R2):

 

Router#sh run
Building configuration...

Current configuration : 836 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524K237-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
 ip address 192.168.20.65 255.255.255.224
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Serial0/0/0
 ip address 192.168.20.146 255.255.255.252
!
interface Serial0/0/1
 ip address 192.168.20.149 255.255.255.252
 clock rate 2000000
!
interface Vlan1
 no ip address
 shutdown
!
ip classless
ip route 192.168.20.0 255.255.255.252 192.168.20.145 
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end

 

 Show ip route for Router2 (R2):

 

Router#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is not set

     192.168.20.0/24 is variably subnetted, 7 subnets, 3 masks
S       192.168.20.0/30 [1/0] via 192.168.20.145
C       192.168.20.64/27 is directly connected, GigabitEthernet0/0
L       192.168.20.65/32 is directly connected, GigabitEthernet0/0
C       192.168.20.144/30 is directly connected, Serial0/0/0
L       192.168.20.146/32 is directly connected, Serial0/0/0
C       192.168.20.148/30 is directly connected, Serial0/0/1
L       192.168.20.149/32 is directly connected, Serial0/0/1

 

Show run for Switch1 (S1):

 

Switch#sh run
Building configuration...

Current configuration : 1140 bytes
!
version 15.0
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Switch
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface Vlan1
 ip address 192.168.20.2 255.255.255.192
 shutdown
!
ip default-gateway 192.168.20.1
!
!
!
!
line con 0
!
line vty 0 4
 login
line vty 5 15
 login
!
!
!
!
end

 

Show run for Switch2 (S2):

 

Switch#sh run
Building configuration...

Current configuration : 1142 bytes
!
version 15.0
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Switch
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface Vlan1
 ip address 192.168.20.66 255.255.255.224
 shutdown
!
ip default-gateway 192.168.20.65
!
!
!
!
line con 0
!
line vty 0 4
 login
line vty 5 15
 login
!
!
!
!
end

 

I have also attached the Packet Tracer file. Ignore the little network that is at the bottom of the topology that isn't connected to anything, that was just me trying to troubleshoot on a smaller scale. Please let me know if I need to show anymore show commands. Thank you so much, I appreciate any help!

Labels:
netfor lab 1 ver 4.pkt.zip
0 Helpful
1 Accepted Solution

Accepted Solutions

Go to solution
David Ruess
VIP
VIP

‎09-20-2024 08:21 AM

Hello,

You need to configure a static route for every network that's not connected to that router. 

I would recommend just implementing a routing protocol to make your life easier unless the assignment is specific to you creating static routes only.

 

router eigrp 1

network 0.0.0.0 255.255.255.255

Hope this helps.

-David

View solution in original post

3 Replies 3

Go to solution
David Ruess
VIP
VIP

‎09-20-2024 08:21 AM

Hello,

You need to configure a static route for every network that's not connected to that router. 

I would recommend just implementing a routing protocol to make your life easier unless the assignment is specific to you creating static routes only.

 

router eigrp 1

network 0.0.0.0 255.255.255.255

Hope this helps.

-David

Go to solution
foolinartemis
Level 1
Level 1
In response to David Ruess

‎09-20-2024 08:26 AM

Hey David,

That worked, thank you so much! If you don't mind me asking, how exactly does this routing protocol work? Like what does "router eigrp 1" do?

Thank you again!

0 Helpful

Go to solution
David Ruess
VIP
VIP

‎09-20-2024 08:59 AM

Routing protocols exchange routes. Simple as that. Now the mechanism in which they exchange routes is a bit more involved and complicated but essentially it does what static routes do on a more dynamic scale. For instance:

Your static route has a statement that says this network is out this interface (or next hop IP). A routing protocol will send information about it known routes to its neighbors and they exchange routing information. I just picked EIGRP but you could have used OSPF or RIP for Packet Tracer. Everyone has their likes/dislikes of the routing protocols, and each have their pros/cons in certain network designs. 

 

router eigrp 1 <- turns on the EIGRP process and assigns it to Autonomous System 1 - this can be any # but they must match between router peers to form a neighbor adjacency.

network 0.0.0.0 255.255.255.255 <- this command enables EIGRP packets to be sent out interfaces in this range and it also advertises its interface networks to its neighbors. 

Specifically 0.0.0.0 255.255.255.255 means all networks/interfaces. 

 

There are way better resources on routing protocols than what I can explain here. You can try some CCNA level YouTube videos to help you better understand routing protocols. These are very involved protocols that require several chapters (and even whole books) written about them

 

 

-David

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